Modification treatment control method in preparation of high-strength and high-conductivity copper lead

Abstract

The invention relates to the technical field of alloy preparation, and particularly discloses a modification treatment control method in preparation of a high-strength and high-conductivity copper lead, which is characterized in that gas flow direction adjustment analysis is carried out on gas counteracting monitoring points in a gas flow counteracting retention coincidence subarea, the gas flow direction adjustment angle is determined, and the flow direction of inert gas can be changed; according to the technical scheme, a more reasonable airflow path is formed in the furnace, the originally counteracted airflow can flow in a new direction after being adjusted, hedging and disorder between the airflow are reduced, airflow dead angles in the furnace can be eliminated, the problem that cast ingots are annealed unevenly due to insufficient local airflow is solved, and the quality of cast ingots is improved. And the phenomenon that the gas angle is offset with other gas flow directions after being adjusted is also avoided.

Description

Technical Field

[0001] This invention relates to the field of alloy preparation technology, specifically to a method for controlling the modification treatment in the preparation of high-strength, high-conductivity copper leads. Background Technology

[0002] In the fabrication of high-strength, high-conductivity copper leads, modification treatment is a crucial step in improving the performance of copper alloys, and annealing is an indispensable and important step within modification treatment. Annealing can eliminate residual stress inside the ingot, improve the microstructure, and thus enhance the overall performance of the copper leads. However, when annealing ingots in an annealing furnace by introducing inert gas, the uniformity of the gas flow distribution within the furnace has a vital impact on the annealing effect. Due to the complex internal structure of the annealing furnace, the inert gas is easily affected by various factors during the introduction process, leading to uneven gas flow distribution within the furnace. This uneven gas flow distribution can cause a series of problems.

[0003] Currently, while some methods attempt to improve airflow distribution within annealing furnaces, most lack precise monitoring and effective control of the airflow state. For example, some methods improve airflow distribution solely through simple vent designs or airflow guiding devices, but because they cannot provide real-time information about the specific airflow conditions within the furnace, targeted adjustments based on the actual airflow status are difficult, resulting in limited improvement. Furthermore, existing methods lack systematic analysis and precise control mechanisms when dealing with airflow offsetting and stagnation issues, failing to effectively address problems such as localized ingot oxidation, insufficient annealing, and subsequent processing defects caused by uneven airflow.

[0004] Therefore, the present invention provides a method for controlling the degradation treatment in the preparation of high-strength and high-conductivity copper leads. Summary of the Invention

[0005] The purpose of this invention is to provide a method for controlling the degradation treatment in the preparation of high-strength, high-conductivity copper leads, so as to solve the above-mentioned background problems.

[0006] The objective of this invention can be achieved through the following technical solutions:

[0007] A method for controlling degradation treatment during the fabrication of high-strength, high-conductivity copper leads, comprising:

[0008] During the process of introducing inert gas into the ingot in the annealing furnace from multiple different directions, a furnace airflow monitoring cycle is set. During the furnace airflow monitoring cycle, the airflow in each airflow monitoring sub-zone divided within the furnace monitoring area is monitored for stagnation, and the airflow stagnation sub-zone is screened out.

[0009] During the furnace airflow monitoring cycle, airflow cancellation analysis is performed on the airflow monitoring sub-areas divided within the furnace monitoring area. Airflow cancellation sub-areas are screened out and spatially overlapped with airflow stagnation sub-areas to determine the overlapping airflow cancellation and stagnation sub-areas.

[0010] If the cause of the airflow stagnation sub-region is inert gas offset, then a flow direction angle coordinate system is constructed. Based on the number of adjacent flow offsets and the distribution dimension of adjacent flow offsets, the gas flow direction adjustment analysis is performed on the gas offset monitoring points in the overlapping sub-region of airflow offset stagnation, and the gas flow direction adjustment angle is determined.

[0011] As a further aspect of the present invention, the airflow in each airflow monitoring sub-zone within the furnace monitoring area is monitored for retention, as follows:

[0012] The furnace airflow monitoring cycle is divided into several airflow monitoring nodes, and the edge vertex and center point of the airflow monitoring sub-region are selected as the airflow monitoring spatial points respectively.

[0013] The oxygen concentration at each airflow monitoring point at each airflow monitoring node is obtained, and the average value of the summation is calculated to obtain the average oxygen concentration at each node.

