Copper wire beneficial to improving surface quality and processing technology thereof

Abstract

The invention relates to the field of copper material processing, and discloses a copper wire beneficial for improving surface quality, the copper wire comprises the following raw materials: 97 parts of copper, 2 parts of aluminum, 0.4 part of phosphorus, 0.3 part of zinc and 0.3 part of nickel, and the method comprises the following steps: S1, carrying out impurity screening on the 97 parts of copper, 2 parts of aluminum, 0.4 part of phosphorus, 0.3 part of zinc and 0.3 part of nickel, and then pouring into a smelting furnace for smelting; s2, the smelted raw materials are poured into a casting mold, and a copper ingot is obtained; and S3, cooling water is injected into the cast copper ingot. According to the copper wire beneficial to improving the surface quality and the processing technology of the copper wire, oxygen, sulfur and hydrogen related processing technologies used in a conventional copper wire are eliminated, high-melting-point brittle compounds generated in the initial processing process of copper raw materials are avoided, and meanwhile the surface quality of the copper wire can be improved through a formula for measuring and calculating the speeds of different wire diameters in the wire drawing stage. And the overall wire drawing speed is adjusted in good time, so that the copper wire can also include the influence of real-time environmental factors in the wire drawing stage of the subsequent process.

Description

Technical Field

[0001] The invention relates to the field of copper material processing, in particular to a copper wire which is beneficial to improving surface quality and a processing technology thereof. Background Art

[0002] Copper processing is an important part of my country's nonferrous metal industry. After years of rapid development, my country has become the world's largest copper producer and consumer, with its comprehensive strength significantly enhanced. The copper processing industry is an intermediate link in the copper industry chain and an important sector of the national economy. Copper processing products can be divided into pure copper and copper alloy products according to their copper content. Among them, the demand for copper wire has greatly increased with the rapid development of real estate and the construction of my country's power infrastructure.

[0003] During the manufacturing process of copper wire, the quality of the wire surface is directly affected by the quality of the copper wire. The neck of the copper wire with surface defects will cause the grains and contaminants on the copper wire surface to fall off after repeated large plastic deformation, resulting in short circuit and ball neck fracture. Large contact stress will cause the aluminum layer to overflow. Excessive ultrasonic power will cause serious deformation of the bonding area to produce obvious cracks and cause serious stress concentration in the bonding area, resulting in microcracks during the use of the device and reducing the service life of the device. Therefore, a processing technology that improves the surface quality of copper wire is urgently needed to solve the above problems. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the present invention provides a copper wire and a processing technology thereof that are beneficial to improving the surface quality, and has the advantages of smooth surface quality of the copper wire, thereby solving the problems in the above-mentioned background technology.

[0006] (II) Technical solution

[0007] In order to achieve the purpose of smooth surface quality of the copper wire, the present invention provides the following technical solution: a copper wire that is beneficial to improving surface quality, comprising the following raw materials: 97 parts of copper, 2 parts of aluminum, 0.4 parts of phosphorus, 0.3 parts of zinc and 0.3 parts of nickel.

[0008] Preferably, the method comprises the following steps:

[0009] S1: 97 parts of copper, 2 parts of aluminum, 0.4 parts of phosphorus, 0.3 parts of zinc and 0.3 parts of nickel are poured into a furnace for smelting after impurities are separated;

[0010] S2: pouring the smelted raw materials into a casting mold to obtain a copper ingot;

[0011] S3: Cooling water is injected into the copper ingot after casting;

[0012] S4: The cooled copper ingot is placed into a continuous casting machine for continuous casting;

[0013] S5: The semi-finished product after continuous casting is subjected to rounding treatment;

[0014] S6: placing the copper column obtained by rolling into a wire drawing machine for wire drawing crystallization treatment;

[0015] S7: perform the following steps on the copper wire obtained after wire drawing.

[0016] Preferably, in step S2, the pouring speed of the raw materials after smelting is not greater than 50 mm / min.

[0017] Preferably, in step S3, the temperature of the cooling water is controlled at 15°C-20°C, and the cooling water injection rate is not greater than 200L / h.

[0018] Preferably, the wire drawing speed in step 2 is expressed by the following formula:

[0019]

[0020] in:

[0021] V represents the drawing speed;

[0022] w represents temperature;

[0023] Δr represents the difference between the initial radius and the final radius;

[0024] u represents the heating rate;

[0025] L represents the drawing length;

[0026] n represents the viscosity of the lubricating oil;

[0027] μ represents the adjustment coefficient.

[0028] Preferably, the lubricating oil viscosity is calculated by the following formula:

[0029]

[0030] in:

[0031] n represents the viscosity of the lubricating oil;

[0032] k represents a constant;

[0033] m represents the friction coefficient of the lubricant used.

