CN104046812A - Making method of highly ductile copper alloy wire for automobiles - Google Patents
Making method of highly ductile copper alloy wire for automobiles Download PDFInfo
- Publication number
- CN104046812A CN104046812A CN201410245750.5A CN201410245750A CN104046812A CN 104046812 A CN104046812 A CN 104046812A CN 201410245750 A CN201410245750 A CN 201410245750A CN 104046812 A CN104046812 A CN 104046812A
- Authority
- CN
- China
- Prior art keywords
- copper alloy
- speed
- insulation
- warming
- alloy wire
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229910000881 Cu alloy Inorganic materials 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 6
- 239000010949 copper Substances 0.000 claims abstract description 16
- 239000012535 impurity Substances 0.000 claims abstract description 5
- 238000009413 insulation Methods 0.000 claims description 21
- 238000010792 warming Methods 0.000 claims description 18
- 238000007670 refining Methods 0.000 claims description 15
- 229910052802 copper Inorganic materials 0.000 claims description 14
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 11
- 238000002360 preparation method Methods 0.000 claims description 10
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- 239000003795 chemical substances by application Substances 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 9
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 6
- 239000004113 Sepiolite Substances 0.000 claims description 6
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 6
- 229910045601 alloy Inorganic materials 0.000 claims description 6
- 239000000956 alloy Substances 0.000 claims description 6
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 claims description 6
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 claims description 6
- 239000010436 fluorite Substances 0.000 claims description 6
- 229910052901 montmorillonite Inorganic materials 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 6
- 229910052624 sepiolite Inorganic materials 0.000 claims description 6
- 235000019355 sepiolite Nutrition 0.000 claims description 6
- 239000002002 slurry Substances 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 235000002918 Fraxinus excelsior Nutrition 0.000 claims description 3
- 229910000927 Ge alloy Inorganic materials 0.000 claims description 3
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 3
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 3
- 238000003723 Smelting Methods 0.000 claims description 3
- 230000032683 aging Effects 0.000 claims description 3
- 238000004458 analytical method Methods 0.000 claims description 3
- 239000002956 ash Substances 0.000 claims description 3
- 238000010009 beating Methods 0.000 claims description 3
- 238000009749 continuous casting Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 235000021050 feed intake Nutrition 0.000 claims description 3
- 239000006052 feed supplement Substances 0.000 claims description 3
- 235000012041 food component Nutrition 0.000 claims description 3
- 239000005417 food ingredient Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000009775 high-speed stirring Methods 0.000 claims description 3
- 239000011021 lapis lazuli Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 239000005543 nano-size silicon particle Substances 0.000 claims description 3
- 230000007935 neutral effect Effects 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 238000010223 real-time analysis Methods 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 229910000077 silane Inorganic materials 0.000 claims description 3
- 229910052709 silver Inorganic materials 0.000 claims description 3
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 229910052718 tin Inorganic materials 0.000 claims description 3
- 229910052720 vanadium Inorganic materials 0.000 claims description 3
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims description 3
- 229910052769 Ytterbium Inorganic materials 0.000 abstract description 2
- 229910052735 hafnium Inorganic materials 0.000 abstract description 2
- 229910052738 indium Inorganic materials 0.000 abstract description 2
- 229910052746 lanthanum Inorganic materials 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Conductive Materials (AREA)
Abstract
The invention discloses a making method of a highly ductile copper alloy wire for automobiles. The highly ductile copper alloy wire comprises 0.4-0.6wt% of Fe, 0.2-0.3wt% of Zn, 0.3-0.5wt% of Mg, 0.15-0.25wt% of Mn, 0.08-0.14wt% of Bi, 0.04-0.06wt% of Hf, 0.02-0.04wt% of In, 0.03-0.06wt% of La, 0.02-0.03wt% of Yb, 0.005-0.015wt% of P, and the balance Cu and inevitable impurities. The addition of a tiny amount of Hf, In, La, Yb and the like reinforces and purifies Cu, so the conductivity and the mechanical strength of copper alloy are guaranteed, and the toughness and plasticity of a product obtained in the invention are improved, thereby the elongation of the copper alloy wire is not lower than 40%.
