阅读说明：本技术 一种高强高导高纯铜线的加工工艺 (Processing technology of high-strength high-conductivity high-purity copper wire ) 是由 韦建敏 张晓蓓 张小波 刘正斌 于 2021-09-08 设计创作，主要内容包括：本发明公开了一种高强高导高纯铜线的加工工艺,它包括以下步骤：(1)以阴极电解铜为原料,去除原料表面污物；(2)将原料预热至110-150℃,并保温0.5-2h；(3)熔炼；(4)上引连铸炉、结晶；(5)连续挤压；(6)铜杆结晶退火、连轧；(7)线坯结晶退火；(8)线坯再次结晶退火；(9)拉拔,获得铜线,即为高强高导高纯铜线。本发明提供的高强高导高纯铜线的加工工艺制备出的高强高导高纯铜线,具有抗拉强度高、高电导率的优势。(The invention discloses a processing technology of a high-strength high-conductivity high-purity copper wire, which comprises the following steps: (1) using cathode electrolytic copper as a raw material to remove dirt on the surface of the raw material; (2) preheating the raw materials to 110-150 ℃, and preserving heat for 0.5-2 h; (3) smelting; (4) drawing up a continuous casting furnace and crystallizing; (5) continuous extrusion; (6) crystallizing, annealing and continuously rolling the copper rod; (7) crystallizing and annealing the wire blank; (8) recrystallizing and annealing the wire blank; (9) and drawing to obtain the copper wire, namely the high-strength high-conductivity high-purity copper wire. The high-strength high-conductivity high-purity copper wire prepared by the processing technology of the high-strength high-conductivity high-purity copper wire provided by the invention has the advantages of high tensile strength and high conductivity.)

1. A processing technology of a high-strength high-conductivity high-purity copper wire is characterized by comprising the following steps:

(1) using cathode electrolytic copper as a raw material to remove dirt on the surface of the raw material;

(2) preheating the raw materials to 110-150 ℃, and preserving heat for 0.5-2 h;

(3) putting the raw materials into a smelting device for smelting at 1150-1250 ℃, adding a copper refining agent and a covering agent, and smelting in a protective atmosphere to obtain a copper melt;

the copper refining agent comprises the following raw materials in parts by weight: 10-15 parts of copper-phosphorus alloy powder; 15-20 parts of copper-zirconium alloy powder; 8-12 parts of copper-cerium alloy powder; 3-5 parts of copper-titanium alloy powder; 2-5 parts of sodium bicarbonate; 5-10 parts of sodium carbonate; 8-12 parts of sodium chloride; 3-8 parts of sodium fluosilicate; the adding amount of the copper refining agent is 0.5-2% of the weight of the cathode electrolytic copper;

the covering agent is a mixture of wollastonite, calcite, malachite and charcoal, and the mass ratio of the wollastonite to the calcite to the malachite to the charcoal is 5-10: 8-12: 5-10: 65-85 parts of;

(4) transferring the copper melt obtained in the step (3) into an upward continuous casting furnace, adopting charcoal as a covering agent, controlling the pressure of protective gas on the liquid surface of the upward continuous casting furnace to be 0.6-1.2 atmospheric pressure, controlling the water pressure of a crystallizer to be 0.3-0.6MPa, and controlling the water outlet temperature of the crystallizer to be 25-35 ℃ to obtain a copper blank;

(5) continuously extruding the copper blank obtained in the step (4) by using a continuous extruder to obtain a copper rod;

(6) carrying out crystallization annealing on the copper rod obtained in the step (5), heating to 380-450 ℃, preserving heat for 1.5-2.5h, then cooling along with a furnace, continuing continuous rolling, and rolling the copper rod into a wire blank through a continuous rolling unit;

(7) carrying out crystallization annealing on the wire blank continuously rolled in the step (6), heating to 480-550 ℃, preserving heat for 1.5-2.5h, and then cooling along with the furnace;

(8) carrying out crystallization annealing on the wire blank subjected to crystallization annealing in the step (7) again, heating to 580-650 ℃, preserving heat for 1.5-2.5h, and then cooling along with the furnace;

(9) and (4) drawing the wire blank subjected to the recrystallization annealing treatment in the step (8) to obtain a copper wire, namely the high-strength high-conductivity high-purity copper wire.

