CN104561865A - Preparation method of material for high-strength and high-conductivity copper lead - Google Patents

Preparation method of material for high-strength and high-conductivity copper lead Download PDF

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Publication number
CN104561865A
CN104561865A CN201410845916.7A CN201410845916A CN104561865A CN 104561865 A CN104561865 A CN 104561865A CN 201410845916 A CN201410845916 A CN 201410845916A CN 104561865 A CN104561865 A CN 104561865A
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China
Prior art keywords
strength
copper wire
pure copper
melting
copper
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CN201410845916.7A
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Chinese (zh)
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CN104561865B (en
Inventor
任结
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安徽森海高新电材有限公司
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Publication of CN104561865A publication Critical patent/CN104561865A/en
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    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00Apparatus or processes specially adapted for manufacturing conductors or cables
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C1/00Making alloys
    • C22C1/02Making alloys by melting
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22FCHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/08Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of copper or alloys based thereon
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • H01B1/02Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
    • H01B1/026Alloys based on copper
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B5/00Non-insulated conductors or conductive bodies characterised by their form
    • H01B5/02Single bars, rods, wires, or strips

Abstract

The invention discloses a preparation method of a material for a high-strength and high-conductivity copper lead and belongs to the technical field of material processing. By taking high-purity electrolytic cathode copper as a base body, the lead is prepared by the following steps: mixing and preheating; smelting; insulating; pulling, wiredrawing and crystallizing; and annealing. The TR standard volume resistivity is less than or equal to 0.01707 ohm/cm<3> and the tensile strength reaches over 420MPa. The lead can better satisfy the performance requirement of leads in the electronic industrial field, can be further used for the field of high-conductivity and high-strength materials and has the advantages of simple process and low cost.

Description

A kind of preparation method of high-strength highly-conductive pure copper wire material

Technical field

The invention belongs to materials processing technology field, more particularly, relate to a kind of preparation method of high-strength highly-conductive pure copper wire material.

Background technology

Fine copper has very high conduction, heat conductivility and higher plastic deformation ability, and has good corrosion resistance, is widely used in industry as good conductor.But although fine copper has the advantage of high conductivity, its hot strength is extremely low, is generally only 120-160MPa.In addition, fine copper has high plastic deformation ability, but causes very easily work hardening because of its extremely low Static Recrystallization temperature feature, thus inhibits further plastic deformation.Therefore, pure copper material is applied to wire, conductor and cooler etc. mostly, is difficult to meet multiple application demand as structural material.Fine copper electrical conductivity more than height 95%ICAS is produced in general founding, and intensity is lower than 250MPa, and adopt work hardening process, intensity can bring up to 350MPa, but electric conductivity declines, and particularly percentage elongation is lower than 5%, limits its engineer applied scope.Powder metallurgy is adopted to produce fine copper alloy, under usual 200 ~ 250MPa colds pressing 800 ~ 900 DEG C of sintering process, its electrical conductivity is at 80 ~ 90%IACS, intensity is lower than 200MPa, percentage elongation is 25 ~ 30%, sinter more than 930 DEG C, under pressing the complicated technology such as finishing or forging again subsequently, powder metallurgy fine copper performance can close to founding fine copper.

Conductance and the tensile strength of the fine copper bulk prepared by right above-mentioned several method are still on the low side, can not meet the use of some special occasions.

Summary of the invention

the problem that 1, will solve

For the above-mentioned problems in the prior art, the invention provides a kind of preparation method of high-strength highly-conductive pure copper wire material, it mainly solves general industry copper conductor two deficiencies, 1, resistivity is higher, 2, intensity is not high, preparation method of the present invention greatly can improve resistivity and the intensity of copper conductor, improves a lot to industrial robot energising communication conductor material property.