Description
Technical field
The present invention relates to the preparation method of high expanded copper alloy wire for a kind of automobile, belong to copper alloy manufacturing technology field.
Background technology
?copper alloy has the good electricity ﹑ that leads and leads hot property ﹑ ductility and solidity to corrosion, so electric motor of automobile electrical equipment winding coil, electric wire and cable conductor material etc. are made in widespread use.Can not be controlled to oxygen level in traditional production of copper alloy wire process, and in copper, alloying element ratio is unreasonable, and impurity content is too high, and this has a great impact the electroconductibility of copper alloy wire, ductility and intensity.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, the preparation method of a kind of automobile with high expanded copper alloy wire is provided.
The technical solution used in the present invention is as follows:
A preparation method for high expanded copper alloy wire for automobile, comprises the following steps:
(1) copper billet added in smelting furnace and be warming up to fusing at 1140-1180 ℃, being then warming up to 1200-1250 ℃, adding associated alloys food ingredient, stir, after whole fusings, temperature adjustment adds refining agent refining 30-35min to 1160-1220 ℃, after skimming, is incubated 15-25min; 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 0.4-0.6, Zn 0.2-0.3, Mg 0.3-0.5, Mn 0.15-0.25, Bi 0.08-0.14, Hf 0.04-0.06, In 0.02-0.04, La 0.03-0.06, Yb 0.02-0.03, P 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) by copper billet, feed intake the 0.2-0.3% of weight to dropping into the fusing of Sn-Ag-Cu-Ni-Ge alloy block in stove, in alloy block, the mass ratio of Sn, Ag, Cu, Ni, Ge element is 1-2:3-5:0.5-1:0.2-0.4:0.1-0.2, stirs 25-35min; Then temperature adjustment is to 1180-1240 ℃, then adds refining agent refining 20-25min, 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 60-80 ℃/h speed, be warming up to 150-180 ℃, insulation 3-6h, with 70-90 ℃/h speed, be warming up to 360-390 ℃ again, insulation 2-3h, with 50-60 ℃/h speed, be cooled to 220-240 ℃ again, insulation 3-4h, then with 80-100 ℃/h speed, be warming up to 410-430 ℃, insulation 1-2h; Then with 70-80 ℃/h speed, be cooled to 240-260 ℃, insulation 4-5h, then puts into 0-3 ℃ of frozen water and processes 3-5h, and take out and be warming up to 160-190 ℃ with 50-60 ℃/h speed, insulation 2-4h, 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:
The present invention adopts elements such as adding micro-Hf, In, La, Yb to strengthen and cleaning action copper, when guaranteeing copper alloy electroconductibility and physical strength, improve toughness and the plasticity of product, tensile strength >=420MPa, electric conductivity >=90%IACS, unit elongation >=40%.
embodiment
A preparation method for high expanded copper alloy wire for automobile, comprises the following steps:
(1) copper billet added in smelting furnace and be warming up to fusing at 1160 ℃, being then warming up to 1220 ℃, adding associated alloys food ingredient, stirring, after all melting, temperature adjustment to 1180 ℃ 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 0.4-0.6, Zn 0.2-0.3, Mg 0.3-0.5, Mn 0.15-0.25, Bi 0.08-0.14, Hf 0.04-0.06, In 0.02-0.04, La 0.03-0.06, Yb 0.02-0.03, P 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) by copper billet feed intake weight 0.2% to dropping into the fusing of Sn-Ag-Cu-Ni-Ge alloy block in stove, in alloy block, the mass ratio of Sn, Ag, Cu, Ni, Ge element is 1:3.5:0.8:0.3:0.1, stirs 30min; 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 70 ℃/h speed, be warming up to 160 ℃, insulation 4h, then be warming up to 380 ℃ with 80 ℃/h speed, insulation 2h, then with 60 ℃/h speed, be cooled to 240 ℃, insulation 3h, with 100 ℃/h speed, be warming up to 420 ℃ again, insulation 1h; Then with 80 ℃/h speed, be cooled to 250 ℃, insulation 4h, then puts into 1 ℃ of frozen water and processes 4h, and take out and be warming up to 170 ℃ with 60 ℃/h speed, insulation 3h, 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 1.5, 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 2; B, sepiolite, fluorite, montmorillonite are mixed to send at 540 ℃ and calcine 3h, take out and pulverized 200 mesh sieves; Add water making beating and make 4% slurries, then add concentration and be 10% hydrochloric acid soln and regulate slurries PH=5.5,2000rpm speed lapping 25min, 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 472Mpa, yield strength is 386Mpa, unit elongation 45%, electric conductivity IACS(20 ℃) 91%.
