CN104046816A

CN104046816A - Preparation method of high-strength copper alloy wire for automobile industry

Info

Publication number: CN104046816A
Application number: CN201410246058.4A
Authority: CN
Inventors: 徐泽军
Original assignee: Ruizhan Tongling Technologies Co Ltd
Current assignee: Ruizhan Tongling Technologies Co Ltd
Priority date: 2014-06-05
Filing date: 2014-06-05
Publication date: 2014-09-17

Abstract

The invention discloses a preparation method of a high-strength copper alloy wire for an automobile industry. The high-strength copper alloy wire is composed of the flowing elements in percentage by weight: 0.3-0.5% of Fe, 0.2-0.3% of Al, 0.4-0.6% of Sn, 0.2-0.4% of Cr, 0.1-0.2% of Ni, 0.15-0.25% of Be, 0.06-0.12% of Mo, 0.06-0.09% of Nd, 0.04-0.08% of Ta, 0.03-0.06% of Zr, 0.02-0.03% of P and the balance of copper and unavoidable impurities. According to the preparation method, on the basis of ensuring the electrical conductivity and machinability of the copper alloy wire, by increasing the content of a Mg element and adding a small amount of elements such as Nd, Ta and Zr and the like, the mechanical strength of a copper alloy is improved; and the high-strength copper alloy wire has the characteristics of good wear resistance, stress corrosion resistance and high temperature resistance, low cost, good processing performance, good welding performance, and the like.

Description

The preparation method of high strength copper alloy line for a kind of automotive industry

Technical field

The preparation method who the present invention relates to a kind of automotive industry high strength copper alloy line, belongs to copper alloy manufacturing technology field.

Background technology

?copper alloy is the important materials of national economy, has good Dao electricity ﹑ Dao Re ﹑ ductility and solidity to corrosion, be widely used in automotive industry, but existing copper alloy wire tensile strength can not meet the automotive industry of high speed development.Therefore, be badly in need of a kind of high strength copper alloy line of exploitation.

Summary of the invention

The object of the invention is to for the deficiencies in the prior art, the preparation method of a kind of automotive industry high strength copper alloy line is provided, improve the physical strength of copper alloy wire.

The technical solution used in the present invention is as follows:

A preparation method for high strength copper alloy line for automotive industry, comprises the following steps:

(1) copper billet added in smelting furnace and be warming up to fusing at 1150-1200 DEG C, being then warming up to 1240-1280 DEG C, adding associated alloys food ingredient, stir, after whole fusings, temperature adjustment adds refining agent refining 25-35min to 1180-1220 DEG C, after skimming, is incubated 15-20min; Again copper alloy liquid is carried out to stokehold chemistry real-time analysis, the weight percent of each elemental composition in copper alloy liquid is met the following requirements:

Fe 0.3-0.5, Al 0.2-0.3, Sn 0.4-0.6, Cr 0.2-0.4, Ni 0.1-0.2, Be 0.15-0.25, Mo 0.06-0.12, Nd 0.06-0.09, Ta 0.04-0.08, Zr 0.03-0.06, P 0.02-0.03, surplus is copper and inevitable impurity; After analysis, adjust feed supplement according to the weight percent of each component in formula;

(2) feed intake the 0.2-0.3% of weight to dropping into the fusing of Mn-Co-Ge-Ga alloy block in stove by copper billet, in alloy block, the mass ratio of Zr, Cu, Ti, La element is 2-3:1-2:0.5-1:0.3-0.5, stirs 30-45min; Then temperature adjustment is to 1230-1260 DEG C, then adds refining agent refining 15-25min, insulation 10-15min after slagging-off;

(3) continuous casting and rolling becomes copper alloy bar, drawing wire machine to be drawn into copper alloy single line;

(4) copper alloy wire is sent into and in heat treatment furnace, carried out ageing treatment: be first warming up to 180-220 DEG C with 80-100 DEG C/h speed, insulation 4-8h, be warming up to 340-360 DEG C with 60-70 DEG C/h speed again, insulation 2-4h, air-cooledly process 2-3h to putting into 0-3 DEG C of frozen water after 150-170 DEG C, take out and be warming up to 240-280 DEG C with 100-120 DEG C/h speed, insulation 3-5h, be warming up to 450-480 DEG C with 70-90 DEG C/h speed again, insulation 1-2h; Then be cooled to 140-160 DEG C with 120-150 DEG C/h speed, insulation 3-4h, air cooling is to room temperature.

A preparation method for high strength copper alloy line for automotive industry, the preparation method of described refining agent is as follows: a, get the raw material of following weight part: sepiolite 3-5, fluorite 1-2, montmorillonite 2-3, sodium carbonate 3-4, Sodium Silicofluoride 4-6, vanadium diboride 2-2.5, lapis amiridis 1-2, trees ashes 2-3, nano-silicon nitride 1.5-2.5, silane resin acceptor kh-550 1-2; B, sepiolite, fluorite, montmorillonite are mixed to send at 510-540 DEG C and calcine 3-5h, take out and pulverized 200-300 mesh sieve; The slurries of 40-50% are made in the making beating that adds water, then adding concentration is the hydrochloric acid soln adjusting slurries PH=4.5-5.5 of 10-15%, 2000-3000rpm speed lapping 20-30min, it is neutral that the sodium hydroxide solution that is 15-20% by concentration regulates lapping liquid pH value, and spraying is dried to obtain powder, then adds all the other raw materials, 1000-1500rpm high-speed stirring 5-10min, dry, pulverize, cross 300-400 mesh sieve.

