Copper-chromium-nickel-silicon alloy ingot casting optimization method and system based on multi-parameter co-melting

Abstract

The invention relates to the technical field of copper alloys, in particular to a copper-chromium-nickel-silicon alloy ingot optimization method and system based on multi-parameter co-melting, and the method comprises the steps: obtaining a matching raw material from a pre-constructed raw material set according to a pre-constructed copper-chromium-nickel-silicon alloy component sequence; smelting the raw materials in the proportioned raw materials according to a pre-configured smelting temperature and a pre-constructed composite covering agent to obtain a melt alloy; the melt alloy is refined, and a refined melt alloy is obtained; and carrying out semi-continuous casting on the refined melt alloy by using a pre-constructed casting machine to obtain a copper-chromium-nickel-silicon alloy cast ingot. According to the invention, the mechanical property and conductivity of the alloy can be improved on the basis of ensuring the thermal stability and melt flowability of the alloy.

Description

Technical Field

[0001] The present invention relates to the technical field of copper alloys, and particularly to an optimization method and system for copper-chromium-nickel-silicon alloy ingots based on multi-parameter co-melting. Background Art

[0002] Copper-chromium-nickel-silicon alloy has high thermal conductivity, high electrical conductivity and excellent corrosion resistance. However, during the melting and casting process, the alloy faces problems such as gas absorption caused by high melting temperature, poor melt fluidity, easy segregation of components, and hot cracking tendency. The combined action of these factors makes the alloy prone to cracking during casting and hot rolling, seriously damaging its performance.

[0003] In view of this, it is necessary to find a new casting method to solve this technical problem. Summary of the Invention

[0004] The present invention provides an optimization method for copper-chromium-nickel-silicon alloy ingots based on multi-parameter co-melting, and its main purpose is to improve the mechanical properties and electrical conductivity of the alloy on the basis of ensuring the thermal stability and melt fluidity of the alloy.

[0005] To achieve the above object, an optimization method for copper-chromium-nickel-silicon alloy ingots based on multi-parameter co-melting provided by the present invention includes:

[0006] Obtain proportioned raw materials from a pre-constructed raw material set according to a pre-constructed copper-chromium-nickel-silicon alloy composition sequence;

[0007] Melt each raw material in the proportioned raw materials according to a pre-configured melting temperature and a pre-constructed composite covering agent to obtain a molten alloy;

[0008] Refine the molten alloy to obtain a refined molten alloy;

[0009] Use a pre-constructed casting machine to semi-continuously cast the refined molten alloy to obtain a copper-chromium-nickel-silicon alloy ingot.

[0010] Optionally, the obtaining proportioned raw materials from a pre-constructed raw material set according to a pre-constructed copper-chromium-nickel-silicon alloy composition sequence includes:

[0011] Obtain the copper-chromium-nickel-silicon alloy composition sequence, wherein the copper-chromium-nickel-silicon alloy composition sequence includes, by mass percentage, 0.2-0.5% of chromium, 2-3% of nickel, 0.5-0.8% of silicon, 0.05-0.15% of manganese, 0.01-0.1% of magnesium, 0.05-0.15% of zinc, 0.01-0.1% of yttrium, and the balance is copper and other unavoidable impurities;

[0012] Obtain the raw material set, where the raw material set includes electrolytic copper, zinc ingots, and 10% Cu-Cr master alloy, 20% Cu-Ni master alloy, 60% Ni-Si master alloy, 30% Cu-Mn master alloy, 10% Cu-Mg master alloy, and 20% Cu-Y master alloy according to the component mass ratio;

[0013] Perform element source allocation on the raw material set based on each element in the copper-chromium-nickel-silicon alloy component sequence to obtain an element source sequence;

[0014] According to the element source sequence and the copper-chromium-nickel-silicon alloy component sequence, calculate the master alloy usage of each element to obtain a master alloy usage sequence, and calculate the sum of the master alloy usages in the master alloy usage sequence to obtain the total alloy usage;

[0015] Obtain the copper usage according to the total alloy usage;

[0016] Weigh the raw material set according to the master alloy usage sequence and the copper usage to obtain the proportioned raw materials.

[0017] Optionally, the calculating the master alloy usage of each element according to the element source sequence and the copper-chromium-nickel-silicon alloy component sequence to obtain a master alloy usage sequence includes:

[0018] Judge whether each element source in the element source sequence is a preset single alloy source to obtain an element source judgment result;

[0019] According to the element source judgment result, perform calculation on the elements with the element source being the single alloy source based on the pre-constructed master alloy usage calculation to obtain the single-source alloy usage, where the expression of the master alloy usage calculation is expressed as:

[0020]

[0021] In the formula, G(·) represents the expression of the master alloy usage calculation, Cu-Cr usage represents the 10% Cu-Cr master alloy, A represents the proportion of the element in the copper-chromium-nickel-silicon alloy component sequence. When the master alloy is the 10% Cu-Cr master alloy, A represents the proportion of the Cr element, B represents the alloy ratio of the master alloy. When the master alloy is the 10% Cu-Cr master alloy, B represents 10%;

[0022] According to the element source judgment result, classify the element sources that are not the single alloy source to obtain a pure source and a mixed source, use the elements contained in both the pure source and the mixed source as target elements, use the elements other than the target elements in the mixed source as combined elements, and obtain the element ratio between the target elements and the combined elements in the mixed source;

[0023] Based on the expression for calculating the amount of the master alloy, calculate the amount of the alloy of the combined elements based on the mixed source to obtain the amount of the alloy of the mixed source, and perform weighted calculation on the amount of the alloy of the mixed source and the element ratio to obtain the first component of the target element;

[0024] Obtain the alloy composition of the target element from the copper-chromium-nickel-silicon alloy composition sequence to get the target alloy composition, and calculate the difference between the target alloy composition and the first component of the target element to obtain the second component of the target element;

[0025] According to the expression for calculating the amount of the master alloy and the second component of the target element, obtain the amount of the alloy of the pure source to get the amount of the alloy of the pure source;

[0026] Summarize the amount of the alloy of the mixed source, the amount of the alloy of the pure source and the amount of the alloy of the single source to obtain the master alloy amount sequence.

[0027] Optionally, melting each raw material in the proportioned raw materials according to the pre-configured melting temperature and the pre-constructed composite covering agent to obtain a molten alloy, including:

[0028] Obtain the predicted nucleation temperature of the copper-chromium-nickel-silicon alloy composition sequence, and increase a preset first threshold according to the predicted nucleation temperature to obtain the melting temperature, wherein the predicted nucleation temperature is configured to be 1140-1160 °C, and the melting temperature is 1240-1260 °C

[0029] Obtain a composite covering agent, wherein the composite covering agent includes an L-70H type covering agent and calcined charcoal powder, wherein the thickness of the L-70H type covering agent ≥ 32 mm, and the thickness of the calcined charcoal powder covering agent ≥ 20 mm;

[0030] Use the L-70H type covering agent to cover the proportioned raw materials to obtain a primary covering;

[0031] Use the calcined charcoal powder covering agent to cover the primary covering to obtain an object to be calcined;

[0032] Melt the object to be calcined according to the melting temperature to obtain a molten alloy.

[0033] Optionally, refining the molten alloy to obtain a refined molten alloy, including:

[0034] Add a slag removing agent to the molten alloy and perform a first stirring operation to obtain a slag-removed melt, wherein the operation duration of the first stirring is 1-3 min;

[0035] Let the slag-removed melt stand, and screen out the oxidized slag precipitated on the surface of the slag-removed melt to obtain a qualified melt. Among them, the standing operation duration is 5 - 10 min;

[0036] Use the pre-built argon to perform a degassing operation on the qualified melt to obtain a degassed melt. Among them, the degassing operation duration is 25 - 30 min;

[0037] Use the pre-built ash rake to press the pre-built deoxidizer into the degassed melt to melt it and obtain a deoxidized melt;

[0038] According to the preset supplement amount, supplement and add the composite covering agent to the deoxidized melt, and use the pre-built rare earth yttrium to perform a purification operation on the deoxidized melt supplemented with the composite covering agent to obtain a purified melt;

[0039] Perform slag skimming on the purified melt to obtain a refined melt alloy.

[0040] Optionally, the step of using the pre-built rare earth yttrium to perform a purification operation on the deoxidized melt supplemented with the composite covering agent to obtain a purified melt includes:

[0041] Use the pre-built 0.1 mm thick copper foil to wrap the rare earth yttrium to obtain wrapped yttrium;

[0042] Use the ash rake to press the wrapped yttrium to a preset depth in the deoxidized melt to obtain a yttrium-added melt;

[0043] Perform a second stirring operation on the yttrium-added melt to obtain a purified melt. Among them, the second stirring operation duration is 1 - 3 min.