Claims (2)
1. a preparation method for high expanded copper alloy wire for automobile, is characterized in that comprising the following steps:
(1) copper billet added in smelting furnace and be warming up to fusing at 1140-1180 ℃, being then warming up to 1200-1250 ℃, adding associated alloys food ingredient, stir, after whole fusings, temperature adjustment adds refining agent refining 30-35min to 1160-1220 ℃, after skimming, is incubated 15-25min; 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 0.4-0.6, Zn 0.2-0.3, Mg 0.3-0.5, Mn 0.15-0.25, Bi 0.08-0.14, Hf 0.04-0.06, In 0.02-0.04, La 0.03-0.06, Yb 0.02-0.03, P 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) by copper billet, feed intake the 0.2-0.3% of weight to dropping into the fusing of Sn-Ag-Cu-Ni-Ge alloy block in stove, in alloy block, the mass ratio of Sn, Ag, Cu, Ni, Ge element is 1-2:3-5:0.5-1:0.2-0.4:0.1-0.2, stirs 25-35min; Then temperature adjustment is to 1180-1240 ℃, then adds refining agent refining 20-25min, 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 60-80 ℃/h speed, be warming up to 150-180 ℃, insulation 3-6h, with 70-90 ℃/h speed, be warming up to 360-390 ℃ again, insulation 2-3h, with 50-60 ℃/h speed, be cooled to 220-240 ℃ again, insulation 3-4h, then with 80-100 ℃/h speed, be warming up to 410-430 ℃, insulation 1-2h; Then with 70-80 ℃/h speed, be cooled to 240-260 ℃, insulation 4-5h, then puts into 0-3 ℃ of frozen water and processes 3-5h, and take out and be warming up to 160-190 ℃ with 50-60 ℃/h speed, insulation 2-4h, air cooling is to room temperature.
2. the preparation method of high expanded copper alloy wire for a kind of automobile 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410245750.5A CN104046812B (en) | 2014-06-05 | 2014-06-05 | A kind of automobile preparation method of high expanded copper alloy wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410245750.5A CN104046812B (en) | 2014-06-05 | 2014-06-05 | A kind of automobile preparation method of high expanded copper alloy wire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104046812A true CN104046812A (en) | 2014-09-17 |
| CN104046812B CN104046812B (en) | 2016-08-24 |
Family
ID=51500204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410245750.5A Expired - Fee Related CN104046812B (en) | 2014-06-05 | 2014-06-05 | A kind of automobile preparation method of high expanded copper alloy wire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104046812B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN120280222A (en) * | 2025-06-09 | 2025-07-08 | 安徽鑫海高导新材料有限公司 | Preparation process of ultrafine copper conductor for new energy automobile |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1681360A1 (en) * | 2003-09-19 | 2006-07-19 | Sumitomo Metal Industries Limited | Copper alloy and method for production thereof |
| CN1930314A (en) * | 2004-03-12 | 2007-03-14 | 住友金属工业株式会社 | Copper alloy and its manufacturing method |
| US20070148032A1 (en) * | 2005-12-22 | 2007-06-28 | Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | Copper alloy having excellent stress relaxation property |
| JP2012502189A (en) * | 2008-09-10 | 2012-01-26 | ピーエムエックス・インダストリーズ・インコーポレーテッド | White copper alloy with reduced nickel content |
| CN103695726A (en) * | 2013-12-26 | 2014-04-02 | 青岛友铭辰生物技术有限公司 | Aluminum alloy power transmission line for electrified railways and preparation method of aluminum alloy power transmission line |
-
2014
- 2014-06-05 CN CN201410245750.5A patent/CN104046812B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1681360A1 (en) * | 2003-09-19 | 2006-07-19 | Sumitomo Metal Industries Limited | Copper alloy and method for production thereof |
| CN1930314A (en) * | 2004-03-12 | 2007-03-14 | 住友金属工业株式会社 | Copper alloy and its manufacturing method |
| US20070148032A1 (en) * | 2005-12-22 | 2007-06-28 | Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | Copper alloy having excellent stress relaxation property |