2. The process for manufacturing a high-strength, high-conductivity and high-purity copper wire according to claim 1, wherein the purity of the cathode electrolytic copper in the step (1) is 99.99% or more.

3. The process for processing the high-strength, high-conductivity and high-purity copper wire as recited in claim 1, wherein in the step (2), the raw material is preheated to 140 ℃ and is kept at the temperature for 1-1.5 h.

4. The process for processing the high-strength, high-conductivity and high-purity copper wire according to claim 1, wherein in the step (3), the copper refining agent comprises the following raw materials in parts by weight: 12-14 parts of copper-phosphorus alloy powder; 16-19 parts of copper-zirconium alloy powder; 9-11 parts of copper-cerium alloy powder; 3-4 parts of copper-titanium alloy powder; 3-4 parts of sodium bicarbonate; 6-9 parts of sodium carbonate; 9-10 parts of sodium chloride; 4-7 parts of sodium fluosilicate; the adding amount of the copper refining agent is 1-1.5% of the weight of the cathode electrolytic copper.

5. The processing technology of the high-strength, high-conductivity and high-purity copper wire according to claim 4, wherein the copper refining agent comprises the following raw materials in parts by weight: 12 parts of copper-phosphorus alloy powder; 18 parts of copper-zirconium alloy powder; 10 parts of copper-cerium alloy powder; 4 parts of copper-titanium alloy powder; 3 parts of sodium bicarbonate; 8 parts of sodium carbonate; 10 parts of sodium chloride; and 5 parts of sodium fluosilicate.

6. The process for processing the high-strength, high-conductivity and high-purity copper wire according to claim 4, wherein the copper refining agent is prepared by uniformly mixing the raw materials according to a ratio, heating to 220-300 ℃, keeping the temperature for 1-2 h, continuing heating to 320-400 ℃, keeping the temperature for 1-2 h, finally coating and pressing the copper wire with copper foil or copper pipe into blocks, and naturally cooling the blocks.

7. The process for processing the high-strength high-conductivity high-purity copper wire according to claim 1, wherein the mass ratio of the wollastonite to the calcite to the malachite to the charcoal is 8: 10: 8: 75.

8. the process for manufacturing a high-strength, high-conductivity and high-purity copper wire according to claim 1, wherein in the step (3), the protective gas used is argon or nitrogen.

9. The process for manufacturing a high-strength, high-conductivity and high-purity copper wire according to claim 1, wherein in the step (4), the protective gas used is argon or nitrogen.

Technical Field

The invention relates to the technical field of material forming and processing, in particular to a processing technology of a high-strength high-conductivity high-purity copper wire.

Background

Pure copper is the copper with the highest copper content as the name suggests, and the mauve is also called mauve copper, the main component is copper and silver, and the content is 99.5-99.95%; main impurity elements: phosphorus, bismuth, antimony, arsenic, iron, nickel, lead, tin, sulfur, zinc, oxygen, etc.; it can be used to make electric conducting material, high-grade copper alloy and copper-base alloy. Pure copper has high electric and thermal conductivity, high plastic deformation capacity and good corrosion resistance, and is widely applied to industry as a good conductor. The applicant finds that the flat-high-strength high-conductivity high-purity copper wire has higher market value and larger development space, and therefore, a research and development team is built to carry out deep research on the high-strength high-conductivity high-purity copper wire.

The applicant has found that, despite the advantage of high electrical conductivity of pure copper, it has a very low tensile strength and is very susceptible to work hardening due to its very low static recrystallization temperature characteristics, thereby inhibiting further plastic deformation. Therefore, pure copper materials are mostly applied to wires, conductors, coolers and the like, and are difficult to meet various application requirements as structural materials. The pure copper produced by the traditional method and the pure copper produced by powder metallurgy have loose structure, the electrical conductivity and the tensile strength are still low, and the use in some special occasions can not be met.