[0044] Optionally, the step of using the pre-built casting machine to perform semi-continuous casting on the refined melt alloy to obtain a copper-chromium-nickel-silicon alloy ingot includes:

[0045] Pour the refined melt alloy into the pre-built mold. Among them, the mold is covered with the composite covering agent;

[0046] Use the mold to perform the first cooling on the refined melt alloy in the mold;

[0047] During the first cooling process, when the billet shell solidified from the refined melt alloy is greater than the preset stretchable thickness threshold, use the pre-built traction equipment to extract the refined melt alloy to obtain a semi-solidified alloy;

[0048] Use the pre-built deionized water to perform a second cooling on the semi-solidified alloy to obtain a copper-chromium-nickel-silicon alloy ingot.

[0049] Optionally, pouring the refined molten alloy into a pre-constructed mold includes:

[0050] Obtaining a converter containing combusted natural gas, and using the converter to transfer the refined molten alloy into a pre-constructed chute, where the chute is covered with a mixture of slag removal agent and graphite powder that has been baked and dried;

[0051] Filtering the refined molten alloy using a pre-constructed ceramic filter in the chute to obtain a particle-free molten alloy;

[0052] Injecting the particle-free molten alloy into the mold using a pre-constructed pouring tube in the chute, where the pouring tube is at a depth of 3.5 - 4.5 cm below the liquid level in the mold.

[0053] Optionally, after injecting the particle-free molten alloy into the mold, the method further includes:

[0054] During the process of injecting the particle-free molten alloy into the mold, obtaining the volume ratio of the particle-free molten alloy in the mold;

[0055] When the volume ratio is greater than or equal to a preset full threshold, starting the casting machine and a pre-constructed vibrating trolley, where the vibrating frequency of the vibrating trolley is 50 - 60 rpm / min and the vibration amplitude is 3 - 5 mm.

[0056] To achieve the above object, the present invention also provides an optimization system for copper-chromium-nickel-silicon alloy ingots based on multi-parameter co-fusion, including:

[0057] A feeding module for obtaining proportioned raw materials from a pre-constructed raw material set according to a pre-constructed copper-chromium-nickel-silicon alloy composition sequence;

[0058] A melting module for melting each raw material in the proportioned raw materials according to a pre-configured melting temperature and a pre-constructed composite covering agent to obtain a molten alloy;

[0059] A refining module for refining the molten alloy to obtain a refined molten alloy;

[0060] A casting module for semi-continuously casting the refined molten alloy using a pre-constructed casting machine to obtain a copper-chromium-nickel-silicon alloy ingot.

[0061] To solve the above problems, the present invention also provides an electronic device, which includes:

[0062] A memory storing at least one instruction;

[0063] A processor that executes the instructions stored in the memory to implement the above-mentioned optimization method for copper-chromium-nickel-silicon alloy ingots based on multi-parameter co-fusion.

[0064] To solve the above problems, the present invention also provides a computer-readable storage medium storing at least one instruction, which is executed by a processor in an electronic device to implement the above-mentioned optimization method for copper-chromium-nickel-silicon alloy ingots based on multi-parameter co-fusion.

[0065] To solve the problems described in the background art, the present invention first obtains the proportioned raw materials. Among them, the proportioned raw materials are first adding Cr element on the basis of copper-nickel-silicon alloy, which can improve the mechanical properties of the alloy and obtain high electrical conductivity. However, since Cr is extremely easy to be oxidized and burned at high temperature, Mn and Mg elements are added to reduce the oxygen content in the alloy melt. Then the present invention performs the melting operation. During the melting process, this solution uses deoxidizer and slag remover to reduce melt slag inclusion. Combining the slag removal effect of rare earth elements, casting is completed under the composite covering agent and argon protection to achieve the clean preparation of alloy ingots and improve the thermal stability of the alloy, which is beneficial to the subsequent hot rolling process. In addition, due to the addition of high melting point elements such as Ni and Cr and active elements such as Mg in the alloy elements, the melt has high temperature gas absorption, viscosity and poor fluidity during the melting and casting process, resulting in defects such as porosity, skinning and shrinkage porosity in the ingot. Therefore, the main alloy elements are added in the form of master alloy, and Zn element is added at the same time to improve the fluidity of the alloy melt, reduce composition segregation and shrinkage cavity and other defects, making the proportioned raw materials more suitable for the ingot process. Further using the optimized casting parameters to realize the refining and casting process, a more suitable alloy ingot is obtained. Therefore, the present invention can improve the mechanical properties and electrical conductivity of the alloy on the basis of ensuring the thermal stability and melt fluidity of the alloy. Description of the Drawings

[0066] Figure 1 It is a schematic flow chart of the optimization method for copper-chromium-nickel-silicon alloy ingots based on multi-parameter co-fusion provided by an embodiment of the present invention;

[0067] Figure 2 It is a functional module diagram of the optimization system for copper-chromium-nickel-silicon alloy ingots based on multi-parameter co-fusion provided by an embodiment of the present invention;

[0068] Figure 3 It is a schematic structural diagram of an electronic device for implementing the optimization method for copper-chromium-nickel-silicon alloy ingots based on multi-parameter co-fusion provided by an embodiment of the present invention.

[0069] Description of the Reference Numerals:

[0070] 1. Electronic device; 10. Processor; 11. Memory; 12. Bus.

[0071] The implementation, functional features, and advantages of the present invention will be further described with reference to the embodiments and the accompanying drawings. Specific Embodiments

[0072] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0073] An embodiment of the present application provides an optimization method for copper-chromium-nickel-silicon alloy ingots based on multi-parameter co-fusion. The execution subject of the optimization method for copper-chromium-nickel-silicon alloy ingots based on multi-parameter co-fusion includes, but is not limited to, at least one of electronic devices such as a server, a terminal, etc. that can be configured to execute the method provided in this embodiment of the present application. In other words, the optimization method for copper-chromium-nickel-silicon alloy ingots based on multi-parameter co-fusion can be executed by software or hardware installed on a terminal device or a server device, and the software can be a blockchain platform. The server includes, but is not limited to: a single server, a server cluster, a cloud server, or a cloud server cluster, etc.

[0074] Refer to Figure 1 As shown, it is a flowchart of an optimization method for copper-chromium-nickel-silicon alloy ingots based on multi-parameter co-fusion provided by an embodiment of the present invention. In this embodiment, the optimization method for copper-chromium-nickel-silicon alloy ingots based on multi-parameter co-fusion includes:

[0075] S1. Obtain the proportioned raw materials from the pre-constructed raw material set according to the pre-constructed copper-chromium-nickel-silicon alloy composition sequence.

[0076] Wherein, the copper-chromium-nickel-silicon alloy composition sequence refers to an alloy composition table designed in this solution with better alloy properties.

[0077] Wherein, the raw material set is some raw material types provided by the present invention. The proportioned raw materials are the selected masses of specific raw materials.

[0078] Specifically, in the embodiment of the present invention, the obtaining of the proportioned raw materials from the pre-constructed raw material set according to the pre-constructed copper-chromium-nickel-silicon alloy composition sequence includes:

[0079] Obtain the copper-chromium-nickel-silicon alloy composition sequence, wherein the copper-chromium-nickel-silicon alloy composition sequence, calculated by mass percentage, includes 0.2 - 0.5% chromium, 2 - 3% nickel, 0.5 - 0.8% silicon, 0.05 - 0.15% manganese, 0.01 - 0.1% magnesium, 0.05 - 0.15% zinc, 0.01 - 0.1% yttrium, and the balance is copper and other unavoidable impurities;

[0080] Obtain the raw material set, where the raw material set includes electrolytic copper, zinc ingots, and 10% Cu-Cr master alloy, 20% Cu-Ni master alloy, 60% Ni-Si master alloy, 30% Cu-Mn master alloy, 10% Cu-Mg master alloy, and 20% Cu-Y master alloy according to the component mass ratio;

[0081] Perform element source allocation on the raw material set based on each element in the copper-chromium-nickel-silicon alloy composition sequence to obtain an element source sequence;

[0082] According to the element source sequence and the copper-chromium-nickel-silicon alloy composition sequence, calculate the master alloy dosage of each element to obtain a master alloy dosage sequence, and calculate the sum of the master alloy dosages in the master alloy dosage sequence to obtain the total alloy dosage;

[0083] Obtain the copper dosage according to the total alloy dosage;

[0084] Weigh the raw material set according to the master alloy dosage sequence and the copper dosage to obtain the proportioned raw materials.

[0085] Among them, the solid solubility of the solid solution formed by Cr in the copper matrix decreases rapidly with the decrease of temperature. Therefore, Cr can improve the mechanical properties of the alloy through precipitation strengthening and obtain high electrical conductivity at the same time.