| JP2012502189A (en) * | 2008-09-10 | 2012-01-26 | ピーエムエックス・インダストリーズ・インコーポレーテッド | White copper alloy with reduced nickel content |
| CN103695726A (en) * | 2013-12-26 | 2014-04-02 | 青岛友铭辰生物技术有限公司 | Aluminum alloy power transmission line for electrified railways and preparation method of aluminum alloy power transmission line |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN120280222A (en) * | 2025-06-09 | 2025-07-08 | 安徽鑫海高导新材料有限公司 | Preparation process of ultrafine copper conductor for new energy automobile |
| CN120280222B (en) * | 2025-06-09 | 2025-10-14 | 安徽鑫海高导新材料有限公司 | Preparation process of ultrafine copper conductor for new energy automobile |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104046812B (en) | 2016-08-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104060121B (en) | The preparation method of wear-resistant copper alloy wire for a kind of automobile | |
| CN104745902B (en) | High strength Al-Mg-Si-Cu alloy for bicycles and processing technology thereof | |
| CN104046838A (en) | Preparation method of high-strength high-toughness copper alloy wire for automatic cables | |
| CN104046831A (en) | Making method of copper alloy wire for automobiles | |
| CN103014463A (en) | Processing method of anti-fatigue aluminum alloy foaming die cast | |
| CN103710589A (en) | Preparation method of high-heat-conductivity aluminum alloy section for motor shell | |
| CN104178660A (en) | High-strength Cu-Ni-Si alloy and preparation method thereof | |
| CN103014448A (en) | Processing method of improved 6061 aluminum alloy refrigerator foaming die cast | |
| CN104046808A (en) | Making method of copper alloy contact wires for electrical locomotives | |
| CN103695726A (en) | Aluminum alloy power transmission line for electrified railways and preparation method of aluminum alloy power transmission line | |
| CN103710591A (en) | Preparation method for aluminum alloy profile with excellent welding performance | |
| CN108315602A (en) | A kind of railway rare earth aluminium alloy cable conductor and preparation method | |
| CN109234553A (en) | A kind of Al-Zr-Sc-B heat-resistant alloy monofilament and preparation method thereof | |
| CN104152728A (en) | Preparation method of high heat-conducting copper alloy wire for automobile wire harness | |
| CN104046816A (en) | Preparation method of high-strength copper alloy wire for automobile industry | |
| CN104018023A (en) | Method for preparing copper alloy bonding wire for light-emitting diode (LED) encapsulation | |
| CN104046842A (en) | Preparation method of high-content nickel-copper alloy wire for electronic instrument of automobile | |
| CN104046817B (en) | A kind of preparation method of auto industry high property copper alloy line | |
| CN103469030A (en) | Anticorrosive easy-welding aluminum alloy section bar and making method thereof | |
| CN104046832A (en) | Making method of highly conductive copper alloy wire or automobile generator | |
| CN104046815A (en) | Preparation method of low-silicon lead-substituted copper alloy wire for automobile | |
| CN104046812A (en) | Making method of highly ductile copper alloy wire for automobiles | |
| CN103710585A (en) | Preparation method for aluminum alloy profile for engine cylinder body | |
| CN103725939A (en) | Preparation method of aluminium alloy section for hot roller of duplicator | |
| CN104046840B (en) | A kind of preparation method of electronic automobile meter Albrac line |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201105 Address after: 244000 No.2 workshop, no.3888, west section of Cuihu Sixth Road, Tongling City, Anhui Province Patentee after: Anhui Xinchen Automobile Manufacturing Co., Ltd Address before: 244061 Mount Huangshan Road, Tongling economic and Technological Development Zone, Anhui Patentee before: SHARP EXHIBITION (TONGLING) TECHNOLOGY Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160824 Termination date: 20210605 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |