CN104046837A - Making method of leadless copper alloy wire for automobile industry - Google Patents
Making method of leadless copper alloy wire for automobile industry Download PDFInfo
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- CN104046837A CN104046837A CN201410245711.5A CN201410245711A CN104046837A CN 104046837 A CN104046837 A CN 104046837A CN 201410245711 A CN201410245711 A CN 201410245711A CN 104046837 A CN104046837 A CN 104046837A
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Abstract
The invention discloses a making method of a leadless copper alloy wire for an automobile industry. The leadless copper alloy wire comprises 8.5-9.0wt% of Al, 0.1-0.2wt% of Mg, 0.1-0.15wt% of Fe, 0.3-0.37wt% of V, 0.1-0.16wt% of Te, 0.4-0.6wt% of B, 0.06-0.08wt% of Nb, 0.26-0.75wt% of Sc, 0.01-0.02wt% of P, 0.005-0.015wt% of S, and the balance Cu and inevitable impurities. The copper alloy wire contains no lead, so the copper alloy wire has the advantages of no generation of harmful substances, complete environmental protection, good conductivity, high mechanical strength, high heat stability, no fracture in cold working, no hot cracks in hot working, free cutting, low cost, adjustable length, low energy consumption and high yield.
Description
Technical field
The present invention relates to the preparation method of Pb-free copper-alloy line for a kind of automotive industry, belong to copper alloy manufacturing technology field.
Background technology
?copper alloy wire has good Dao electricity ﹑ Dao Re ﹑ ductility and solidity to corrosion, and widespread use is for automotive industry.In copper alloy wire, all contain lead element at present, although copper alloy containing lead line has the performance of good physics, chemistry, mechanics, but this class copper alloy can cause environmental pollution in production and use procedure, is detrimental to health, be difficult to meet more and more higher environmental requirement.
Summary of the invention
The object of the present invention is to provide a kind of preparation method of copper alloy wire of not leaded, safety and environmental protection.
The technical solution used in the present invention is as follows:
A preparation method for Pb-free copper-alloy line for automotive industry, comprises the following steps:
(1) copper billet added in smelting furnace and be warming up to fusing at 1120-1180 ℃, being then warming up to 1220-1260 ℃, adding associated alloys food ingredient, stir, after whole fusings, temperature adjustment adds refining agent refining 20-30min to 1150-1200 ℃, after skimming, is incubated 10-15min; 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:
Al 8.5-9.0, Mg 0.1-0.2, Fe 0.1-0.15, V 0.3-0.37, Te 0.1-0.16, B 0.4-0.6, Nb 0.06-0.08, Sc 0.26-0.75, P 0.01-0.02, S 0.005-0.015, surplus is copper and inevitable impurity; After analysis, according to the weight percent of each component in formula, adjust feed supplement;
(2) to dropping into the fusing of Zr-Cu-Ti-La alloy block alloy block by the feed intake 0.3-0.4% of weight of copper billet in stove, in alloy block, the mass ratio of Zr, Cu, Ti, La element is 1-2:2-4:1-2:0.4-0.6, stirs 30-45min; Then temperature adjustment is to 1180-1250 ℃, then adds refining agent refining 20-30min, insulation 15-20min 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: first with 100-120 ℃/h speed, be warming up to 240-280 ℃, insulation 3-5h, with 60-80 ℃/h speed, be warming up to 380-420 ℃ again, insulation 1-2h, is then cooled to 180-200 ℃ with 80-100 ℃/h speed, insulation 3-4h, put into again 0-3 ℃ of frozen water and process 2-3h, taking-up is warming up to 140-160 ℃ with 50-60 ℃/h speed, insulation 4-6h, and air cooling is to room temperature.
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 ℃ and calcine 3-5h, take out and pulverized 200-300 mesh sieve; Add water making beating and make the slurries of 40-50%, 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:
Copper alloy wire of the present invention is unleaded, during use, do not produce objectionable impurities, environmental protection completely, and good conductivity, physical strength is high, Heat stability is good, and cold working is not ruptured, hot-work does not produce thermal crack, Pb-free copper-alloy wire rod preparation method for the automotive industry that realized easy cutting, cost is low, length can regulate and control, consumes energy low, lumber recovery is high.
Embodiment
a preparation method for Pb-free 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 ℃, being then warming up to 1240 ℃, adding associated alloys food ingredient, stirring, after all melting, temperature adjustment to 1180 ℃ adds refining agent refining 25min, after skimming, is incubated 15min; 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: Al 8.5-9.0, Mg 0.1-0.2, Fe 0.1-0.15, V 0.3-0.37, Te 0.1-0.16, B 0.4-0.6, Nb 0.06-0.08, Sc 0.26-0.75, P 0.01-0.02, S 0.005-0.015, surplus is copper and inevitable impurity; After analysis, according to the weight percent of each component in formula, adjust feed supplement;
(2) to dropping into the fusing of Zr-Cu-Ti-La alloy block alloy block by copper billet 0.3% of the weight that feeds intake in stove, in alloy block, the mass ratio of Zr, Cu, Ti, La element is 1.5:4:1:0.5, stirs 35min; Then temperature adjustment to 1220 ℃, then add refining agent refining 20min, insulation 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: first with 120 ℃/h speed, be warming up to 260 ℃, insulation 4h, with 70 ℃/h speed, be warming up to 410 ℃ again, insulation 1.5h, is then cooled to 190 ℃ with 90 ℃/h speed, insulation 3h, put into again 0 ℃ of frozen water and process 2h, taking-up is warming up to 150 ℃ with 60 ℃/h speed, insulation 5h, and air cooling is to room temperature.