Beneficial effect of the present invention:

The present invention is ensureing on the basis of copper alloy wire electroconductibility and machinability, by improving the content of Mg element, add a small amount of element such as Nd, Ta, Zr, improve the physical strength of copper alloy, and there is the features such as wear resistance, anticorrosion stress-resistant, high temperature resistant, low cost, processing characteristics and good welding performance.

embodiment

(1) copper billet added in smelting furnace and be warming up to fusing at 1180 DEG C, being then warming up to 1250 DEG C, adding associated alloys food ingredient, stirring, after all melting, temperature adjustment to 1200 DEG C adds refining agent refining 30min, after skimming, is incubated 20min; Again copper alloy liquid is carried out to stokehold chemistry real-time analysis, the weight percent of each elemental composition in copper alloy liquid is met the following requirements: Fe 0.3-0.5, Al 0.2-0.3, Sn 0.4-0.6, Cr 0.2-0.4, Ni 0.1-0.2, Be 0.15-0.25, Mo 0.06-0.12, Nd 0.06-0.09, Ta 0.04-0.08, Zr 0.03-0.06, P 0.02-0.03, surplus is copper and inevitable impurity; After analysis, adjust feed supplement according to the weight percent of each component in formula;

(2) by copper billet feed intake weight 0.2% to dropping into the fusing of Mn-Co-Ge-Ga alloy block in stove, in alloy block, the mass ratio of Zr, Cu, Ti, La element is 2:1:0.6:0.4, stirs 30-45min; Then temperature adjustment to 1240 DEG C, then add refining agent refining 20min, insulation 15min after slagging-off;

(4) copper alloy wire is sent into and in heat treatment furnace, carried out ageing treatment: be first warming up to 210 DEG C with 90 DEG C/h speed, insulation 6h, be warming up to 350 DEG C with 65 DEG C/h speed again, insulation 3h, air-cooledly process 3h to putting into 2 DEG C of frozen water after 160 DEG C, take out and be warming up to 260 DEG C with 120 DEG C/h speed, insulation 4h, be warming up to 470 DEG C with 80 DEG C/h speed again, insulation 1h; Then be cooled to 150 DEG C with 130 DEG C/h speed, insulation 3h, air cooling is to room temperature.

A preparation method for high strength copper alloy line for automotive industry, the preparation method of described refining agent is as follows: a, get the raw material of following weight part: sepiolite 5, fluorite 1.5, montmorillonite 2, sodium carbonate 3, Sodium Silicofluoride 5, vanadium diboride 2.5, lapis amiridis 1.5, trees ashes 2, nano-silicon nitride 2, silane resin acceptor kh-550 1.5; B, sepiolite, fluorite, montmorillonite are mixed to send at 520 DEG C and calcine 4h, take out and pulverized 200 mesh sieves; 45% slurries are made in the making beating that adds water, then add concentration and be 15% hydrochloric acid soln and regulate slurries PH=4.5,2000rpm speed lapping 30min, it is neutral that the sodium hydroxide solution that is 18% by concentration regulates lapping liquid pH value, and spraying is dried to obtain powder, then adds all the other raw materials, 1000rpm high-speed stirring 10min, dry, pulverize, cross 300-400 mesh sieve.

The copper alloy wire making is through inspection, and its salient features is: tensile strength 572Mpa, yield strength is 468Mpa, unit elongation 22%, electric conductivity IACS(20 DEG C) 92%.

Claims

1. a preparation method for high strength copper alloy line for automotive industry, is characterized in that comprising the following steps:

Mg 0.6-1.2, Fe 0.3-0.5, Al 0.2-0.3, Sn 0.4-0.6, Cr 0.2-0.4, Ni 0.1-0.2, Be 0.15-0.25, Nd 0.06-0.09, Ta 0.04-0.08, Zr 0.03-0.06, P 0.02-0.03, surplus is copper and inevitable impurity; After analysis, adjust feed supplement according to the weight percent of each component in formula;

Copper alloy wire is sent into and in heat treatment furnace, carried out ageing treatment: be first warming up to 180-220 DEG C with 80-100 DEG C/h speed, insulation 4-8h, be warming up to 340-360 DEG C with 60-70 DEG C/h speed again, insulation 2-4h, air-cooledly process 2-3h to putting into 0-3 DEG C of frozen water after 150-170 DEG C, take out and be warming up to 240-280 DEG C with 100-120 DEG C/h speed, insulation 3-5h, be warming up to 450-480 DEG C with 70-90 DEG C/h speed again, insulation 1-2h; Then be cooled to 140-160 DEG C with 120-150 DEG C/h speed, insulation 3-4h, air cooling is to room temperature.

2. the preparation method of high strength copper alloy line for a kind of automotive industry according to claim 1, it is characterized in that, the preparation method of described refining agent is as follows: a, get the raw material of following weight part: sepiolite 3-5, fluorite 1-2, montmorillonite 2-3, sodium carbonate 3-4, Sodium Silicofluoride 4-6, vanadium diboride 2-2.5, lapis amiridis 1-2, trees ashes 2-3, nano-silicon nitride 1.5-2.5, silane resin acceptor kh-550 1-2; B, sepiolite, fluorite, montmorillonite are mixed to send at 510-540 DEG C and calcine 3-5h, take out and pulverized 200-300 mesh sieve; The slurries of 40-50% are made in the making beating that adds water, then adding concentration is the hydrochloric acid soln adjusting slurries PH=4.5-5.5 of 10-15%, 2000-3000rpm speed lapping 20-30min, it is neutral that the sodium hydroxide solution that is 15-20% by concentration regulates lapping liquid pH value, and spraying is dried to obtain powder, then adds all the other raw materials, 1000-1500rpm high-speed stirring 5-10min, dry, pulverize, cross 300-400 mesh sieve.