2, technical scheme

In order to solve the problem, the object of the present invention is to provide a kind of preparation method of high-strength highly-conductive pure copper wire material,

In order to realize technical purpose of the present invention, its technical scheme is: a kind of preparation method of high-strength highly-conductive pure copper wire material, is characterized in that, comprise the steps:

(1) high-strength highly-conductive pure copper wire material is that high-purity catholyte copper of more than 99.957% is for matrix with purity;

(2) strictly remove surperficial foul and be preheated to 80-100 DEG C;

(3) adopt the melting of power frequency electromagnet smelting furnace, by melting, electromagnetic agitation integration, smelting temperature controls 1150 ± 10 DEG C of scopes;

(4) the molten copper liquid after power frequency electromagnet smelting furnace melting is completely passed through middle part transition warehouse from the overflow of power frequency electromagnet smelting furnace to holding furnace, holding furnace is taked electromagnetism to heat up, is stirred, and its temperature controls between 1120-1130 DEG C, and temperature retention time is 1h;

(5) Ф 8.0 gauge copper wire base is drawn into by the traction of high-precision servo motor, and crystallisation by cooling;

(6) adopt continuous annealing wire drawing mode, annealing process temperature controls between 500-550 DEG C;

The electric conductivity of the pure copper wire material of preparation method's gained of the present invention and tensile strength is utilized to have both, even tissue, precipitated phase small and dispersed, alloy is cheap, its TR specification specific insulation is≤0.01707 Ω cm3, tensile strength reaches more than 420MPa, can meet the performance requirement of copper conductor in electronics industry preferably.

3, beneficial effect

Compared to prior art, beneficial effect of the present invention is:

(1) preparation method of the present invention can improve the electric conductivity of pure copper copper conductor;

(2) preparation method's product crystal boundary of the present invention is close to perfect hexahedron, guarantee lattice is complete, greatly reduce a large amount of microdefects produced in crystal, as point defect and dislocation etc., intensity increases, electric conductivity and tensile strength can be had both, industrial robot energising, the requirement of communication high conduction can be adapted to, adapt to industrial robot high-frequency Working motion requirement of strength;

(3) preparation method of the present invention also has technique advantage simple, with low cost, reasonable in design.

Detailed description of the invention

Below in conjunction with specific embodiment, the present invention is described further.

A preparation method for high-strength highly-conductive pure copper wire material, comprises the steps:

(1) high-strength highly-conductive pure copper wire material is that high-purity catholyte copper of more than 99.957% is for matrix with purity;

(2) strictly remove surperficial foul and be preheated to 80-100 DEG C;

(3) adopt the melting of power frequency electromagnet smelting furnace, by melting, electromagnetic agitation integration, smelting temperature controls 1150 ± 10 DEG C of scopes, ensures that cathode copper fully melts and mixes;

(4) the molten copper liquid after power frequency electromagnet smelting furnace melting is completely passed through middle part transition warehouse from the overflow of power frequency electromagnet smelting furnace to holding furnace, holding furnace is taked electromagnetism to heat up, is stirred, and its temperature controls between 1120-1130 DEG C, and temperature retention time is 1h;

(5) Ф 8.0 gauge copper wire base is drawn into by the traction of high-precision servo motor, and crystallisation by cooling;

(6) adopt continuous annealing wire drawing mode, annealing process temperature controls between 500-550 DEG C, makes to disappear through drawing the copper cash work hardening produced, and produces crystallization again, and product crystal boundary is close to perfect hexahedron.

The electric conductivity of the pure copper wire material of preparation method's gained of the present invention and tensile strength is utilized to have both, even tissue, precipitated phase small and dispersed, alloy is cheap, its TR specification specific insulation is≤0.01707 Ω cm3, be much better than industrial circular copper wire the most high-grade≤0.01715 Ω cm3 requirement, tensile strength reaches more than 420MPa, far above the requirement of industrial circular copper wire >=389MPa, the performance requirement of copper conductor in electronics industry can be met preferably.

Schematically above be described the present invention and embodiment thereof, this description is not restricted.So, if those of ordinary skill in the art enlightens by it, when not departing from the invention aim, designing the frame mode similar to this technical scheme and embodiment without creationary, all should protection scope of the present invention be belonged to.