[0014] The oxygen concentration monitoring value is obtained by summing the average oxygen concentration values ​​of all airflow monitoring nodes.

[0015] The oxygen concentration difference between adjacent nodes is obtained by subtracting the mean oxygen concentration of adjacent nodes and taking the absolute value. The oxygen concentration change is obtained by summing and averaging the oxygen concentration differences of all adjacent nodes.

[0016] As a further aspect of the present invention, the screening process for the airflow retention sub-region is as follows:

[0017] The airflow stagnation screening value is obtained by calculating the ratio of the oxygen concentration monitoring value to the oxygen concentration change value.

[0018] If the airflow stagnation screening value is greater than or equal to the airflow stagnation screening threshold, it will be displayed as an airflow stagnation signal, and the airflow monitoring sub-area that displays the airflow stagnation signal will be marked as an airflow stagnation sub-area.

[0019] As a further aspect of the present invention, the process of constructing the flow direction angle coordinate system is as follows:

[0020] Extract airflow monitoring spatial points within the airflow monitoring sub-region and obtain the gas flow direction angle at each airflow monitoring spatial point. Construct a flow direction angle coordinate system with the airflow monitoring spatial point as the origin. The first quadrant interval of the flow direction angle coordinate system is 0º~90º, the second quadrant interval is 90º~180º, the third quadrant interval is 180º~270º, and the fourth quadrant interval is 270º~360º.

[0021] As a further aspect of the present invention, the process of performing airflow cancellation analysis on the airflow monitoring sub-regions divided within the furnace monitoring area from the dimension of adjacent flow direction cancellation quantity is as follows:

[0022] By combining two gas flow direction angles that are located in any quadrant of the flow direction angle coordinate system, multiple sets of gas flow direction angle analysis groups are obtained.

[0023] If the two gas flow angles in the gas flow angle analysis group are on the same straight line, it means that the inert gases of the two gas flow angles cancel each other out, and it is marked as a flow cancellation group.

[0024] The proportion of the number of flow direction offset groups to the total number of gas flow direction angle analysis groups is used as the flow direction offset ratio.

[0025] As a further aspect of the present invention, the process of performing airflow cancellation analysis on the airflow monitoring sub-regions divided within the furnace monitoring area from the perspective of adjacent flow direction cancellation distribution is as follows:

[0026] Within the flow direction cancellation group, the gas flow velocity at two gas flow direction angles is obtained respectively. After the difference is taken and the absolute value is calculated, the ratio is calculated with the gas flow velocity threshold to obtain the flow direction cancellation velocity difference ratio. The flow direction cancellation velocity difference ratio of each flow direction cancellation group is summed and the average value is calculated to obtain the flow direction cancellation degree value.

[0027] As a further aspect of the present invention, the screening process for the airflow offset sub-region is as follows:

[0028] The airflow cancellation ratio and the airflow cancellation degree value are summed to obtain the airflow cancellation analysis value;

[0029] If the airflow cancellation analysis value is greater than the airflow cancellation analysis threshold, the airflow monitoring sub-region is marked as the airflow cancellation sub-region, and the airflow monitoring spatial point is marked as the gas cancellation monitoring point.

[0030] As a further aspect of the present invention, the process for determining the overlapping sub-region of airflow cancellation is as follows:

[0031] The airflow offset sub-regions and airflow stagnation sub-regions within the furnace monitoring area are compared for regional overlap. If the airflow offset sub-regions and airflow stagnation sub-regions within the furnace monitoring area overlap one-to-one, they are marked as airflow offset and stagnation overlapping sub-regions.

[0032] As a further aspect of the present invention, the gas flow direction adjustment analysis is performed on the gas cancellation monitoring points within the gas cancellation stagnation overlapping region, as follows:

[0033] Extract the gas flow direction angle corresponding to each quadrant interval on the flow direction angle coordinate system of the gas offset monitoring point, and take the gas flow direction angle in the gas flow direction angle analysis group as the target flow direction angle.

[0034] Extract the gas flow direction angle of the target flow direction angle in the diagonal quadrant of the flow direction angle coordinate system, and use it as the diagonal quadrant flow direction angle. Count the number of diagonal quadrant flow direction angles and the proportion of the total number of gas flow direction angles in the flow direction angle coordinate system, and use it as the diagonal quadrant flow direction number ratio.