Disclosure of Invention

The invention aims to provide a processing technology of a high-strength high-conductivity high-purity copper wire, which aims to solve the technical problem that the conductivity and tensile strength of the pure copper wire are low in the prior art.

In order to achieve the purpose, the invention provides the following technical scheme:

the invention provides a processing technology of a high-strength high-conductivity high-purity copper wire, which comprises the following steps:

(1) using cathode electrolytic copper as a raw material to remove dirt on the surface of the raw material;

(2) preheating the raw materials to 110-150 ℃, and preserving heat for 0.5-2 h;

(3) putting the raw materials into a smelting device for smelting at 1150-1250 ℃, adding a copper refining agent and a covering agent, and smelting in a protective atmosphere to obtain a copper melt;

the copper refining agent comprises the following raw materials in parts by weight: 10-15 parts of copper-phosphorus alloy powder; 15-20 parts of copper-zirconium alloy powder; 8-12 parts of copper-cerium alloy powder; 3-5 parts of copper-titanium alloy powder; 2-5 parts of sodium bicarbonate; 5-10 parts of sodium carbonate; 8-12 parts of sodium chloride; 3-8 parts of sodium fluosilicate; the adding amount of the copper refining agent is 0.5-2% of the weight of the cathode electrolytic copper;

the covering agent is a mixture of wollastonite, calcite, malachite and charcoal, and the mass ratio of the wollastonite to the calcite to the malachite to the charcoal is 5-10: 8-12: 5-10: 65-85 parts of;

(4) transferring the copper melt obtained in the step (3) into an upward continuous casting furnace, adopting charcoal as a covering agent, controlling the pressure of protective gas on the liquid surface of the upward continuous casting furnace to be 0.6-1.2 atmospheric pressure, controlling the water pressure of a crystallizer to be 0.3-0.6MPa, and controlling the water outlet temperature of the crystallizer to be 25-35 ℃ to obtain a copper blank;

(5) continuously extruding the copper blank obtained in the step (4) by using a continuous extruder to obtain a copper rod;

(6) carrying out crystallization annealing on the copper rod obtained in the step (5), heating to 380-450 ℃, preserving heat for 1.5-2.5h, then cooling along with a furnace, continuing continuous rolling, and rolling the copper rod into a wire blank through a continuous rolling unit;

(7) carrying out crystallization annealing on the wire blank continuously rolled in the step (6), heating to 480-550 ℃, preserving heat for 1.5-2.5h, and then cooling along with the furnace;

(8) carrying out crystallization annealing on the wire blank subjected to crystallization annealing in the step (7) again, heating to 580-650 ℃, preserving heat for 1.5-2.5h, and then cooling along with the furnace;

(9) and (5) drawing the wire blank subjected to the recrystallization annealing treatment in the step (8) by a drawing machine set to obtain a copper wire, namely the high-strength high-conductivity high-purity copper wire.

Further, in the step (1), the purity of the cathode electrolytic copper is 99.99% or more.

Further, in the step (2), the raw material is preheated to 140 ℃ and is kept at the temperature for 1-1.5 h.

Further, in the step (3), the copper refining agent comprises the following raw materials in parts by weight: 12-14 parts of copper-phosphorus alloy powder; 16-19 parts of copper-zirconium alloy powder; 9-11 parts of copper-cerium alloy powder; 3-4 parts of copper-titanium alloy powder; 3-4 parts of sodium bicarbonate; 6-9 parts of sodium carbonate; 9-10 parts of sodium chloride; 4-7 parts of sodium fluosilicate; the adding amount of the copper refining agent is 1-1.5% of the weight of the cathode electrolytic copper.