[0086] Among them, Ni forms Ni2Si phase with Si, which has a strong aging strengthening effect and improves the corrosion resistance of the alloy. The higher the Ni content, the more Ni2Si precipitation phases. Therefore, for the copper-chromium-nickel-silicon alloy, the Ni content needs to be ≥2%. However, when the Ni content is too high, the Ni2Si precipitation phases will aggregate and grow, losing the aging strengthening effect, and too much Ni is easy to form Ni3Si phase with a higher nucleation temperature (1142 °C) of Si, reducing the fluidity of the melt, forming shrinkage porosity defects. At the same time, the shrinkage stress in the nickel-rich area at the end of solidification is concentrated, generating thermal cracks and increasing the thermal cracking tendency. Therefore, the ratio of Ni and Si elements needs to be limited. In the embodiment of the present invention, Ni:Si = 3 - 4.5:1 is equipped.

[0087] Especially, Cr will also form Cr3Si precipitation phase with Si. To avoid too much Ni or Si being dissolved in the matrix and affecting the alloy properties, therefore, the ratio of Cr and Ni elements also needs to be limited. In the embodiment of the present invention, Cr:Ni = 0.07 - 0.2:1 is equipped.

[0088] Among them, a small amount of Mn is added, which can reduce the oxygen content of the alloy melt, realize the clean preparation of the ingot, and improve the thermal stability of the alloy. Too much Mn is easy to form brittle phase Mn2Si phase, increasing the risk of self-cracking.

[0089] Among them, a small amount of Mg is added, which can reduce the oxygen content of the alloy melt, realize the clean preparation of the ingot, and prevent self-cracking.

[0090] Among them, Zn is dissolved in the matrix, narrowing the solidification temperature range of the alloy and improving the fluidity of the alloy melt.

[0091] Among them, the rare earth element Y has active chemical properties, can purify the melt, and can also refine the grains when entering the copper alloy, improving the surface quality of the alloy ingot.

[0092] In addition, outside the composition sequence of the copper-chromium-nickel-silicon alloy, it is also necessary to know during the alloy casting process:

[0093] Ingot specifications: The width of the ingot specification is ≥630 mm, and the thickness is ≥190 mm; the ingot has excellent quality, uniform and stable composition, and a flat and smooth surface, which is convenient for hot rolling and blooming. The grain size is ≤1 mm.

[0094] Specifically, in the embodiment of the present invention, when obtaining the alloy raw materials, the amounts and proportions of various elements in the selected raw materials should meet the above requirements.

[0095] Specifically, in the embodiment of the present invention, due to the addition of high melting point elements such as Ni and Cr and active elements such as Mg in the alloy elements, the melt shows high temperature gas absorption, viscosity and poor fluidity during the melting and casting process, resulting in defects such as porosity, skinning, and shrinkage porosity in the ingot.

[0096] Therefore, the alloy elements of the present invention do not adopt a metal material all of which is a single substance, but are mainly added in the form of master alloys (such as 10% Cu-Cr master alloy, 20% Cu-Ni master alloy, 60% Ni-Si master alloy, 30% Cu-Mn master alloy, 10% Cu-Mg master alloy, and 20% Cu-Y master alloy). At the same time, Zn element is added to improve the fluidity of the alloy melt and reduce defects such as composition segregation and shrinkage cavity. Among them, the 10% Cu-Cr master alloy means that Cr accounts for 10% by mass in the Cu-Cr master alloy.

[0097] Among them, the element source distribution refers to checking which raw material each element comes from. For example, the Cr element comes from the 10% Cu-Cr master alloy, while the Ni element comes from the 20% Cu-Ni master alloy and the 60% Ni-Si master alloy. The element source sequence refers to the record of the raw material sources of each element.

[0098] Specifically, in the embodiment of the present invention, according to the element source sequence and the copper-chromium-nickel-silicon alloy composition sequence, the master alloy dosage of each element is calculated. For example:

[0099] The content of Cr element in the copper-chromium-nickel-silicon alloy composition sequence is 0.35%, and the corresponding alloy of Cr element is 10% Cu-Cr master alloy:

[0100]

[0101] It shows that the taking amount of 10% Cu-Cr master alloy is 3.5%.

[0102] Among them, the total amount of the alloy is the sum of the taking amounts of each master alloy, and the remaining amount of the proportioning raw materials is copper, so as to obtain the copper usage.

[0103] Specifically, in the embodiment of the present invention, by giving the copper-chromium-nickel-silicon alloy composition sequence and the raw material set, a certain mass of each raw material can be weighed to obtain the proportioning raw materials. Among them, the proportioning raw materials include the names and masses of each raw material.

[0104] In detail, in the embodiment of the present invention, calculating the master alloy usage of each element according to the element source sequence and the copper-chromium-nickel-silicon alloy composition sequence to obtain the master alloy usage sequence includes:

[0105] Judging whether each element source in the element source sequence is a preset single alloy source to obtain an element source judgment result;

[0106] According to the element source judgment result, calculating the elements with the element source being the single alloy source based on a pre-constructed master alloy usage calculation to obtain the single-source alloy usage, where the expression of the master alloy usage calculation is expressed as:

[0107]

[0108] In the formula, G(·) represents the expression of the master alloy usage calculation, Cu-Cr usage represents 10% Cu-Cr master alloy, A represents the proportion of the element in the copper-chromium-nickel-silicon alloy composition sequence. When the master alloy is 10% Cu-Cr master alloy, A represents the proportion of Cr element, B represents the alloy ratio of the master alloy. When the master alloy is 10% Cu-Cr master alloy, B represents 10%;

[0109] According to the element source judgment result, classifying the element sources that are not the single alloy source to obtain a pure source and a mixed source, taking the elements contained in both the pure source and the mixed source as target elements, taking the elements other than the target elements in the mixed source as combined elements, and obtaining the element ratio between the target elements and the combined elements in the mixed source;

[0110] Based on the expression for calculating the amount of the master alloy, calculate the amount of the alloy of the combined elements based on the mixed source to obtain the amount of the alloy of the mixed source, and perform weighted calculation on the amount of the alloy of the mixed source and the element ratio to obtain the first component of the target element;

[0111] Obtain the alloy composition of the target element from the copper-chromium-nickel-silicon alloy composition sequence to get the target alloy composition, and calculate the difference between the target alloy composition and the first component of the target element to obtain the second component of the target element;

[0112] Based on the expression for calculating the amount of the master alloy and the second component of the target element, obtain the amount of the alloy of the pure source to get the amount of the alloy of the pure source;

[0113] Summarize the amount of the alloy of the mixed source, the amount of the alloy of the pure source, and the amount of the alloy of the single source to obtain the master alloy amount sequence.

[0114] Among them, the single alloy source is a condition configured in the present invention for judging whether an element has multiple sources. For example, if the Cr element only comes from the 10% Cu-Cr master alloy, then the Cr element is a single alloy source. The Ni element comes from the 20% Cu-Ni master alloy and the 60% Ni-Si master alloy, having two alloy sources, so the Ni element does not belong to the single alloy source. The element source judgment result includes records of whether each element is a single alloy source.

[0115] Among them, the calculation of the amount of the master alloy is a simple proportional formula, and the mass of the raw material is inferred based on the required amount of the element composition and the content in the raw material.

[0116] Among them, the pure source refers to an alloy such as the 20% Cu-Ni master alloy, which has only one element other than copper. And the mixed source refers to an alloy such as the 60% Ni-Si master alloy, whose composition may be [30% Ni, 60% Si, 10% Cu] or [40% Ni, 60% Si], having two elements other than copper.

[0117] Among them, the target element refers to an element existing in multiple alloys, such as the Ni element. The combined element refers to an element other than copper and the target element, such as the Si element in the Ni-Si master alloy.

[0118] Among them, the element ratio is that the ratio of Ni-Si is 3:6.

[0119] Among them, the amount of the alloy of the mixed source refers to the mass required for the alloy of the mixed source. The first component of the target element refers to the component amount of the target element contained in the amount of the alloy of the mixed source.

[0120] Among them, the dosage of the alloy from a pure source refers to the mass of the alloy required from a pure source.

[0121] Specifically, in the embodiment of the present invention, it is assumed that the Ni-Si master alloy contains 60% Si, 30% Ni, and 10% Cu. Si needs to provide 0.65% Si through the Ni-Si master alloy:

[0122]

[0123] The dosage of Ni-Si is obtained as 1.0833%, and then the contribution of Ni therein is the first component of the target element [1.0833% × 30% ≈ 0.325%]. Furthermore, through the difference between the target alloy composition and the first component of the target element, the second component of the target element is obtained [2.5% - 0.325% = 2.175%].

[0124] Again, the dosage of the 20% Cu-Ni master alloy with a mixed source is calculated using the master alloy dosage:

[0125]

[0126] The dosage of the alloy from a pure source of the 20% Cu-Ni master alloy is obtained as 10.875%.

[0127] Through the above steps, the present invention calculates and summarizes the dosages of the master alloys with mixed sources, pure sources, or single sources of each element, and the master alloy dosage sequence can be obtained.

[0128] S2. According to the pre-configured melting temperature and the pre-constructed composite covering agent, each raw material in the proportioned raw materials is melted to obtain a molten alloy.

[0129] Among them, the melting temperature refers to the temperature at which the alloy changes from a solid state to a liquid state.