[0035] Extract the gas flow direction angle of the target flow direction angle in the diagonal quadrant of the flow direction angle coordinate system, and use it as the diagonal quadrant flow direction angle. Then, obtain the angle difference between the target flow direction angle and the flow direction angle of each diagonal quadrant, and calculate the ratio with the interval range value corresponding to the quadrant interval as the target neighbor angle difference. Calculate the standard deviation of all target neighbor angle differences to obtain the diagonal quadrant flow direction distribution value.

[0036] As a further aspect of the present invention, the process for determining the gas flow direction adjustment angle is as follows:

[0037] The ratio of the number of flow directions in adjacent diagonal quadrants to the ratio of the flow direction distribution value in diagonal quadrants is used to obtain the value of the adjustment angle selection;

[0038] The target flow direction angle is compared with the selected adjustment angle values, and the target flow direction angle corresponding to the largest selected adjustment angle value is selected as the gas flow direction adjustment angle.

[0039] The beneficial effects of this invention are as follows:

[0040] 1. This invention, during the process of introducing inert gas into the ingot in an annealing furnace from multiple different directions, sets a furnace airflow monitoring cycle. Within this cycle, the airflow in each sub-region of the furnace monitoring area is monitored for stagnation, and stagnant sub-regions are identified. Furthermore, within the same monitoring cycle, airflow cancellation analysis is performed on these sub-regions to identify cancellation sub-regions. These cancellation sub-regions are then compared with the stagnant sub-regions to determine the cause of their formation. This clarifies that the stagnant sub-regions are caused by the mutual cancellation of inert gas from different directions. This invention can specifically reduce airflow cancellation, resulting in a more uniform airflow distribution within the furnace, providing a stable gas environment for the modification process, improving the uniformity of ingot quality, and providing more stable raw materials for the subsequent preparation of high-strength, high-conductivity copper leads.

[0041] 2. This invention analyzes the gas flow direction adjustment of the gas offset monitoring points in the gas offset stagnation and overlap zone, determines the gas flow direction adjustment angle, and can change the flow direction of the inert gas, so that it forms a more reasonable airflow path in the furnace. The airflows that originally offset each other can flow along the new direction after adjustment, reducing the collision and turbulence between airflows, helping to eliminate the dead zone of airflow in the furnace, avoiding the problem of uneven ingot annealing due to insufficient local airflow, and also avoiding the phenomenon of offsetting with other gas flow directions after the gas angle is adjusted. Attached Figure Description

[0042] The invention will now be further described with reference to the accompanying drawings.

[0043] Figure 1 This is a functional block diagram of a method for controlling the degradation treatment in the preparation of high-strength, high-conductivity copper leads according to the present invention.

[0044] Figure 2 This is a flowchart illustrating the judgment process of the modification treatment control method in the preparation of high-strength, high-conductivity copper leads according to the present invention. Detailed Implementation

[0045] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0046] Example 1

[0047] The manufacturing process of a high-strength, high-conductivity copper lead wire includes: a raw material purification stage, a melting and casting stage, a plastic processing stage, and a heat treatment stage;

[0048] S1, Raw material purification stage: High-purity electrolytic copper is used to cut, dry (remove surface moisture to prevent bubbles from forming during smelting), and degrease (clean surface oil stains to avoid contamination). Dissolved oxygen in the raw material can be removed by "vacuum degassing" or "inert gas protection".

[0049] S2, Melting and Casting Stage: Vacuum induction furnace or argon-protected melting furnace is commonly used to control the melting temperature at 1100℃ and the holding time at 30min to ensure that the alloying elements are completely melted, impurities float to the surface and are removed. After casting by continuous casting or semi-continuous casting, the mixture is cooled to remove the uneven composition and the surface is polished (to remove oxide scale or burrs).

[0050] S3, Plastic processing stage: Homogenization annealing of the ingot (temperature at 800℃, holding time for 2 hours) to eliminate casting stress, improve compositional uniformity, and reduce the risk of cracking in subsequent processing;

[0051] S4, Heat treatment stage: Through solution treatment, the temperature is raised to 950℃ and held for 1 hour to allow the alloying elements to be completely dissolved in the copper matrix. Then, aging treatment is performed to precipitate the second phase particles in the solid solution and to improve the strength by using dispersion strengthening. The coarse precipitated second phase particles are avoided from affecting the conductivity. Afterward, stress relief annealing is used to eliminate the residual stress generated by plastic processing.