Claims (2)

1. a preparation method for high-strength highly-conductive pure copper wire material, is characterized in that: comprise the steps:
(1) high-strength highly-conductive pure copper wire material is that high-purity catholyte copper of more than 99.957% is for matrix with purity;
(2) strictly remove surperficial foul and be preheated to 80-100 DEG C;
(3) adopt the melting of power frequency electromagnet smelting furnace, by melting, electromagnetic agitation integration, smelting temperature controls 1150 ± 10 DEG C of scopes;
(4) the molten copper liquid after power frequency electromagnet smelting furnace melting is completely passed through middle part transition warehouse from the overflow of power frequency electromagnet smelting furnace to holding furnace, holding furnace is taked electromagnetism to heat up, is stirred, and its temperature controls between 1120-1130 DEG C, and temperature retention time is 1h;
(5) Ф 8.0 gauge copper wire base is drawn into by the traction of high-precision servo motor, and crystallisation by cooling;
(6) adopt continuous annealing wire drawing mode, annealing process temperature controls between 500-550 DEG C.
2. the pure copper conductor material that obtains of the preparation method of a kind of high-strength highly-conductive pure copper wire material according to claim 1, is characterized in that: its TR specification specific insulation is≤0.01707 Ω cm3, and its tensile strength reaches more than 420MPa.
CN201410845916.7A 2014-12-31 2014-12-31 A kind of preparation method of high-strength highly-conductive pure copper wire material CN104561865B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410845916.7A CN104561865B (en) 2014-12-31 2014-12-31 A kind of preparation method of high-strength highly-conductive pure copper wire material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410845916.7A CN104561865B (en) 2014-12-31 2014-12-31 A kind of preparation method of high-strength highly-conductive pure copper wire material

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CN104561865A true CN104561865A (en) 2015-04-29
CN104561865B CN104561865B (en) 2017-06-16

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109593972A (en) * 2018-12-14 2019-04-09 安徽楚江高新电材有限公司 A kind of new energy photovoltaic power generation net interconnection conductors

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1955329A (en) * 2005-10-26 2007-05-02 中国科学院金属研究所 Superhigh strength high conduction block pure copper material and preparation method
CN202549490U (en) * 2011-08-29 2012-11-21 苏州准盛机电有限公司 Continuous annealing machine for wire drawing of copper wire
CN102974793A (en) * 2012-12-10 2013-03-20 台州学院 Method and equipment for continuously producing high-purity single crystal copper
CN203212610U (en) * 2013-03-15 2013-09-25 常州凯旺金属材料有限公司 Continuous type annealing furnace
CN203470504U (en) * 2013-09-04 2014-03-12 江阴华电新材料有限公司 Copper wire drawing and annealing all-in-one machine
CN203846080U (en) * 2014-04-03 2014-09-24 广东华声电器股份有限公司 Multiend wire-drawing continuous annealing device for copper conductor

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1955329A (en) * 2005-10-26 2007-05-02 中国科学院金属研究所 Superhigh strength high conduction block pure copper material and preparation method
CN202549490U (en) * 2011-08-29 2012-11-21 苏州准盛机电有限公司 Continuous annealing machine for wire drawing of copper wire
CN102974793A (en) * 2012-12-10 2013-03-20 台州学院 Method and equipment for continuously producing high-purity single crystal copper
CN203212610U (en) * 2013-03-15 2013-09-25 常州凯旺金属材料有限公司 Continuous type annealing furnace
CN203470504U (en) * 2013-09-04 2014-03-12 江阴华电新材料有限公司 Copper wire drawing and annealing all-in-one machine
CN203846080U (en) * 2014-04-03 2014-09-24 广东华声电器股份有限公司 Multiend wire-drawing continuous annealing device for copper conductor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109593972A (en) * 2018-12-14 2019-04-09 安徽楚江高新电材有限公司 A kind of new energy photovoltaic power generation net interconnection conductors

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Address after: 238300 Wuhu City, Anhui Province, Wuwei County mud town industrial area

Patentee after: ANHUI CHUJIANG HIGH-TECH ELECTRIC WIRE CO., LTD.

Address before: 241000 Wuhu City, Anhui Province, Wuwei County mud town industrial area

Patentee before: ANHUI SENHAI HI-TECH ELECTRIC MATERIAL CO., LTD.

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