[0130] Among them, the composite covering agent is a special material that covers the surface of the melt, and its core function is multiple protection and optimization of the solidification process.

[0131] Among them, melting refers to the process of melting the alloy from a solid state to a liquid state. The molten alloy refers to the alloy in a liquid state.

[0132] Specifically, in the embodiment of the present invention, the step of melting each raw material in the proportioned raw materials according to the pre-configured melting temperature and the pre-constructed composite covering agent to obtain a molten alloy includes:

[0133] Obtain the predicted nucleation temperature of the copper-chromium-nickel-silicon alloy composition sequence, and increase a preset first threshold according to the predicted nucleation temperature to obtain the melting temperature, where the predicted nucleation temperature is configured to be 1140 - 1160 °C, and the melting temperature is 1240 - 1260 °C

[0134] Obtain a composite covering agent, wherein the composite covering agent includes an L-70H type covering agent and calcined charcoal powder. Among them, the thickness of the L-70H type covering agent is ≥32 mm, and the thickness of the calcined charcoal powder covering agent is ≥20 mm;

[0135] Use the L-70H type covering agent to cover the proportioned raw materials to obtain a primary covering;

[0136] Use the calcined charcoal powder covering agent to cover the primary covering to obtain an object to be calcined;

[0137] Melt the object to be calcined according to the melting temperature to obtain a molten alloy.

[0138] Among them, the L-70H type covering agent contains components such as borax and fluoride salts, which can reduce the melting point of the slag, adsorb oxides (such as CuO, SnO2) and non-metallic inclusions, can form a liquid covering layer, reduce the contact between the melt and air, and prevent oxidation and burning loss (especially easily oxidized elements such as Sn, Zn).

[0139] Among them, the calcined charcoal powder covering agent can generate CO gas at high temperature, create a weakly reducing atmosphere, inhibit metal oxidation, and the porous structure adsorbs the scum and fine particles on the surface of the melt.

[0140] Among them, the covering refers to the process of completely shielding the raw materials. The primary covering refers to a composition of only the proportioned raw materials and the L-70H type covering agent. The object to be calcined is a composition of the calcined charcoal powder covering agent, the L-70H type covering agent, and the proportioned raw materials from top to bottom.

[0141] Specifically, in the embodiment of the present invention, through theoretical calculation, the nucleation temperature of the alloy under the composition sequence of the copper-chromium-nickel-silicon alloy is measured to be 1140-1160 °C. A casting temperature close to the nucleation temperature will cause poor melt fluidity, resulting in unevenness of the ingot composition and structure and cold lap defects; too high a casting temperature will cause serious melt gas absorption, easily generating defects such as pores and cracks. Therefore, the melting temperature of the present invention is configured to be 1240-1260 °C.

[0142] Specifically, in the embodiment of the present invention, configuring the thickness of the L-70H type covering agent to be ≥32 mm can ensure that the covering agent is completely liquefied to form a primary covering with a continuous liquid layer, and the sufficient thickness prevents the melt from being locally exposed to air.

[0143] And the thickness of the calcined charcoal powder covering agent ≥20 mm can maintain the continuity of CO gas release, form an object to be calcined, provide a redundant adsorption layer, and prevent the scum from floating up and penetrating.

[0144] Specifically, in the embodiments of the present invention, adding the L-70H type covering agent first can preferentially melt into a liquid covering layer at high temperature and quickly adsorb the initial oxidation slag, providing a stable foundation for the subsequent covering with charcoal powder and preventing the direct contact between the charcoal powder and the high-temperature melt for combustion. Then adding the calcined charcoal powder covering agent makes the charcoal powder located on the upper layer, continuously releasing CO gas and enhancing the reducing atmosphere. And the combination synergistically enables the liquid L-70H to adsorb large particle slag and the charcoal powder to adsorb fine impurities.

[0145] Specifically, in the embodiments of the present invention, the melting process is achieved at a high temperature of 1240 - 1260 °C to obtain a melt alloy. Among them, the melt alloy refers to the alloy material in a molten state.

[0146] S3. Refine the melt alloy to obtain a refined melt alloy.

[0147] Among them, the refining refers to the process of removing some impurities from the alloy. The refined melt alloy refers to the melt alloy after some oxide impurities are removed.

[0148] Specifically, in the embodiments of the present invention, the refining of the melt alloy to obtain a refined melt alloy includes:

[0149] Adding a slag remover to the melt alloy and performing a first stirring operation to obtain a slag-removed melt, where the operation duration of the first stirring is 1 - 3 min;

[0150] Let the slag-removed melt stand and screen out the oxidation slag precipitated on the surface of the slag-removed melt to obtain a qualified melt, where the operation duration of the standing is 5 - 10 min;

[0151] Using pre-constructed argon to perform a degassing operation on the qualified melt to obtain a degassed melt, where the operation duration of the degassing operation is 25 - 30 min;

[0152] Using a pre-constructed ash rake to press a pre-constructed deoxidizer into the degassed melt to melt and obtain a deoxidized melt;

[0153] According to a preset supplementary amount, supplement and add the composite covering agent to the deoxidized melt, and use a pre-constructed rare earth yttrium to perform a purification operation on the deoxidized melt supplemented with the composite covering agent to obtain a purified melt;

[0154] Perform slag skimming on the purified melt to obtain a refined melt alloy.

[0155] Among them, the slag remover is a chemical or mineral mixture used to remove molten slag during the metal melting process. In the present invention, borax is used as the slag remover.

[0156] Among them, the first stirring operation is the process of evenly distributing the molten alloy with a stirrer, which is the same as the subsequent second stirring process. The first and second are used to distinguish the two stirring actions. Among them, the slag-removed melt refers to the melt with slag particles precipitated on the surface.

[0157] Among them, the static placement means placing without movement to keep the liquid in a non-flowing state.

[0158] Among them, the sieving operation refers to the operation of filtering through a sieve. The qualified melt refers to the melt after removing the slag particles of the oxidized slag.

[0159] Among them, argon is an inert noble gas, well-known for its stability and safety, and is widely used in fields such as welding and metallurgy.

[0160] Among them, the degassing is a process of injecting an inert gas (such as argon) into molten metal (such as copper liquid) to remove dissolved hydrogen and other impurities (such as oxides). Its core goal is to improve the material purity and reduce defects such as pores and cracks. The degassed melt refers to the molten alloy injected with argon.

[0161] Among them, the ash rake is a tool for cleaning the stove hearth in the countryside, similar to shovels, rakes, hooks, etc., which can send substances into the melt without being melted itself. The deoxidized melt refers to the molten alloy in which oxides slowly precipitate.

[0162] Among them, the supplementary amount is related to the time monitoring process. The more oxide impurities there are, the more composite covering agent needs to be supplemented to achieve the absorption of oxides.

[0163] Among them, rare earth yttrium is a silver-white rare earth metal that can improve the grain size of metals such as chromium and molybdenum, and enhance strength and high-temperature resistance.

[0164] Among them, the purification operation refers to the operation of purifying the melt by using the active property of Y. Entering the copper alloy can also refine the grains and improve the surface quality of the alloy ingot. The purified melt refers to the molten alloy after adding Y.

[0165] Among them, the slag skimming operation is the same as the above-mentioned sieving operation.

[0166] Specifically, after the alloy raw materials are melted in the embodiments of the present invention, a slag-removing agent is added, and the melt is stirred to make the composition uniform, with the stirring duration being 1 - 3 min; the melt is statically placed for 5 - 10 min, and the oxidized slag on the surface is completely skimmed off; after the composition of the melt in the furnace is qualified, argon is introduced for degassing, and the degassing time is 25 - 30 min; then a deoxidizer is added, and the deoxidizer is pressed under the copper liquid with an ash rake to be melted, and a composite covering agent is supplemented; before casting, rare earth element Y is added, and slag skimming treatment is carried out.

[0167] Specifically, in the embodiments of the present invention, the purification operation of the deoxidized melt supplemented with the composite covering agent by using the pre-constructed rare earth yttrium to obtain a purified melt includes:

[0168] Using a pre-constructed copper foil with a thickness of 0.1 mm to wrap the rare earth yttrium to obtain wrapped yttrium;

[0169] Using the ash rake to press the wrapped yttrium to a preset depth in the deoxidized melt to obtain a yttrium-added melt;

[0170] Performing a second stirring operation on the yttrium-added melt to obtain a purified melt, wherein the operation duration of the second stirring is 1-3 min.

[0171] Wherein, the preset depth is set to 3-5 cm for melting yttrium at the central position of the deoxidized melt.

[0172] Specifically, in the embodiments of the present invention, after the rare earth element Y is wrapped with a 0.1-mm-thick copper foil, it is pressed under the copper liquid surface with an ash rake until it is completely melted, and then stirred for 1-3 min, and the surface oxidation slag is removed. Among them, complete melting means that the rare earth element Y has no granularity, for example, less than 0.1 mm.