[0052] Example 2

[0053] During the plastic processing stage, when homogenizing the ingot during annealing, inert gas needs to be introduced into the furnace from multiple directions to replace residual air. However, due to the mutual cancellation of inert gas from different directions, airflow stagnation zones occur within the furnace, resulting in uneven annealing of the ingot and failure to completely eliminate casting stress. Figure 1 - Figure 2 As shown in the embodiment of the present invention, a method for controlling the degradation treatment in the fabrication of high-strength, high-conductivity copper leads includes the following steps:

[0054] Step 1: During the process of introducing inert gas into the ingot in the annealing furnace from multiple different directions, a furnace airflow monitoring cycle is set. During the furnace airflow monitoring cycle, the airflow in each airflow monitoring sub-zone divided within the furnace monitoring area is monitored for stagnation, and the airflow stagnation sub-zone is screened out.

[0055] In some embodiments, the furnace monitoring area is divided into several airflow monitoring sub-areas using a grid method, wherein each airflow monitoring sub-area has an equal area and the airflow monitoring sub-area is a regular shape, which can be a square or a rectangle.

[0056] It should be noted that the annealing furnace can be a horizontal straight-through annealing furnace;

[0057] The furnace airflow monitoring cycle is divided into several airflow monitoring nodes, with the interval between two adjacent airflow monitoring nodes being equal in length.

[0058] For example, if we take oxygen as the gas flow inside the furnace, we select the edge vertex and the center point of the gas flow monitoring sub-region as the gas flow monitoring spatial points respectively.

[0059] The oxygen concentration at each airflow monitoring point at each airflow monitoring node is obtained, and the average value of the summation is calculated to obtain the average oxygen concentration at each node.

[0060] The oxygen concentration monitoring value is obtained by summing the average oxygen concentration values ​​of all airflow monitoring nodes.

[0061] The oxygen concentration difference between adjacent nodes is obtained by subtracting the average oxygen concentration of adjacent airflow monitoring nodes and taking the absolute value. The oxygen concentration change is obtained by summing and averaging all the oxygen concentration differences between adjacent nodes.

[0062] The airflow stagnation screening value is obtained by calculating the ratio of the oxygen concentration monitoring value to the oxygen concentration change value.

[0063] It is understandable that the meaning of the airflow retention screening value is: to comprehensively reflect the overall concentration level and concentration change of the airflow in the furnace within a specific monitoring area and period. On the one hand, the oxygen concentration monitoring value reflects the average level of oxygen concentration in the monitoring area of ​​the furnace during the entire airflow monitoring period. On the other hand, the oxygen concentration change value reflects the concentration of oxygen in the furnace over time during the entire monitoring period.

[0064] If the airflow retention screening value is greater than or equal to the airflow retention screening threshold, it indicates that the average concentration of the analyzed airflow monitoring sub-region is high during the furnace airflow monitoring cycle and the concentration change difference is small, which is displayed as an airflow retention signal. The airflow monitoring sub-region that displays the airflow retention signal is marked as an airflow retention sub-region.

[0065] If the airflow retention screening value is less than the airflow retention screening threshold, it indicates that the average concentration of the analyzed airflow monitoring sub-area is low during the furnace airflow monitoring cycle and the concentration variation is large, which is displayed as an airflow non-retention signal.

[0066] The purpose of obtaining the gas flow retention sub-region is: in terms of the uniformity of copper lead performance, the gas flow retention region will cause uneven annealing of the ingot, making it impossible to completely eliminate casting stress. After determining the gas flow retention sub-region, the contact between residual air in the furnace and the ingot can be reduced by controlling and adjusting the inert gas introduction operation, thereby reducing the probability of ingot defects.

[0067] After accurately identifying the airflow stagnation sub-region and optimizing the process, repeated processing and rework caused by uneven annealing can be avoided, reducing waiting time and unnecessary operation steps in the production process, thereby shortening the entire production cycle of high-strength and high-conductivity copper leads and improving production efficiency.