Further, in the copper refining agent, the weight parts of the raw materials are respectively as follows: 12 parts of copper-phosphorus alloy powder; 18 parts of copper-zirconium alloy powder; 10 parts of copper-cerium alloy powder; 4 parts of copper-titanium alloy powder; 3 parts of sodium bicarbonate; 8 parts of sodium carbonate; 10 parts of sodium chloride; and 5 parts of sodium fluosilicate.

Further, the copper refining agent is prepared by uniformly mixing the raw materials according to the proportion, heating to 220-300 ℃, preserving heat for 1-2 h, continuing to heat to 320-400 ℃, preserving heat for 1-2 h, finally coating and pressing by using copper foil or copper pipe into blocks, and naturally cooling to obtain the copper refining agent.

Further, the mass ratio of the wollastonite to the calcite to the malachite to the charcoal is 8: 10: 8: 75.

further, in the step (3), the used protective gas is argon or nitrogen.

Further, in the step (4), the used protective gas is argon or nitrogen.

Based on the technical scheme, the embodiment of the invention can at least produce the following technical effects:

(1) according to the processing technology of the high-strength high-conductivity high-purity copper wire, the impurities and oxygen in the copper melt can be further removed by adding the copper refining agent, so that the purity and the oxygen content of the final copper wire product can be improved; thereby improving strength and electrical conductivity.

(2) According to the processing technology of the high-strength high-conductivity high-purity copper wire, provided by the invention, the crystal grain size of the wire is improved and the internal stress of the wire is eliminated by repeatedly crystallizing and annealing for many times and controlling the gradual rise of the temperature and the heat preservation time of the crystallizing and annealing, so that the prepared copper wire end product has higher strength and higher conductivity and can meet the use requirements of more special occasions.

Detailed Description

First, preparation example:

example 1:

a processing technology of a high-strength high-conductivity high-purity copper wire comprises the following steps:

(1) cathode electrolytic copper with the purity of more than 99.99 percent is taken as a raw material, and dirt on the surface of the raw material is removed;

(2) preheating the raw materials to 130 ℃, and preserving heat for 1.2 h;

(3) putting raw materials into a smelting device for smelting at 1200 ℃, adding a copper refining agent and a covering agent, and smelting in a protective atmosphere (the used protective gas is argon) to obtain a copper melt;

the copper refining agent comprises the following raw materials in parts by weight: 12 parts of copper-phosphorus alloy powder; 18 parts of copper-zirconium alloy powder; 10 parts of copper-cerium alloy powder; 4 parts of copper-titanium alloy powder; 4 parts of sodium bicarbonate; 8 parts of sodium carbonate; 10 parts of sodium chloride; 5 parts of sodium fluosilicate; the copper refining agent is prepared by uniformly mixing the raw materials according to the proportion, heating to 260 ℃ and preserving heat for 1.5h, continuing heating to 350 ℃ and preserving heat for 1.5h, finally coating and pressing the raw materials into blocks by using copper foils or copper pipes, and naturally cooling to obtain the copper refining agent; the adding amount of the copper refining agent is 1 percent of the weight of cathode electrolytic copper;

the covering agent is a mixture of wollastonite, calcite, malachite and charcoal, and the mass ratio of the wollastonite to the calcite to the malachite to the charcoal is 8: 10: 8: 75.

(4) transferring the copper melt obtained in the step (3) into an up-drawing continuous casting furnace, adopting charcoal as a covering agent, controlling the pressure of a liquid surface protective gas (argon is used as the protective gas) of the up-drawing continuous casting furnace to be 0.9 atmospheric pressure, controlling the water pressure of a crystallizer to be 0.4MPa, and controlling the water outlet temperature of the crystallizer to be 30 ℃ to obtain a copper blank;

(5) continuously extruding the copper blank obtained in the step (4) by using a continuous extruder to obtain a copper rod;

(6) carrying out crystallization annealing on the copper rod obtained in the step (5), heating to 420 ℃, preserving heat for 2 hours, then cooling along with a furnace, continuing to continuously roll, and rolling the copper rod into a wire blank through a continuous rolling unit;

(7) carrying out crystallization annealing on the wire blank continuously rolled in the step (6), heating to 520 ℃, preserving heat for 2 hours, and then cooling along with the furnace;

(8) carrying out crystallization annealing on the wire blank subjected to crystallization annealing in the step (7) again, heating to 620 ℃, preserving heat for 2 hours, and then cooling along with the furnace;

(9) and (4) drawing the wire blank subjected to the secondary crystallization annealing treatment in the step (8) by a drawing machine set to obtain a copper wire with the diameter of 0.12mm, namely the high-strength high-conductivity high-purity copper wire.