[0173] S4. Using a pre-constructed casting machine to perform semi-continuous casting on the refined melt alloy to obtain a copper-chromium-nickel-silicon alloy ingot.

[0174] Wherein, the casting machine refers to a device that transforms a melt alloy into a solid alloy and can specify the size of the solid alloy.

[0175] Wherein, the semi-continuous casting refers to a metal forming process between traditional continuous casting and discontinuous casting (such as sand casting, die casting). Its core principle is to continuously pour molten metal into a mold, pull out the billet downward at a controllable speed after the metal is partially solidified, and keep the upper molten metal continuously supplemented until the casting reaches the predetermined billet length and then stop pouring and take out the finished product.

[0176] Wherein, the copper-chromium-nickel-silicon alloy ingot is the name of the alloy expected in the present invention.

[0177] Specifically, in the embodiments of the present invention, the use of a pre-constructed casting machine to perform semi-continuous casting on the refined melt alloy to obtain a copper-chromium-nickel-silicon alloy ingot includes:

[0178] Pouring the refined melt alloy into a pre-constructed mold, wherein the mold is covered with the composite covering agent;

[0179] Using the mold to perform the first cooling on the refined melt alloy in the mold;

[0180] During the first cooling process, when the billet shell formed by solidifying the refined molten alloy is greater than a preset stretchable thickness threshold, the refined molten alloy is extracted using a pre-constructed traction device to obtain a semi-solid alloy.

[0181] The semi-solid alloy is secondarily cooled using pre-constructed deionized water to obtain a copper-chromium-nickel-silicon alloy ingot.

[0182] Among them, the mold is a cooling device.

[0183] Among them, the first cooling and the second cooling are characteristics of semi-continuous casting and have two cooling processes.

[0184] Among them, the stretchable thickness threshold is an empirical value. The goal is that as long as the billet shell formed by solidifying the refined molten alloy is greater than the stretchable thickness threshold, the drawing operation at a conventional speed will not cause the alloy to break.

[0185] Among them, the traction device is a device in the casting machine and is used to extract the semi-solid alloy. The semi-solid alloy refers to an alloy that can be subjected to subsequent drawing and is composed of a solid billet shell and a liquid melt.

[0186] Among them, the deionized water refers to high-purity water obtained by removing ionic impurities (such as sodium, calcium, chlorine, etc.) in water.

[0187] Specifically, in the embodiment of the present invention, through the method of semi-continuous casting, the alloy melt is first poured into a mold with circulating water cooling (primary cooling water). After the melt starts to solidify into a billet shell, it is pulled out by a traction device and continuously cooled with deionized water (secondary cooling water), thereby obtaining an ingot.

[0188] Specifically, in the embodiment of the present invention, during the cooling process, the cooling water flow rate for the first cooling is controlled at 50 - 60 m 3 / h, and the cooling water flow rate for the second cooling is controlled at 80 - 100 m 3 / h. The cooling water flow rate for the first time will affect the cooling intensity of the melt in the mold. When the cooling water flow rate is small, the cooling intensity is low, which easily leads to phenomena such as hot cracking or drawing leakage; when the cooling water flow rate is large, the cooling intensity is high, and the temperature gradient between the core and the surface of the ingot is large, thereby generating large casting stresses and causing intergranular cracks to appear in the ingot structure.

[0189] In the second cooling process, the cooling water is a deionized water solution. Its functions are, first, to accelerate the cooling rate of the ingot and inhibit the growth of ingot grains, and second, to avoid excessive oxidation scale and pitting and other corrosion defects during the cooling process of the ingot, causing stress concentration and affecting the quality of subsequent processing.

[0190] In detail, in an embodiment of the present invention, the step of pouring the refined molten alloy into a pre-constructed crystallizer comprises:

[0191] Obtaining a converter containing natural gas combustion, and utilizing the converter to flow the refined molten alloy into a pre-constructed chute, wherein the chute is covered with a baked dry deslagging agent and graphite powder mixture;

[0192] filtering the refined molten alloy using a ceramic filter pre-constructed in the chute to obtain a particle-free molten alloy;

[0193] The particle-free molten alloy is poured into the crystallizer by using a pouring pipe pre-constructed in the chute, wherein the pouring pipe is located at a depth of 3.5 to 4.5 cm below the liquid level in the crystallizer.

[0194] The converter refers to a transfer device that allows the refined molten alloy to be transferred to another device without contacting the external air or cooling down.

[0195] The chute is a tubular passage that allows the refined molten alloy to move along the chute.

[0196] Wherein, the ceramic filter is a mesh device to ensure that some particles cannot flow into the crystallizer.

[0197] The pouring pipe refers to the part of the chute inside the crystallizer. The pouring pipe is located below the liquid level of the crystallizer to prevent the refined molten alloy from splashing.

[0198] Specifically, in the embodiment of the present invention, during the pouring process, the flow trough is covered with a mixture of a baked and dried slag remover and graphite powder, the crystallizer is covered with a composite covering agent, the converter process is protected by burning natural gas, a ceramic filter is installed on the flow trough to prevent oxide slag such as silicon and magnesium from being drawn into the crystallizer and causing slag inclusion, and the pouring pipe is buried in the crystallizer liquid level to a depth of 3.5-4.5 cm.

[0199] In detail, in an embodiment of the present invention, after injecting the particle-free molten alloy into the crystallizer, the method further includes:

[0200] In the process of injecting the particle-free molten alloy into the crystallizer, obtaining the volume proportion of the particle-free molten alloy in the crystallizer;

[0201] When the volume proportion is greater than or equal to a preset full threshold, the casting machine and the pre-built vibration trolley are started, wherein the vibration frequency of the vibration trolley is 50-60 rpm / min and the vibration amplitude is 3-5 mm.

[0202] Wherein, the volume ratio refers to the ratio between the volume of the refined molten alloy in the mold and the rated capacity of the mold. The full threshold can be configured to be 95% - 98%.

[0203] Wherein, the vibration trolley is a device that provides vibration signals, and its core function is to improve the metal solidification process, reduce defects, and enhance material properties.

[0204] In the embodiment of the present invention, during the process of injecting the particle-free molten alloy into the mold, the volume ratio of the particle-free molten alloy in the mold is obtained. When the volume ratio is greater than or equal to a preset full threshold, the casting machine and a pre-built vibration trolley are started. Among them, the vibration frequency of the vibration trolley is 50 - 60 rpm / min, and the vibration amplitude is 3 - 5 mm.

[0205] Specifically, in the embodiment of the present invention, for the continuous casting process, the starting speed is 70 ± 5 mm / min, and the normal speed is 105 ± 5 mm / min. When the continuous casting speed is too low, the continuous casting resistance is too large, which is likely to form defects such as cold laps, and at the same time, the production efficiency is low; the greater the continuous casting speed, the greater the depth of the liquid cavity, which is not conducive to feeding during the subsequent solidification shrinkage process, and at the same time, the solidified shell is thinner, and thermal cracks are likely to occur during the production process.

[0206] In the embodiment of the present invention, to verify the above process, an embodiment test is carried out to obtain experimental results.

[0207] Example 1:

[0208] 1. Batching: Calculate the required dry raw materials according to the weight percentage content. The composition of the copper-chromium-nickel-silicon alloy is shown in Table 1:

[0209]

[0210]

[0211]

[0212] Table 1 Alloy composition formulas of Examples 1 - 5 and Comparative Examples 1 - 11 (wt.%)

[0213] 2. Melting: In a 6-ton melting furnace, alloy raw materials are sequentially added with electrolytic copper, 10% Cu-Cr master alloy, 20% Cu-Ni master alloy, 60% Ni-Si master alloy, 30% Cu-Mn master alloy, 10% Cu-Mg master alloy, and zinc ingots for melting. The melting temperature is 1250°C. A composite covering agent is added to the molten copper in the furnace. Among them, the thickness of the L-70H type covering agent is 32 mm, and the thickness of the calcined charcoal powder covering agent is 20 mm. First, add the L-70H type covering agent, and then add the calcined charcoal powder covering agent. After the metal is completely melted, stir it to make the molten metal mixture homogeneous;

[0214] 3. Refining: After the alloy raw materials are melted, add a slag removing agent, stir for 2 min, let the melt stand for 8 min, conduct a composition inspection after skimming the slag. After passing the inspection, introduce argon for degassing for 28 min. Then add a deoxidizer, press the deoxidizer under the molten copper with an ash rake to melt it, and supplement the composite covering agent. Before tapping, add rare earth element Y wrapped in a 0.1-mm-thick copper foil, and conduct slag skimming treatment;

[0215] 4. Semi-continuous casting: The launder is covered with a mixture of a baked and dried slag removing agent and graphite powder, the mold is covered with a composite covering agent, the converter process is protected by burning natural gas. A ceramic filter is installed on the launder, and the pouring tube is buried 4 cm deep into the liquid level of the mold. When the melt is about to fill the mold, start the casting machine and the vibrating trolley; The casting temperature is 1230°C, the initial speed of the pulling device for casting is 70 mm / min, the normal casting speed is 105 mm / min, the flow rate of the primary cooling water is 55 m3 / h, the flow rate of the secondary cooling water (deionized water) is 90 m3 / h, the vibration frequency of the vibrating trolley is 55 rpm / min, and the vibration amplitude is 4 mm, obtaining an alloy ingot with a specification size of 200*600 mm and a length of 5880 mm.