[0068] Step 2: During the furnace airflow monitoring cycle, perform airflow cancellation analysis on the airflow monitoring sub-areas divided within the furnace monitoring area, screen out the airflow cancellation sub-areas, and compare them with the airflow stagnation sub-areas to determine the airflow cancellation and stagnation overlapping sub-areas.

[0069] In some embodiments, airflow monitoring spatial points within the airflow monitoring sub-region are extracted, and the gas flow direction angle at each airflow monitoring spatial point is obtained;

[0070] Using the airflow monitoring spatial point as the origin, a flow direction angle coordinate system is constructed. The first quadrant interval within the flow direction angle coordinate system is 0º~90º, the second quadrant interval is 90º~180º, the third quadrant interval is 180º~270º, and the fourth quadrant interval is 270º~360º.

[0071] It should be noted that the gas flow direction angle refers to the angle formed with the X-axis on the flow direction angle coordinate system;

[0072] By combining two gas flow direction angles that are located in any quadrant of the flow direction angle coordinate system, multiple sets of gas flow direction angle analysis groups are obtained.

[0073] If the two gas flow angles in the gas flow angle analysis group are on the same straight line, it means that the inert gases of the two gas flow angles cancel each other out, and it is marked as a flow cancellation group.

[0074] If the two gas flow angles in the gas flow angle analysis group are not on the same straight line, it means that the inert gases of the two gas flow angles do not cancel each other out, and it is marked as the flow non-cancellation group.

[0075] The proportion of the number of flow direction offset groups to the total number of gas flow direction angle analysis groups is used as the flow direction offset ratio.

[0076] Within the flow direction cancellation group, the gas flow velocity at two gas flow direction angles is obtained respectively. After the difference is taken and the absolute value is calculated, the ratio is calculated with the gas flow velocity threshold to obtain the flow direction cancellation velocity difference ratio. The flow direction cancellation velocity difference ratio of each flow direction cancellation group is summed and the average value is calculated to obtain the flow direction cancellation degree value.

[0077] The airflow cancellation ratio and the airflow cancellation degree value are summed to obtain the airflow cancellation analysis value;

[0078] It is understandable that the meaning of the airflow cancellation analysis value is: it comprehensively reflects the mutual cancellation of inert gases in different directions in the airflow monitoring sub-zone of the furnace. It quantifies the airflow cancellation phenomenon from two key dimensions: the frequency of cancellation and the intensity of cancellation. On the one hand, the frequency of mutual cancellation of inert gases in different directions in the furnace is reflected by the ratio of the number of cancellations in different directions. On the other hand, the intensity of airflow cancellation is reflected by the degree of cancellation in different directions.

[0079] If the airflow cancellation analysis value is greater than the airflow cancellation analysis threshold, it indicates that within the airflow monitoring cycle in the furnace, the inert gases at the airflow monitoring space points in the analyzed airflow monitoring sub-region cancel each other out to a greater degree and at a higher frequency. The airflow monitoring sub-region is then marked as the airflow cancellation sub-region, and the airflow monitoring space points are marked as gas cancellation monitoring points.

[0080] If the airflow cancellation analysis value is less than or equal to the airflow cancellation analysis threshold, it indicates that the degree of mutual cancellation of inert gases at the airflow monitoring points in the analyzed airflow monitoring sub-region is small and the frequency is low during the airflow monitoring cycle in the furnace. The airflow monitoring sub-region is then marked as a non-airflow cancellation sub-region.

[0081] The airflow cancellation sub-region and the airflow stagnation sub-region within the furnace monitoring area are compared for regional overlap. If the airflow cancellation sub-region and the airflow stagnation sub-region within the furnace monitoring area overlap one-to-one, they are marked as airflow cancellation and stagnation overlapping sub-regions.

[0082] If there is a mismatch between the airflow offset sub-region and the airflow stagnation sub-region in the monitoring area inside the furnace, analyze whether the airflow stagnation sub-region is caused by other reasons.

[0083] It should be noted that the purpose of determining the cause of the gas flow stagnation sub-region is to clarify that the gas flow stagnation sub-region is caused by the mutual cancellation of inert gases from different directions. This allows for targeted adjustment of the parameters of inert gases introduced from multiple directions, reducing the gas flow cancellation phenomenon, making the gas flow distribution in the furnace uniform, providing a stable gas environment for the modification treatment, effectively reducing gas flow stagnation, and ensuring that all parts of the ingot are subjected to uniform action during the modification treatment process. This improves the uniformity of ingot quality and provides more stable raw materials for the subsequent preparation of high-strength, high-conductivity copper leads.