[0034] (III) Beneficial effects

[0035] Compared with the prior art, the present invention provides a copper wire and a processing technology thereof which are beneficial to improving the surface quality, and has the following beneficial effects:

[0036] The copper wire and its processing technology, which are beneficial to improving the surface quality, avoid the high-melting-point brittle compounds produced during the initial processing of the copper raw materials by eliminating the processing technology related to oxygen, sulfur and hydrogen used in the conventional copper wire, thereby improving the overall plasticity of the copper wire. At the same time, by using the speed measurement formula between different wire diameters in the wire drawing stage, the overall wire drawing speed is adjusted in time, so that the copper wire can also include the influence of real-time environmental factors in the wire drawing stage of the subsequent process, and the wire drawing machine is comprehensively considered and controlled. Factors affecting the surface quality of the copper wire in the wire drawing stage during the manufacturing process are effectively improved. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Example 1

[0039] A preferred embodiment of a copper wire and a processing technology thereof that are beneficial to improving surface quality provided by the present invention is as follows: A copper wire that is beneficial to improving surface quality comprises the following raw materials: 97 parts of copper, 2 parts of aluminum, 0.4 parts of phosphorus, 0.3 parts of zinc and 0.3 parts of nickel.

[0040] In this embodiment, the following steps are included:

[0041] S1: 97 parts of copper, 2 parts of aluminum, 0.4 parts of phosphorus, 0.3 parts of zinc and 0.3 parts of nickel are poured into a furnace for smelting after impurities are separated;

[0042] S2: pouring the smelted raw materials into a casting mold to obtain a copper ingot;

[0043] S3: Cooling water is injected into the copper ingot after casting;

[0044] S4: The cooled copper ingot is placed into a continuous casting machine for continuous casting;

[0045] S5: The semi-finished product after continuous casting is subjected to rounding treatment;

[0046] S6: placing the copper column obtained by rolling into a wire drawing machine for wire drawing crystallization treatment;

[0047] S7: perform the following steps on the copper wire obtained after wire drawing.

[0048] Example 2

[0049] On the basis of Example 1, a preferred embodiment of a copper wire and its processing technology that are beneficial to improving the surface quality provided by the present invention is as follows: In step S2, the pouring speed of the raw material after smelting is not more than 50 mm / min. The control of the pouring speed of the raw material after smelting can control the generation of subsequent bubbles during the pouring process, thereby preventing the occurrence of excessive bubbles in the copper ingot after subsequent forming.

[0050] In this embodiment, the temperature of the cooling water in step S3 is controlled at 15° C.-20° C., and the cooling water injection rate is no more than 200 L / h.

[0051] Furthermore, the drawing speed in step 2 is expressed by the following formula:

[0052]

[0053] in:

[0054] V represents the drawing speed;

[0055] w represents temperature;

[0056] Δr represents the difference between the initial radius and the final radius;

[0057] u represents the heating rate;

[0058] L represents the drawing length;

[0059] n represents the viscosity of the lubricating oil;

[0060] μ represents the adjustment coefficient.

[0061] By taking into account the environmental changes brought about by the various factors in the formula during the wire drawing process, the wire drawing speed of the wire drawing machine can be controlled within an excellent range, thus preventing the surface quality defects of the copper wire after drawing caused by the heat generated by the copper wire during the wire drawing process and the change in the viscosity of the lubricating oil.

[0062] Furthermore, the lubricating oil viscosity is calculated by the following formula:

[0063]

[0064] in:

[0065] n represents the viscosity of the lubricating oil;

[0066] k represents a constant;

[0067] m represents the friction coefficient of the lubricant used.

[0068] Through real-time measurement of lubricating oil viscosity, the heat generated by long-term molecular extrusion of the lubricating oil can be brought into the overall wire drawing process, which effectively improves the stability of the wire drawing work.

[0069] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0070] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A copper wire that is beneficial to improving surface quality, characterized in that: The raw materials include: 97 parts of copper, 2 parts of aluminum, 0.4 parts of phosphorus, 0.3 parts of zinc and 0.3 parts of nickel.

2. The copper wire processing technology that is beneficial to improving the surface quality according to claim 1 is characterized in that: The following steps are involved: S1: 97 parts of copper, 2 parts of aluminum, 0.4 parts of phosphorus, 0.3 parts of zinc and 0.3 parts of nickel are poured into a furnace for smelting after impurities are separated; S2: pouring the smelted raw materials into a casting mold to obtain a copper ingot; S3: Cooling water is injected into the copper ingot after casting; S4: The cooled copper ingot is placed into a continuous casting machine for continuous casting; S5: The semi-finished product after continuous casting is subjected to rounding treatment; S6: placing the copper column obtained by rolling into a wire drawing machine for wire drawing crystallization treatment; S7: perform the following steps on the copper wire obtained after wire drawing.

3. The copper wire and processing technology thereof that are beneficial to improving surface quality according to claim 2 are characterized in that: In the step S2, the pouring speed of the raw materials after smelting is not greater than 50 mm / min.

4. The copper wire and processing technology thereof that are beneficial to improving surface quality according to claim 2 are characterized in that: In step S3, the temperature of the cooling water is controlled at 15°C-20°C, and the cooling water injection rate is not greater than 200L / h.

5. The copper wire and processing technology thereof that are beneficial to improving surface quality according to claim 2, characterized in that: The drawing speed in step 2 is expressed by the following formula: in: V represents the drawing speed; w represents temperature; Δr represents the difference between the initial radius and the final radius; u represents the heating rate; L represents the drawing length; n represents the viscosity of the lubricating oil; μ represents the adjustment coefficient.

6. The copper wire and processing technology thereof that are beneficial to improving surface quality according to claim 5, characterized in that: The lubricating oil viscosity is calculated by the following formula: in: n represents the viscosity of the lubricating oil; k represents a constant; m represents the friction coefficient of the lubricant used.

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