[0216] Example 2:

[0217] 1. Batching: Calculate the required dry raw materials according to the weight percentage content. The composition of the copper-chromium-nickel-silicon alloy is shown in Table 1;

[0218] 2. Melting: In a 6-ton melting furnace, alloy raw materials are sequentially added with electrolytic copper, 10% Cu-Cr master alloy, 20% Cu-Ni master alloy, 60% Ni-Si master alloy, 30% Cu-Mn master alloy, 10% Cu-Mg master alloy, and zinc ingots for melting. The melting temperature is 1240°C. A composite covering agent is added to the molten copper in the furnace. Among them, the thickness of the L-70H type covering agent is 35 mm, and the thickness of the calcined charcoal powder covering agent is 22 mm. First, add the L-70H type covering agent, and then add the calcined charcoal powder covering agent. After the metal is completely melted, stir it to make the molten metal mixture homogeneous;

[0219] 3. Refining: After the alloy raw materials are melted, a slag remover is added and stirred for 1 min. The melt is allowed to stand for 10 min. After slag skimming, a composition inspection is carried out. After passing the inspection, argon is introduced for degassing for 40 min. Then a deoxidizer is added, and the deoxidizer is pressed under the copper liquid with an ash rake to melt, and the composite covering agent is replenished. Before tapping, rare earth element Y wrapped in a 0.1-mm-thick copper foil is added, and slag skimming is carried out;

[0220] 4. Semi-continuous casting: The launder is covered with a mixture of a baked and dried slag remover and graphite powder, the mold is covered with a composite covering agent, the converter process is protected by burning natural gas, a ceramic filter is installed on the launder, the pouring tube is buried into the mold liquid level to a depth of 3.5 cm, and the casting machine and the vibrating trolley are started when the melt is about to fill the mold; The casting temperature is 1220 °C, the starting speed of the drawing device for continuous casting is 65 mm / min, the normal drawing speed is 100 mm / min, the flow rate of the primary cooling water is 50 m3 / h, the flow rate of the secondary cooling water (deionized water) is 80 m3 / h, the vibration frequency of the vibrating trolley is 50 rpm / min, and the vibration amplitude is 3 mm, obtaining an alloy ingot with a specification size of 200*600 mm and a length of 5882 mm.

[0221] Example 3:

[0222] 1. Batching: Calculate the required dry raw materials according to the weight percentage content. The composition of the copper-chromium-nickel-silicon alloy is shown in Table 1;

[0223] 2. Melting: In a 6-ton melting furnace, the alloy raw materials are sequentially added with electrolytic copper, 10% Cu-Cr master alloy, 20% Cu-Ni master alloy, 60% Ni-Si master alloy, 30% Cu-Mn master alloy, 10% Cu-Mg master alloy, and zinc ingots for melting. The melting temperature is 1260 °C. A composite covering agent is added to the copper liquid in the furnace, where the thickness of the L-70H type covering agent is 34 mm and the thickness of the calcined charcoal powder covering agent is 21 mm. First, the L-70H type covering agent is added, and then the calcined charcoal powder covering agent is added. After the metal is completely melted, stirring is carried out to make the metal melt mix evenly;

[0224] 3. Refining: After the alloy raw materials are melted, a slag remover is added and stirred for 3 min. The melt is allowed to stand for 5 min. After slag skimming, a composition inspection is carried out. After passing the inspection, argon is introduced for degassing for 25 min. Then a deoxidizer is added, and the deoxidizer is pressed under the copper liquid with an ash rake to melt, and the composite covering agent is replenished. Before tapping, rare earth element Y wrapped in a 0.1-mm-thick copper foil is added, and slag skimming is carried out;

[0225] 4. Semi - continuous casting: The runner is covered with a mixture of slag - removing agent and graphite powder baked and dried, the mold is covered with a composite covering agent, the converter process is protected by burning natural gas, a ceramic filter screen is installed on the runner, the pouring tube is buried into the liquid level of the mold to a depth of 4.5 cm, and the casting machine and the vibrating trolley are started when the melt is about to fill the mold; the casting temperature is 1240 °C, the starting speed of the drawing device is 75 mm / min, the normal drawing speed is 110 mm / min, the flow rate of the primary cooling water is 60 m3 / h, the flow rate of the secondary cooling water (deionized water) is 100 m3 / h, the vibration frequency of the vibrating trolley is 60 rpm / min, and the vibration amplitude is 5 mm, obtaining an alloy ingot with a specification size of 200*600 mm and a length of 5883 mm.

[0226] Example 4:

[0227] Compared with Example 1, the difference lies in the different contents and ratios of the main elements Cr, Ni, and Si. See Table 1 for details.

[0228] Example 5:

[0229] Compared with Example 1, the difference lies in the different contents and ratios of the main elements Cr, Ni, and Si. See Table 1 for details.

[0230] Specifically, in the embodiments of the present invention, a control experiment is also used as a comparative example. For example, the reaction temperature is 20 - 50 °C, and a test scheme corresponding to a reaction temperature outside the range of 20 - 50 can be provided.

[0231] Comparative Example 1:

[0232] The difference from Example 1 is that an excessive amount of Ni element is added, and the addition amount is 4%.

[0233] Comparative Example 2:

[0234] The difference from Example 1 is that an excessive amount of Mn element is added, and the addition amount is 3%.

[0235] Comparative Example 3:

[0236] The difference from Example 1 is that no Mg element is added.

[0237] Comparative Example 4:

[0238] The difference from Example 1 is that no Zn element is added.

[0239] Comparative Example 5:

[0240] The difference from Example 1 is that Ni and Si within the addition component range are added, but the Ni:Si value is greater than 4.5:1.

[0241] Comparative Example 6:

[0242] It is different from Example 1 in that Ni and Si are within the range of added components, but the value of Ni:Si is less than 3:1.

[0243] Comparative Example 7:

[0244] It is different from Example 1 in that Cr and Ni are within the range of added components, but the value of Cr:Ni is greater than 0.2:1.

[0245] Comparative Example 8:

[0246] It is different from Example 1 in that Cr and Ni are within the range of added components, but the value of Cr:Ni is less than 0.07:1.

[0247] Comparative Example 9:

[0248] It is different from Example 1 in that the composite covering agent is replaced with dry graphite.

[0249] Comparative Example 10:

[0250] It is different from the example in that the secondary cooling water is replaced with tap water.

[0251] Comparative Example 11:

[0252] It is different from Example 1 in that the ceramic filter is replaced with a dry graphite baffle.

[0253] Specifically, the present invention conducts grain size, ingot surface quality, and post-hot rolling quality inspections on the ingots provided in Examples 1-5 and Comparative Examples 1-11. The hot rolling process is as follows: walking beam furnace (heating temperature 850-1040°C, heating time 3-4h) - material receiving - rolling (total processing rate ≥ 90%, final rolling temperature ≥ 650°C) - cooling (emulsion with a concentration of 1.0-2.0%) - coiling - discharging. Each ingot is tested 25 batches repeatedly.

[0254] The results are shown in Table 2:

[0255]

[0256]

[0257] Table 2 Alloy properties and microstructure of Examples 1-5 and Comparative Examples 1-11

[0258] To solve the problems described in the background art, the present invention first obtains the proportioned raw materials. Among them, the proportioned raw materials are first based on a copper-nickel-silicon alloy and Cr element is added, which can improve the mechanical properties of the alloy and obtain high electrical conductivity. However, since Cr is extremely easy to be oxidized and burned out at high temperatures, Mn and Mg elements are added to reduce the oxygen content in the alloy melt. Then, the present invention performs a smelting operation. During the smelting process, the present solution uses a deoxidizer and a slag remover to reduce the slag inclusion in the melt. Combining with the slag removal effect of rare earth elements, casting is completed under a composite covering agent and argon protection, realizing the clean preparation of alloy ingots and improving the thermal stability of the alloy, which is beneficial to the subsequent hot rolling process. In addition, due to the addition of high melting point elements such as Ni and Cr and active elements such as Mg in the alloy elements, the melt has high temperature gas absorption, viscosity and poor fluidity during the melting and casting process, resulting in defects such as porosity, skinning and shrinkage porosity in the ingot. Therefore, the main alloy elements are added in the form of master alloys, and Zn element is added at the same time to improve the fluidity of the alloy melt, reduce defects such as composition segregation and shrinkage cavity, and make the proportioned raw materials more suitable for the ingot process. Further, by using the optimized casting parameters, the refining and casting processes are realized, and a more suitable alloy ingot is obtained. Therefore, the present invention can improve the mechanical properties and electrical conductivity of the alloy on the basis of ensuring the thermal stability and melt fluidity of the alloy.