[0084] The specific scheme of this embodiment is as follows: During the process of introducing inert gas into the ingot in the annealing furnace from multiple different directions, a furnace airflow monitoring cycle is set. During the furnace airflow monitoring cycle, the airflow in each airflow monitoring sub-zone divided within the furnace monitoring area is monitored for stagnation, and stagnant airflow sub-zones are screened out. During the furnace airflow monitoring cycle, airflow cancellation analysis is performed on the airflow monitoring sub-zones divided within the furnace monitoring area, and airflow cancellation sub-zones are screened out. Spatial overlap comparison is performed with the stagnant airflow sub-zones to determine the cause of the stagnant airflow sub-zones. It is clarified that the stagnant airflow sub-zones are caused by the mutual cancellation of inert gas from different directions. This can specifically reduce the airflow cancellation phenomenon, make the airflow distribution in the furnace uniform, provide a stable gas environment for the modification treatment, improve the uniformity of ingot quality, and provide more stable raw materials for the subsequent preparation of high-strength and high-conductivity copper leads.

[0085] Example 3

[0086] like Figure 1 - Figure 2 As shown in the embodiment of the present invention, a method for controlling the degradation treatment in the preparation of high-strength, high-conductivity copper leads further includes the following steps:

[0087] Step 3: If the cause of the airflow stagnation sub-region is inert gas cancellation, then perform gas flow direction adjustment analysis on the gas cancellation monitoring points in the airflow cancellation stagnation overlapping sub-region to determine the gas flow direction adjustment angle.

[0088] In some embodiments, the gas flow direction angle corresponding to the gas offset monitoring point is extracted in each quadrant interval of the flow direction angle coordinate system, and the gas flow direction angle in the gas flow direction angle analysis group is used as the target flow direction angle.

[0089] Extract the gas flow direction angle of the target flow direction angle in the diagonal quadrant of the flow direction angle coordinate system, and use it as the diagonal quadrant flow direction angle. Count the number of diagonal quadrant flow direction angles and the proportion of the total number of gas flow direction angles in the flow direction angle coordinate system, and use it as the diagonal quadrant flow direction number ratio.

[0090] Extract the gas flow direction angle of the target flow direction angle in the diagonal quadrant of the flow direction angle coordinate system, and use it as the diagonal quadrant flow direction angle. Then, obtain the angle difference between the target flow direction angle and the flow direction angle of each diagonal quadrant, and calculate the ratio with the interval range value (90º) corresponding to the quadrant interval, and use it as the target neighbor angle difference.

[0091] The standard deviation of the angle differences between all targets is calculated to obtain the diagonal quadrant flow direction distribution value;

[0092] The ratio of the number of flow directions in adjacent diagonal quadrants to the ratio of the flow direction distribution value in diagonal quadrants is used to obtain the value of the adjustment angle selection;

[0093] It is understandable that the meaning of the selected adjustment angle is: by combining the "mainstream potential" and the "stability reliability value" through ratio calculation, a priority ranking basis is provided for selecting the gas flow direction adjustment angle. On the one hand, the ratio of the number of flow directions in the adjacent diagonal quadrants reflects the quantity of adjacent gas flow direction angles in the flow direction angle coordinate system of the target flow direction angle. On the other hand, the distribution value of the flow direction in the diagonal quadrants reflects the stability of adjacent gas flow direction angles in the flow direction angle coordinate system of the target flow direction angle.

[0094] Compare the selected adjustment angle values ​​corresponding to the target flow direction angle, and select the target flow direction angle corresponding to the largest selected adjustment angle value as the gas flow direction adjustment angle.

[0095] It should be noted that the purpose of adjusting the gas flow direction is to change the flow direction of the inert gas from the perspective of optimizing the airflow path, so that it can form a more reasonable airflow path in the furnace. The airflow that originally canceled each other can flow along the new direction after adjustment, reducing the collision and turbulence between airflows, making the airflow distribution uniform, and expanding the coverage of the inert gas in the furnace, ensuring that all parts of the ingot can fully contact the inert gas, which helps to eliminate the dead airflow in the furnace and avoid the problem of uneven annealing of the ingot due to insufficient local airflow.