Example 2:

a processing technology of a high-strength high-conductivity high-purity copper wire comprises the following steps:

(1) cathode electrolytic copper with the purity of more than 99.99 percent is taken as a raw material, and dirt on the surface of the raw material is removed;

(2) preheating the raw materials to 120 ℃, and preserving heat for 1.8 h;

(3) putting the raw materials into a smelting device for smelting at 1230 ℃, adding a copper refining agent and a covering agent, and smelting in a protective atmosphere (the used protective gas is nitrogen) to obtain a copper melt;

the copper refining agent comprises the following raw materials in parts by weight: 15 parts of copper-phosphorus alloy powder; 20 parts of copper-zirconium alloy powder; 8 parts of copper-cerium alloy powder; 3 parts of copper-titanium alloy powder; 5 parts of sodium bicarbonate; 5 parts of sodium carbonate; 12 parts of sodium chloride; 3 parts of sodium fluosilicate; the copper refining agent is prepared by uniformly mixing the raw materials according to the proportion, heating to 300 ℃, keeping the temperature for 1h, continuing to heat to 400 ℃, keeping the temperature for 1h, finally coating and pressing the raw materials into blocks by using copper foils or copper pipes, and naturally cooling the blocks to obtain the copper refining agent; the adding amount of the copper refining agent is 0.5 percent of the weight of cathode electrolytic copper;

the covering agent is a mixture of wollastonite, calcite, malachite and charcoal, and the mass ratio of the wollastonite to the calcite to the malachite to the charcoal is 9: 9: 6: 80.

(4) transferring the copper melt obtained in the step (3) into an upward continuous casting furnace, adopting charcoal as a covering agent, controlling the pressure of protective gas (the used protective gas is nitrogen) on the liquid surface of the upward continuous casting furnace to be 0.6 atmospheric pressure, controlling the water pressure of a crystallizer to be 0.5MPa, and controlling the water outlet temperature of the crystallizer to be 25 ℃ to obtain a copper blank;

(5) continuously extruding the copper blank obtained in the step (4) by using a continuous extruder to obtain a copper rod;

(6) carrying out crystallization annealing on the copper rod obtained in the step (5), heating to 385 ℃, preserving heat for 2.2 hours, then cooling along with a furnace, continuously rolling, and rolling the copper rod into a wire blank through a continuous rolling unit;

(7) carrying out crystallization annealing on the wire blank continuously rolled in the step (6), heating to 485 ℃, preserving heat for 2.2 hours, and then cooling along with the furnace;

(8) carrying out crystallization annealing on the wire blank subjected to crystallization annealing in the step (7) again, heating to 585 ℃, preserving heat for 2.2 hours, and then cooling along with the furnace;

(9) and (4) drawing the wire blank subjected to the recrystallization annealing treatment in the step (8) by a drawing machine set to obtain a copper wire with the diameter of 0.12mm, namely the high-strength high-conductivity high-purity copper wire.