The preparation method of described refining agent is as follows: a, get the raw material of following weight (kg): sepiolite 4, fluorite 2, montmorillonite 2, sodium carbonate 3, Sodium Silicofluoride 5, vanadium diboride 2, 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 ℃ and calcine 4h, take out and pulverized 200 mesh sieves; Add water making beating and make 50% slurries, then add concentration and be 10% hydrochloric acid soln and regulate slurries PH=5.0,3000rpm speed lapping 20min, it is neutral that the sodium hydroxide solution that is 15% 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 8min, dry, pulverize, cross 300 mesh sieves.
The copper alloy wire making is through check, and its salient features is: tensile strength 489Mpa, yield strength is 382Mpa, unit elongation 18%, electric conductivity IACS(20 ℃) 93%.
Claims (2)
1. a preparation method for Pb-free copper-alloy line for automotive industry, is characterized in that comprising the following steps:
(1) copper billet added in smelting furnace and be warming up to fusing at 1120-1180 ℃, being then warming up to 1220-1260 ℃, adding associated alloys food ingredient, stir, after whole fusings, temperature adjustment adds refining agent refining 20-30min to 1150-1200 ℃, after skimming, is incubated 10-15min; 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:
Al 8.5-9.0, Mg 0.1-0.2, Fe 0.1-0.15, V 0.3-0.37, Te 0.1-0.16, B 0.4-0.6, Nb 0.06-0.08, Sc 0.26-0.75, P 0.01-0.02, S 0.005-0.015, surplus is copper and inevitable impurity; After analysis, according to the weight percent of each component in formula, adjust feed supplement;
(2) to dropping into the fusing of Zr-Cu-Ti-La alloy block alloy block by the feed intake 0.3-0.4% of weight of copper billet in stove, in alloy block, the mass ratio of Zr, Cu, Ti, La element is 1-2:2-4:1-2:0.4-0.6, stirs 30-45min; Then temperature adjustment is to 1180-1250 ℃, then adds refining agent refining 20-30min, insulation 15-20min after slagging-off;
(3) continuous casting and rolling becomes copper alloy bar, drawing wire machine to be drawn into copper alloy single line;
Copper alloy wire is sent into and in heat treatment furnace, carried out ageing treatment: first with 100-120 ℃/h speed, be warming up to 240-280 ℃, insulation 3-5h, with 60-80 ℃/h speed, be warming up to 380-420 ℃ again, insulation 1-2h, is then cooled to 180-200 ℃ with 80-100 ℃/h speed, insulation 3-4h, put into again 0-3 ℃ of frozen water and process 2-3h, taking-up is warming up to 140-160 ℃ with 50-60 ℃/h speed, insulation 4-6h, and air cooling is to room temperature.
2. the preparation method of Pb-free 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 ℃ and calcine 3-5h, take out and pulverized 200-300 mesh sieve; Add water making beating and make the slurries of 40-50%, 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.
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| CN201410245711.5A CN104046837A (en) | 2014-06-05 | 2014-06-05 | Making method of leadless copper alloy wire for automobile industry |
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| CN201410245711.5A CN104046837A (en) | 2014-06-05 | 2014-06-05 | Making method of leadless copper alloy wire for automobile industry |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005028143A1 (en) * | 2003-09-24 | 2005-03-31 | Sumitomo Metal Industries, Ltd. | Continuous casting mold and method of continuous casting for copper alloy |
| CN102676870A (en) * | 2012-06-07 | 2012-09-19 | 铁岭富兴铜业有限公司 | Lead-free copper alloy wire material and preparation method thereof |
| CN103352140A (en) * | 2013-07-01 | 2013-10-16 | 铜陵兴怡金属材料有限公司 | High-strength high-conductivity heatproof copper alloy wire rod and preparation method thereof |
| CN103608474A (en) * | 2011-03-17 | 2014-02-26 | 日立电线株式会社 | Soft dilute-copper alloy wire, soft dilute-copper alloy twisted wire, and insulated wire, coaxial cable, and composite cable using these |
| CN103834875A (en) * | 2014-03-13 | 2014-06-04 | 安徽菲茵特电梯有限公司 | Anti-corrosion elastic alloy material and preparation method thereof |
-
2014
- 2014-06-05 CN CN201410245711.5A patent/CN104046837A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005028143A1 (en) * | 2003-09-24 | 2005-03-31 | Sumitomo Metal Industries, Ltd. | Continuous casting mold and method of continuous casting for copper alloy |
| CN103608474A (en) * | 2011-03-17 | 2014-02-26 | 日立电线株式会社 | Soft dilute-copper alloy wire, soft dilute-copper alloy twisted wire, and insulated wire, coaxial cable, and composite cable using these |
| CN102676870A (en) * | 2012-06-07 | 2012-09-19 | 铁岭富兴铜业有限公司 | Lead-free copper alloy wire material and preparation method thereof |
| CN103352140A (en) * | 2013-07-01 | 2013-10-16 | 铜陵兴怡金属材料有限公司 | High-strength high-conductivity heatproof copper alloy wire rod and preparation method thereof |
| CN103834875A (en) * | 2014-03-13 | 2014-06-04 | 安徽菲茵特电梯有限公司 | Anti-corrosion elastic alloy material and preparation method thereof |
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Application publication date: 20140917 |
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