[0096] From the perspective of ingot quality, by determining the gas flow direction and adjusting the angle, the gas flow cancellation phenomenon can be reduced, so that each part of the ingot is subjected to uniform action during the annealing process, improving the annealing uniformity, reducing the probability of ingot defects, providing a stable gas environment for the ingot, and also avoiding the cancellation phenomenon between other gas flows after the gas angle is adjusted.

[0097] The specific solution in this embodiment is as follows: gas flow direction adjustment analysis is performed on the gas cancellation monitoring points in the gas cancellation stagnation area to determine the gas flow direction adjustment angle. This can change the flow direction of the inert gas, so that it forms a more reasonable airflow path in the furnace. The airflows that originally canceled each other can flow along the new direction after adjustment, reducing the collision and turbulence between airflows. This helps to eliminate the dead zone of airflow in the furnace, avoid the problem of uneven ingot annealing caused by insufficient local airflow, and also avoid the phenomenon of cancellation with other gas flow directions after the gas angle is adjusted.

[0098] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the present invention should still fall within the scope of the present invention.

Claims

1. A method for controlling degradation treatment in the fabrication of high-strength, high-conductivity copper leads, characterized in that: During the process of introducing inert gas into the ingot in the annealing furnace from multiple different directions, a furnace airflow monitoring cycle is set. During the furnace airflow monitoring cycle, the airflow in each airflow monitoring sub-zone divided within the furnace monitoring area is monitored for stagnation, and the airflow stagnation sub-zone is screened out. During the furnace airflow monitoring cycle, airflow cancellation analysis is performed on the airflow monitoring sub-areas divided within the furnace monitoring area. Airflow cancellation sub-areas are screened out and spatially overlapped with airflow stagnation sub-areas to determine the overlapping airflow cancellation and stagnation sub-areas. If the cause of the airflow stagnation sub-region is inert gas offset, then a flow direction angle coordinate system is constructed. Based on the number of adjacent flow offsets and the distribution dimension of adjacent flow offsets, the gas flow direction adjustment analysis is performed on the gas offset monitoring points in the overlapping sub-region of airflow offset stagnation, and the gas flow direction adjustment angle is determined.

2. The method for controlling degradation treatment in the fabrication of high-strength, high-conductivity copper leads according to claim 1, characterized in that: The process of stagnation monitoring of airflow within each airflow monitoring sub-zone of the furnace monitoring area is as follows: The furnace airflow monitoring cycle is divided into several airflow monitoring nodes, and the edge vertex and center point of the airflow monitoring sub-region are selected as the airflow monitoring spatial points respectively. The oxygen concentration at each airflow monitoring point at each airflow monitoring node is obtained, and the average value of the summation is calculated to obtain the average oxygen concentration at each node. The oxygen concentration monitoring value is obtained by summing the average oxygen concentration values ​​of all airflow monitoring nodes. The oxygen concentration difference between adjacent nodes is obtained by subtracting the mean oxygen concentration of adjacent nodes and taking the absolute value. The oxygen concentration change is obtained by summing and averaging the oxygen concentration differences of all adjacent nodes.

3. The method for controlling degradation treatment in the fabrication of high-strength, high-conductivity copper leads according to claim 2, characterized in that: The process for selecting airflow stagnation sub-regions is as follows: The airflow stagnation screening value is obtained by calculating the ratio of the oxygen concentration monitoring value to the oxygen concentration change value. If the airflow stagnation screening value is greater than or equal to the airflow stagnation screening threshold, it will be displayed as an airflow stagnation signal, and the airflow monitoring sub-area that displays the airflow stagnation signal will be marked as an airflow stagnation sub-area.

4. The method for controlling degradation treatment in the fabrication of high-strength, high-conductivity copper leads according to claim 1, characterized in that: The process of constructing the flow direction angular coordinate system is as follows: Extract airflow monitoring spatial points within the airflow monitoring sub-region and obtain the gas flow direction angle at each airflow monitoring spatial point. Construct a flow direction angle coordinate system with the airflow monitoring spatial point as the origin. The first quadrant interval of the flow direction angle coordinate system is 0º~90º, the second quadrant interval is 90º~180º, the third quadrant interval is 180º~270º, and the fourth quadrant interval is 270º~360º.