Example 3:

a processing technology of a high-strength high-conductivity high-purity copper wire comprises the following steps:

(1) cathode electrolytic copper with the purity of more than 99.99 percent is taken as a raw material, and dirt on the surface of the raw material is removed;

(2) preheating the raw materials to 140 ℃, and preserving heat for 0.8 h;

(3) putting the raw materials into a smelting device for smelting, wherein the smelting temperature is 1170 ℃, adding a copper refining agent and a covering agent, and smelting in a protective atmosphere (the used protective gas is argon) to obtain a copper melt;

the copper refining agent comprises the following raw materials in parts by weight: 10 parts of copper-phosphorus alloy powder; 15 parts of copper-zirconium alloy powder; 12 parts of copper-cerium alloy powder; 5 parts of copper-titanium alloy powder; 2 parts of sodium bicarbonate; 5 parts of sodium carbonate; 8 parts of sodium chloride; 8 parts of sodium fluosilicate; the copper refining agent is prepared by uniformly mixing the raw materials according to the proportion, heating to 220 ℃, keeping the temperature for 2h, continuing to heat to 320 ℃, keeping the temperature for 2h, finally coating and pressing the raw materials into blocks by using copper foils or copper pipes, and naturally cooling the blocks to obtain the copper refining agent; the adding amount of the copper refining agent is 2 percent of the weight of cathode electrolytic copper;

the covering agent is a mixture of wollastonite, calcite, malachite and charcoal, and the mass ratio of the wollastonite to the calcite to the malachite to the charcoal is 6: 11: 9: 70.

(4) transferring the copper melt obtained in the step (3) into an up-drawing continuous casting furnace, adopting charcoal as a covering agent, controlling the pressure of protective gas (argon is used as the protective gas) on the liquid surface of the up-drawing continuous casting furnace to be 1.0 atmosphere, controlling the water pressure of a crystallizer to be 0.5MPa, and controlling the water outlet temperature of the crystallizer to be 32 ℃ to obtain a copper blank;

(5) continuously extruding the copper blank obtained in the step (4) by using a continuous extruder to obtain a copper rod;

(6) carrying out crystallization annealing on the copper rod obtained in the step (5), heating to 440 ℃, preserving heat for 1.7h, then cooling along with a furnace, continuously rolling, and rolling the copper rod into a wire blank through a continuous rolling unit;

(7) carrying out crystallization annealing on the wire blank continuously rolled in the step (6), heating to 540 ℃, preserving heat for 1.7h, and then cooling along with the furnace;

(8) carrying out crystallization annealing on the wire blank subjected to crystallization annealing in the step (7) again, heating to 640 ℃, preserving heat for 1.7h, and then cooling along with the furnace;

(9) and (4) drawing the wire blank subjected to the recrystallization annealing treatment in the step (8) by a drawing machine set to obtain a copper wire with the diameter of 0.12mm, namely the high-strength high-conductivity high-purity copper wire.

Example 4:

a processing technology of a high-strength high-conductivity high-purity copper wire comprises the following steps:

(1) cathode electrolytic copper with the purity of more than 99.99 percent is taken as a raw material, and dirt on the surface of the raw material is removed;

(2) preheating the raw materials to 150 ℃, and preserving heat for 0.5 h;

(3) putting raw materials into a smelting device for smelting at 1250 ℃, adding a copper refining agent and a covering agent, and smelting in a protective atmosphere (the used protective gas is nitrogen) to obtain a copper melt;

the copper refining agent comprises the following raw materials in parts by weight: 13 parts of copper-phosphorus alloy powder; 19 parts of copper-zirconium alloy powder; 8 parts of copper-cerium alloy powder; 4 parts of copper-titanium alloy powder; 3 parts of sodium bicarbonate; 9 parts of sodium carbonate; 8 parts of sodium chloride; 7 parts of sodium fluosilicate; the copper refining agent is prepared by uniformly mixing the raw materials according to the proportion, heating to 280 ℃ and preserving heat for 1.2h, continuing heating to 380 ℃ and preserving heat for 1.2h, finally coating and pressing the raw materials into blocks by using copper foils or copper pipes, and naturally cooling to obtain the copper refining agent; the adding amount of the copper refining agent is 1.5 percent of the weight of cathode electrolytic copper;

the covering agent is a mixture of wollastonite, calcite, malachite and charcoal, and the mass ratio of the wollastonite to the calcite to the malachite to the charcoal is 10: 8: 10: 65.