[0259] As Figure 2 shown, it is a functional module diagram of an optimization system for copper-chromium-nickel-silicon alloy ingots based on multi-parameter co-melting provided by an embodiment of the present invention.

[0260] The optimization system 100 for copper-chromium-nickel-silicon alloy ingots based on multi-parameter co-melting described in the present invention can be installed in an electronic device. According to the functions realized, the optimization system 100 for copper-chromium-nickel-silicon alloy ingots based on multi-parameter co-melting can include a feeding module 101, a smelting module 102, a refining module 103 and a casting module 104. The modules described in the present invention can also be referred to as units, which refer to a series of computer program segments that can be executed by a processor of an electronic device and can complete fixed functions, and are stored in the memory of the electronic device.

[0261] The feeding module 101 is used to obtain the proportioned raw materials from the pre-constructed raw material set according to the pre-constructed copper-chromium-nickel-silicon alloy composition sequence;

[0262] The smelting module 102 is used to smelt each raw material in the proportioned raw materials according to the pre-configured smelting temperature and the pre-constructed composite covering agent to obtain a molten alloy;

[0263] The refining module 103 is used to refine the molten alloy to obtain a refined molten alloy;

[0264] The casting module 104 is used to semi - continuously cast the refined molten alloy by using a pre - built casting machine to obtain a copper - chromium - nickel - silicon alloy ingot.

[0265] Specifically, each module in the copper - chromium - nickel - silicon alloy ingot optimization system 100 based on multi - parameter co - melting in the embodiments of the present invention adopts the same technical means as the Figure 1 copper - chromium - nickel - silicon alloy ingot optimization method based on multi - parameter co - melting described above, and can produce the same technical effects, which will not be elaborated here.

[0266] As Figure 3 shown, it is a schematic structural diagram of an electronic device for implementing the copper - chromium - nickel - silicon alloy ingot optimization method based on multi - parameter co - melting provided by an embodiment of the present invention.

[0267] The electronic device 1 may include a processor 10, a memory 11 and a bus 12, and may also include a computer program stored in the memory 11 and operable on the processor 10, such as a copper - chromium - nickel - silicon alloy ingot optimization method program based on multi - parameter co - melting.

[0268] Among them, the memory 11 includes at least one type of readable storage medium. The readable storage medium includes flash memory, mobile hard disk, multimedia card, card - type memory (such as SD or DX memory, etc.), magnetic memory, magnetic disk, optical disk, etc. The memory 11 may be an internal storage unit of the electronic device 1 in some embodiments, such as the mobile hard disk of the electronic device 1. The memory 11 may also be an external storage device of the electronic device 1 in other embodiments, such as a plug - in mobile hard disk, a Smart Media Card (SMC), a Secure Digital (SD) card, a Flash Card, etc. equipped on the electronic device 1. Further, the memory 11 also includes the internal storage unit of the electronic device 1 and the external storage device. The memory 11 can be used not only to store application software installed in the electronic device 1 and various types of data, such as the code of the copper - chromium - nickel - silicon alloy ingot optimization method program, but also to temporarily store data that has been output or will be output.

[0269] In some embodiments, the processor 10 may be composed of an integrated circuit. For example, it may be composed of a single packaged integrated circuit, or may be composed of multiple packaged integrated circuits with the same or different functions, including a combination of one or more central processing units (CPUs), microprocessors, digital processing chips, graphics processors, and various control chips. The processor 10 is the control core (Control Unit) of the electronic device, connecting various components of the entire electronic device through various interfaces and circuits, and executing various functions of the electronic device 1 and processing data by running or executing programs or modules (such as the program for optimizing the copper-chromium-nickel-silicon alloy ingot based on multi-parameter co-fusion, etc.) stored in the memory 11, and calling the data stored in the memory 11.

[0270] The bus 12 may be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus, etc. The bus 12 can be divided into an address bus, a data bus, a control bus, etc. The bus 12 is set to realize the connection and communication between the memory 11 and at least one processor 10, etc.

[0271] Figure 3 Only the electronic device with components is shown. Those skilled in the art can understand that Figure 3 the shown structure does not constitute a limitation on the electronic device 1, and it may include fewer or more components than shown, or combine certain components, or have a different component arrangement.

[0272] For example, although not shown, the electronic device 1 may further include a power source (such as a battery) for supplying power to each component. Preferably, the power source can be logically connected to the at least one processor 10 through a power management device, so as to realize functions such as charge management, discharge management, and power consumption management through the power management device. The power source may also include any components such as one or more DC or AC power sources, a recharge device, a power failure detection circuit, a power converter or inverter, and a power status indicator. The electronic device 1 may also include various sensors, a Bluetooth module, a Wi-Fi module, etc., which will not be elaborated here.

[0273] Furthermore, the electronic device 1 may further include a network interface. Optionally, the network interface may include a wired interface and / or a wireless interface (such as a WI-FI interface, a Bluetooth interface, etc.), which is usually used to establish a communication connection between the electronic device 1 and other electronic devices.

[0274] Optionally, the electronic device 1 may further include a user interface, which may be a display, an input unit (such as a keyboard), and optionally, the user interface may also be a standard wired interface or a wireless interface. Optionally, in some embodiments, the display may be an LED display, a liquid crystal display, a touch liquid crystal display, and an OLED (Organic Light-Emitting Diode) toucher, etc. Among them, the display may also be appropriately referred to as a display screen or a display unit, which is used to display the information processed in the electronic device 1 and to display a visual user interface.

[0275] The program of the optimized method for copper-chromium-nickel-silicon alloy ingots based on multi-parameter co-fusion stored in the memory 11 of the electronic device 1 is a combination of multiple instructions. When running in the processor 10, it can achieve:

[0276] According to the pre-built copper-chromium-nickel-silicon alloy composition sequence, obtain the proportioned raw materials from the pre-built raw material set;

[0277] According to the pre-configured melting temperature and the pre-built composite covering agent, melt each raw material in the proportioned raw materials to obtain a molten alloy;

[0278] Refine the molten alloy to obtain a refined molten alloy;

[0279] Use the pre-built casting machine to perform semi-continuous casting on the refined molten alloy to obtain a copper-chromium-nickel-silicon alloy ingot.

[0280] Specifically, for the specific implementation method of the above instructions by the processor 10, reference can be made to Figures 1 to 3 the description of the relevant steps in the corresponding embodiments, which will not be elaborated here.

[0281] Furthermore, if the integrated module / unit of the electronic device 1 is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. The computer-readable storage medium can be volatile or non-volatile. For example, the computer-readable medium may include: any entity or device capable of carrying the computer program code, a recording medium, a USB flash drive, a mobile hard disk, a magnetic disk, an optical disc, a computer memory, a read-only memory (ROM, Read-Only Memory).

[0282] The present invention also provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by the processor of the electronic device, it can achieve:

[0283] According to the pre-built copper-chromium-nickel-silicon alloy composition sequence, obtain the proportioned raw materials from the pre-built raw material set;

[0284] According to the pre-configured melting temperature and the pre-built composite covering agent, melt each raw material in the proportioned raw materials to obtain a molten alloy;

[0285] Refine the molten alloy to obtain a refined molten alloy;

[0286] Use the pre-built casting machine to semi-continuously cast the refined molten alloy to obtain a copper-chromium-nickel-silicon alloy ingot.

[0287] In several embodiments provided by the present invention, it should be understood that the disclosed devices, systems and methods can be implemented in other ways. For example, the system embodiments described above are only illustrative, and there may be other partitioning methods in actual implementation.

[0288] The modules described as separation components may or may not be physically separated. The components shown as modules may or may not be physical units, that is, they may be located in one place or distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0289] In addition, the functional modules in each embodiment of the present invention can be integrated in a processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit. The above integrated units can be implemented in the form of hardware or in the form of a combination of hardware and software functional modules.

[0290] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms.

[0291] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A copper-chromium-nickel-silicon alloy ingot optimization method based on multi-parameter eutectic, characterized in that: The method comprises: According to the pre-constructed copper-chromium-nickel-silicon alloy component sequence, a proportioned raw material is obtained from a pre-constructed raw material set; According to the pre-configured melting temperature and the pre-constructed composite covering agent, each raw material in the ratio of raw materials is melted to obtain a molten alloy; Refining the molten alloy to obtain a refined molten alloy; The refined molten alloy is semi-continuously casted by using a pre-built casting machine to obtain a copper-chromium-nickel-silicon alloy ingot.