5. The method for controlling degradation treatment in the fabrication of high-strength, high-conductivity copper leads according to claim 4, characterized in that: The process of performing airflow cancellation analysis on the airflow monitoring sub-regions divided within the furnace monitoring area based on the dimension of adjacent flow direction cancellation is as follows: By combining two gas flow direction angles that are located in any quadrant of the flow direction angle coordinate system, multiple sets of gas flow direction angle analysis groups are obtained. If the two gas flow angles in the gas flow angle analysis group are on the same straight line, it means that the inert gases of the two gas flow angles cancel each other out, and it is marked as a flow cancellation group. The proportion of the number of flow direction offset groups to the total number of gas flow direction angle analysis groups is used as the flow direction offset ratio.

6. The method for controlling degradation treatment in the fabrication of high-strength, high-conductivity copper leads according to claim 5, characterized in that: The process of performing airflow cancellation analysis on the airflow monitoring sub-regions within the furnace monitoring area based on the adjacent flow direction cancellation distribution dimension is as follows: Within the flow direction cancellation group, the gas flow velocity at two gas flow direction angles is obtained respectively. After the difference is taken and the absolute value is calculated, the ratio is calculated with the gas flow velocity threshold to obtain the flow direction cancellation velocity difference ratio. The flow direction cancellation velocity difference ratio of each flow direction cancellation group is summed and the average value is calculated to obtain the flow direction cancellation degree value.

7. The method for controlling degradation treatment in the fabrication of high-strength, high-conductivity copper leads according to claim 1, characterized in that: The process of selecting the airflow offset sub-region is as follows: The airflow cancellation ratio and the airflow cancellation degree value are summed to obtain the airflow cancellation analysis value; If the airflow cancellation analysis value is greater than the airflow cancellation analysis threshold, the airflow monitoring sub-region is marked as the airflow cancellation sub-region, and the airflow monitoring spatial point is marked as the gas cancellation monitoring point.

8. The method for controlling the degradation treatment in the fabrication of high-strength, high-conductivity copper leads according to claim 7, characterized in that: The process of determining the overlapping sub-region of airflow cancellation is as follows: The airflow offset sub-regions and airflow stagnation sub-regions within the furnace monitoring area are compared for regional overlap. If the airflow offset sub-regions and airflow stagnation sub-regions within the furnace monitoring area overlap one-to-one, they are marked as airflow offset and stagnation overlapping sub-regions.

9. The method for controlling degradation treatment in the fabrication of high-strength, high-conductivity copper leads according to claim 1, characterized in that: The gas flow direction adjustment analysis was performed on the gas cancellation monitoring points within the gas cancellation stagnation region of the overlapping sub-region. The process is as follows: Extract the gas flow direction angle corresponding to each quadrant interval on the flow direction angle coordinate system of the gas offset monitoring point, and take the gas flow direction angle in the gas flow direction angle analysis group as the target flow direction angle. Extract the gas flow direction angle of the target flow direction angle in the diagonal quadrant of the flow direction angle coordinate system, and use it as the diagonal quadrant flow direction angle. Count the number of diagonal quadrant flow direction angles and the proportion of the total number of gas flow direction angles in the flow direction angle coordinate system, and use it as the diagonal quadrant flow direction number ratio. Extract the gas flow direction angle of the target flow direction angle in the diagonal quadrant of the flow direction angle coordinate system, and use it as the diagonal quadrant flow direction angle. Then, obtain the angle difference between the target flow direction angle and the flow direction angle of each diagonal quadrant, and calculate the ratio with the interval range value corresponding to the quadrant interval as the target neighbor angle difference. Calculate the standard deviation of all target neighbor angle differences to obtain the diagonal quadrant flow direction distribution value.

10. The method for controlling degradation treatment in the fabrication of high-strength, high-conductivity copper leads according to claim 1, characterized in that: The process for determining the gas flow direction adjustment angle is as follows: The ratio of the number of flow directions in adjacent diagonal quadrants to the ratio of the flow direction distribution value in diagonal quadrants is used to obtain the value of the adjustment angle selection; The target flow direction angle is compared with the selected adjustment angle values, and the target flow direction angle corresponding to the largest selected adjustment angle value is selected as the gas flow direction adjustment angle.

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