(4) transferring the copper melt obtained in the step (3) into an upward continuous casting furnace, adopting charcoal as a covering agent, controlling the pressure of protective gas (the used protective gas is nitrogen) on the liquid surface of the upward continuous casting furnace to be 1.2 atmospheric pressures, controlling the water pressure of a crystallizer to be 0.6MPa, and controlling the water outlet temperature of the crystallizer to be 35 ℃ to obtain a copper blank;

(5) continuously extruding the copper blank obtained in the step (4) by using a continuous extruder to obtain a copper rod;

(6) carrying out crystallization annealing on the copper rod obtained in the step (5), heating to 450 ℃, preserving heat for 1.5h, then cooling along with a furnace, continuously rolling, and rolling the copper rod into a wire blank through a continuous rolling unit;

(7) carrying out crystallization annealing on the wire blank continuously rolled in the step (6), heating to 550 ℃, preserving heat for 1.5h, and then cooling along with the furnace;

(8) carrying out crystallization annealing on the wire blank subjected to crystallization annealing in the step (7) again, heating to 650 ℃, preserving heat for 1.5h, and then cooling along with the furnace;

(9) and (4) drawing the wire blank subjected to the recrystallization annealing treatment in the step (8) by a drawing machine set to obtain a copper wire with the diameter of 0.12mm, namely the high-strength high-conductivity high-purity copper wire.

Example 5:

a processing technology of a high-strength high-conductivity high-purity copper wire comprises the following steps:

(1) cathode electrolytic copper with the purity of more than 99.99 percent is taken as a raw material, and dirt on the surface of the raw material is removed;

(2) preheating the raw materials to 110 ℃, and preserving heat for 2 hours;

(3) putting raw materials into a smelting device for smelting, wherein the smelting temperature is 1150 ℃, adding a copper refining agent and a covering agent, and smelting in a protective atmosphere (the used protective gas is nitrogen) to obtain a copper melt;

the copper refining agent comprises the following raw materials in parts by weight: 11 parts of copper-phosphorus alloy powder; 17 parts of copper-zirconium alloy powder; 10 parts of copper-cerium alloy powder; 5 parts of copper-titanium alloy powder; 3 parts of sodium bicarbonate; 6 parts of sodium carbonate; 10 parts of sodium chloride; 4 parts of sodium fluosilicate; the copper refining agent is prepared by uniformly mixing the raw materials according to the proportion, heating to 230 ℃, preserving heat for 1.8h, continuing to heat to 330 ℃, preserving heat for 1.8h, finally coating and pressing the raw materials into blocks by using copper foils or copper tubes, and naturally cooling to obtain the copper refining agent; the adding amount of the copper refining agent is 2 percent of the weight of cathode electrolytic copper;

the covering agent is a mixture of wollastonite, calcite, malachite and charcoal, and the mass ratio of the wollastonite to the calcite to the malachite to the charcoal is 5: 12: 5: 85.

(4) transferring the copper melt obtained in the step (3) into an upward continuous casting furnace, adopting charcoal as a covering agent, controlling the pressure of protective gas (the used protective gas is nitrogen) on the liquid surface of the upward continuous casting furnace to be 1.0 atmospheric pressure, controlling the water pressure of a crystallizer to be 0.6MPa, and controlling the water outlet temperature of the crystallizer to be 28 ℃ to obtain a copper blank;

(5) continuously extruding the copper blank obtained in the step (4) by using a continuous extruder to obtain a copper rod;

(6) carrying out crystallization annealing on the copper rod obtained in the step (5), heating to 380 ℃, preserving heat for 2.5 hours, then cooling along with a furnace, continuously rolling, and rolling the copper rod into a wire blank through a continuous rolling unit;

(7) carrying out crystallization annealing on the wire blank continuously rolled in the step (6), heating to 480 ℃, preserving heat for 2.5 hours, and then cooling along with the furnace;

(8) carrying out crystallization annealing on the wire blank subjected to crystallization annealing in the step (7) again, heating to 580 ℃, preserving heat for 2.5 hours, and then cooling along with the furnace;

(9) and (4) drawing the wire blank subjected to the recrystallization annealing treatment in the step (8) by a drawing machine set to obtain a copper wire with the diameter of 0.12mm, namely the high-strength high-conductivity high-purity copper wire.