2. The copper-chromium-nickel-silicon alloy ingot optimization method based on multi-parameter eutectic according to claim 1, characterized in that: The method of obtaining a proportioned raw material from a pre-constructed raw material set according to the pre-constructed copper-chromium-nickel-silicon alloy component sequence comprises: Obtaining the copper-chromium-nickel-silicon alloy component sequence, wherein the copper-chromium-nickel-silicon alloy component sequence includes, by mass percentage, 0.2-0.5% chromium, 2-3% nickel, 0.5-0.8% silicon, 0.05-0.15% manganese, 0.01-0.1% magnesium, 0.05-0.15% zinc, 0.01-0.1% yttrium, and the remainder is copper and other unavoidable impurities; Obtaining the raw material set, wherein the raw material set includes electrolytic copper, zinc ingot, and 10% Cu-Cr master alloy, 20% Cu-Ni master alloy, 60% Ni-Si master alloy, 30% Cu-Mn master alloy, 10% Cu-Mg master alloy and 20% Cu-Y master alloy in proportion by component mass; Allocating the element sources of the raw material set based on the elements in the copper-chromium-nickel-silicon alloy component sequence to obtain an element source sequence; According to the element source sequence and the copper-chromium-nickel-silicon alloy component sequence, the amount of the intermediate alloy of each element is calculated to obtain the intermediate alloy amount sequence, and the sum of the amounts of each intermediate alloy in the intermediate alloy amount sequence is calculated to obtain the total alloy amount; According to the total amount of the alloy, obtaining the amount of copper; According to the sequence of the intermediate alloy dosage and the copper dosage, the raw material set is weighed to obtain the proportioned raw materials.

3. The copper-chromium-nickel-silicon alloy ingot optimization method based on multi-parameter eutectic as claimed in claim 2, characterized in that: The method of calculating the amount of the intermediate alloy of each element according to the element source sequence and the copper-chromium-nickel-silicon alloy component sequence to obtain the intermediate alloy amount sequence includes: Determine whether each element source in the element source sequence is a preset single alloy source, and obtain an element source determination result; According to the element source judgment result, the element whose element source is the single alloy source is calculated based on the pre-constructed intermediate alloy dosage to obtain the single source alloy dosage, wherein the expression for calculating the intermediate alloy dosage is expressed as: Wherein, G(·) represents the expression for calculating the amount of the master alloy, the amount of Cu-Cr represents a 10% Cu-Cr master alloy, A represents the proportion of elements in the copper-chromium-nickel-silicon alloy composition sequence, and when the master alloy is a 10% Cu-Cr master alloy, A represents the proportion of the Cr element, and B represents the alloy ratio of the master alloy, and when the master alloy is a 10% Cu-Cr master alloy, B represents 10%; According to the element source judgment result, the element sources that are not the single alloy sources are classified to obtain pure sources and mixed sources, the elements contained in both the pure source and the mixed source are used as target elements, the elements in the mixed source other than the target elements are used as joint elements, and the element ratio between the target elements and the joint elements in the mixed source is obtained; According to the expression for calculating the amount of the intermediate alloy, the alloy amount based on the mixed source is calculated for the combined element to obtain the mixed source alloy amount, and the mixed source alloy amount and element ratio are weighted calculated to obtain the first component of the target element; Obtaining an alloy composition of a target element from the copper-chromium-nickel-silicon alloy composition sequence to obtain a target alloy composition, and calculating a difference between the target alloy composition and a first composition of the target element to obtain a second composition of the target element; According to the expression for calculating the amount of the intermediate alloy and the second component of the target element, the amount of the alloy from the pure source is obtained to obtain the amount of the alloy from the pure source; The amounts of the mixed-source alloys, the pure-source alloys and the single-source alloys are summarized to obtain a sequence of intermediate alloy amounts.

4. The copper-chromium-nickel-silicon alloy ingot optimization method based on multi-parameter eutectic as claimed in claim 3, characterized in that: The method comprises: smelting each raw material in the ratio raw material according to the pre-configured smelting temperature and the pre-constructed composite covering agent to obtain a molten alloy, comprising: Obtain the predicted nucleation temperature of the copper-chromium-nickel-silicon alloy component sequence, increase the preset first threshold according to the predicted nucleation temperature, and obtain the melting temperature, wherein the predicted nucleation temperature is configured to be 1140-1160°C, and the melting temperature is 1240-1260°C Obtaining a composite covering agent, wherein the composite covering agent comprises an L-70H covering agent and calcined charcoal powder, wherein the L-70H covering agent has a thickness of ≥32 mm, and the calcined charcoal powder covering agent has a thickness of ≥20 mm; Using the L-70H type covering agent, covering the proportioned raw materials to obtain a primary covering; Covering the primary covering material with the calcined charcoal powder covering agent to obtain a material to be calcined; The material to be calcined is melted according to the smelting temperature to obtain a molten alloy.

5. The copper-chromium-nickel-silicon alloy ingot optimization method based on multi-parameter eutectic as claimed in claim 4, characterized in that: The step of refining the molten alloy to obtain a refined molten alloy comprises: Adding a slag removal agent to the molten alloy and performing a first stirring operation to obtain a slag removal melt, wherein the first stirring operation duration is 1 to 3 minutes; The deslagging melt is allowed to stand, and the oxide slag precipitated on the surface of the deslagging melt is screened out to obtain a qualified melt, wherein the standing operation time is 5 to 10 minutes; Using pre-constructed argon gas, degassing the qualified melt to obtain a degassed melt, wherein the degassing operation lasts for 25 to 30 minutes; Using a pre-constructed ash rake, the pre-constructed deoxidizer is pressed into the degassing melt to melt, thereby obtaining a deoxidized melt; The composite covering agent is added to the deoxidized melt according to a preset supplementary amount, and the deoxidized melt to which the composite covering agent is added is purified by using the pre-constructed rare earth yttrium to obtain a purified melt; The purified melt is subjected to slag removal treatment to obtain a refined melt alloy.

6. The copper-chromium-nickel-silicon alloy ingot optimization method based on multi-parameter eutectic as claimed in claim 5, characterized in that: The method of using the pre-constructed rare earth yttrium to purify the deoxidized melt supplemented with the composite covering agent to obtain the purified melt comprises: Using a pre-constructed 0.1 mm thick copper foil to wrap the rare earth yttrium to obtain wrapped yttrium; Using the ash rake, the yttrium is pressed to a preset depth of the deoxidized melt to obtain an yttrium-added melt; The yttrium-added melt is subjected to a second stirring operation to obtain a purified melt, wherein the second stirring operation duration is 1 to 3 minutes.

7. The copper-chromium-nickel-silicon alloy ingot optimization method based on multi-parameter eutectic according to claim 6, characterized in that: The method of using a pre-built casting machine to semi-continuously cast the refined molten alloy to obtain a copper-chromium-nickel-silicon alloy ingot comprises: pouring the refined molten alloy into a pre-constructed crystallizer, wherein the crystallizer is covered with the composite covering agent; Using the crystallizer to perform a first cooling on the refined molten alloy in the crystallizer; During the first cooling process, when the solidified shell of the refined molten alloy is larger than a preset stretchable thickness threshold, the refined molten alloy is extracted by using a pre-built pulling device to obtain a semi-solidified alloy; The semi-solidified alloy is cooled for a second time by using pre-constructed deionized water to obtain a copper-chromium-nickel-silicon alloy ingot.

8. The copper-chromium-nickel-silicon alloy ingot optimization method based on multi-parameter eutectic as claimed in claim 7, characterized in that: The step of pouring the refined molten alloy into a pre-constructed crystallizer comprises: Obtaining a converter containing natural gas combustion, and utilizing the converter to flow the refined molten alloy into a pre-constructed chute, wherein the chute is covered with a baked dry deslagging agent and graphite powder mixture; filtering the refined molten alloy using a ceramic filter pre-constructed in the chute to obtain a particle-free molten alloy; The particle-free molten alloy is poured into the crystallizer by using a pouring pipe pre-constructed in the chute, wherein the pouring pipe is located at a depth of 3.5 to 4.5 cm below the liquid level in the crystallizer.

9. The copper-chromium-nickel-silicon alloy ingot optimization method based on multi-parameter eutectic according to claim 8, characterized in that: After injecting the particle-free molten alloy into the crystallizer, the method further comprises: In the process of injecting the particle-free molten alloy into the crystallizer, obtaining the volume proportion of the particle-free molten alloy in the crystallizer; When the volume proportion is greater than or equal to a preset full threshold, the casting machine and the pre-built vibration trolley are started, wherein the vibration frequency of the vibration trolley is 50-60 rpm / min and the vibration amplitude is 3-5 mm.

10. A copper-chromium-nickel-silicon alloy ingot optimization system based on multi-parameter eutectic, characterized in that: The system comprises: A feed module, used for obtaining proportioned raw materials from a pre-constructed raw material set according to a pre-constructed copper-chromium-nickel-silicon alloy component sequence; A smelting module, used for smelting each raw material in the ratio of raw materials according to a pre-configured smelting temperature and a pre-constructed composite covering agent to obtain a molten alloy; A refining module, used for refining the molten alloy to obtain a refined molten alloy; The casting module is used for semi-continuously casting the refined molten alloy using a pre-built casting machine to obtain a copper-chromium-nickel-silicon alloy ingot.

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