Example 6:

a processing technology of a high-strength high-conductivity high-purity copper wire comprises the following steps:

(1) cathode electrolytic copper with the purity of more than 99.99 percent is taken as a raw material, and dirt on the surface of the raw material is removed;

(2) preheating the raw materials to 135 ℃, and preserving heat for 1.5 h;

(3) putting the raw materials into a smelting device for smelting at the smelting temperature of 11900 ℃, adding a copper refining agent and a covering agent, and smelting in a protective atmosphere (the used protective gas is nitrogen) to obtain a copper melt;

the copper refining agent comprises the following raw materials in parts by weight: 15 parts of copper-phosphorus alloy powder; 15 parts of copper-zirconium alloy powder; 12 parts of copper-cerium alloy powder; 4 parts of copper-titanium alloy powder; 5 parts of sodium bicarbonate; 5 parts of sodium carbonate; 12 parts of sodium chloride; 3 parts of sodium fluosilicate; the copper refining agent is prepared by uniformly mixing the raw materials according to the proportion, heating to 300 ℃, preserving heat for 1.5h, continuing to heat to 400 ℃, preserving heat for 1.5h, finally coating and pressing the raw materials into blocks by using copper foils or copper pipes, and naturally cooling to obtain the copper refining agent; the adding amount of the copper refining agent is 1.5 percent of the weight of cathode electrolytic copper;

the covering agent is a mixture of wollastonite, calcite, malachite and charcoal, and the mass ratio of the wollastonite to the calcite to the malachite to the charcoal is 7: 10: 5: 85.

(4) transferring the copper melt obtained in the step (3) into an upward continuous casting furnace, adopting charcoal as a covering agent, controlling the pressure of protective gas (the used protective gas is nitrogen) on the liquid surface of the upward continuous casting furnace to be 0.6 atmospheric pressure, controlling the water pressure of a crystallizer to be 0.4MPa, and controlling the water outlet temperature of the crystallizer to be 35 ℃ to obtain a copper blank;

(5) continuously extruding the copper blank obtained in the step (4) by using a continuous extruder to obtain a copper rod;

(6) carrying out crystallization annealing on the copper rod obtained in the step (5), heating to 400 ℃, preserving heat for 2 hours, then cooling along with a furnace, continuously rolling, and rolling the copper rod into a wire blank through a continuous rolling unit;

(7) carrying out crystallization annealing on the wire blank continuously rolled in the step (6), heating to 500 ℃, preserving heat for 2 hours, and then cooling along with the furnace;

(8) carrying out crystallization annealing on the wire blank subjected to crystallization annealing in the step (7) again, heating to 600 ℃, preserving heat for 2 hours, and then cooling along with the furnace;

(9) and (4) drawing the wire blank subjected to the recrystallization annealing treatment in the step (8) by a drawing machine set to obtain a copper wire with the diameter of 0.12mm, namely the high-strength high-conductivity high-purity copper wire.

Second, experimental example:

1. the mechanical properties of the high-strength high-conductivity high-purity copper wires prepared in examples 1 to 6 are detected according to GB/T228.1-2010, the conductivity of the high-strength high-conductivity high-purity copper wires prepared in examples 1 to 6 is detected according to GB/T32791-2016, the purity and the oxygen content of the high-strength high-conductivity high-purity copper wires prepared in examples 1 to 6 are detected according to the trade mark and chemical composition of processed copper and copper alloy (GB5231-2012) C10100(TU00), and the detection results are shown in the following table 1:

table 1 results of testing high strength, high conductivity and high purity copper wire in examples 1 to 6

As can be seen from Table 1, the high-strength, high-conductivity and high-purity copper wires prepared in examples 1 to 6 of the present invention have excellent mechanical properties, high conductivity, high purity and low oxygen content, and can be used in more special occasions.