CN104103338B - A kind of production technology of cable copper strip - Google Patents
A kind of production technology of cable copper strip Download PDFInfo
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- CN104103338B CN104103338B CN201410300030.4A CN201410300030A CN104103338B CN 104103338 B CN104103338 B CN 104103338B CN 201410300030 A CN201410300030 A CN 201410300030A CN 104103338 B CN104103338 B CN 104103338B
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- 239000010949 copper Substances 0.000 title claims abstract description 27
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 21
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 21
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 20
- 238000005516 engineering process Methods 0.000 title claims abstract description 18
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 13
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 13
- 239000001301 oxygen Substances 0.000 claims abstract description 13
- 238000010438 heat treatment Methods 0.000 claims abstract description 10
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 10
- 238000005096 rolling process Methods 0.000 claims abstract description 8
- 239000012535 impurity Substances 0.000 claims abstract description 5
- 238000003801 milling Methods 0.000 claims abstract description 5
- 238000004806 packaging method and process Methods 0.000 claims abstract description 4
- 239000004615 ingredient Substances 0.000 claims abstract description 3
- 238000009966 trimming Methods 0.000 claims abstract description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 22
- 238000005266 casting Methods 0.000 claims description 18
- 238000003723 Smelting Methods 0.000 claims description 14
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 11
- 238000000137 annealing Methods 0.000 claims description 11
- 229910002091 carbon monoxide Inorganic materials 0.000 claims description 11
- 229910052757 nitrogen Inorganic materials 0.000 claims description 11
- 238000007664 blowing Methods 0.000 claims description 9
- 239000003610 charcoal Substances 0.000 claims description 8
- 238000002844 melting Methods 0.000 claims description 7
- 230000008018 melting Effects 0.000 claims description 7
- 238000009413 insulation Methods 0.000 claims description 6
- 238000005253 cladding Methods 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 230000033228 biological regulation Effects 0.000 claims description 3
- 239000011449 brick Substances 0.000 claims description 3
- 238000009749 continuous casting Methods 0.000 claims description 3
- 239000000498 cooling water Substances 0.000 claims description 3
- 238000007499 fusion processing Methods 0.000 claims description 3
- 230000006698 induction Effects 0.000 claims description 3
- 238000002955 isolation Methods 0.000 claims description 3
- 238000010008 shearing Methods 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 2
- 239000000956 alloy Substances 0.000 claims description 2
- SKEYZPJKRDZMJG-UHFFFAOYSA-N cerium copper Chemical compound [Cu].[Ce] SKEYZPJKRDZMJG-UHFFFAOYSA-N 0.000 claims description 2
- 238000004140 cleaning Methods 0.000 claims description 2
- 238000007872 degassing Methods 0.000 claims description 2
- 238000005242 forging Methods 0.000 claims description 2
- 239000007789 gas Substances 0.000 claims description 2
- 238000005098 hot rolling Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 4
- 150000002910 rare earth metals Chemical class 0.000 description 4
- 238000005097 cold rolling Methods 0.000 description 2
- -1 ferrous metals Chemical class 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 229910000636 Ce alloy Inorganic materials 0.000 description 1
- 229910052684 Cerium Inorganic materials 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- RIRXDDRGHVUXNJ-UHFFFAOYSA-N [Cu].[P] Chemical compound [Cu].[P] RIRXDDRGHVUXNJ-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006392 deoxygenation reaction Methods 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Metal Rolling (AREA)
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Abstract
The invention discloses a kind of cable copper strip and production technology thereof, its weight ratio ingredient is: Cu:99.935 99.945%, 0 < P≤0.001%, 0 < O≤0.001%, 0 < Ce≤0.06%, and impurity summation < 0.055%.Its production technology is: founding heating hot rolling milling face roughing trimming is cleaned finish rolling finished products finished product and sheared packaging warehouse-in.The production technology of the present invention is with short production cycle, easily process, and the copper strips conductivity of production reaches more than 100%IACS, and finished product length is up to more than 8000m.Comprehensive four kinds of deoxy technologies of employing (include adding rare earth element ce), control the oxygen content of product at below 10ppm.
Description
Technical field
The invention belongs to non-ferrous metals processing field, particularly to a kind of cable copper strip and production technology thereof.
Background technology
At present, the production of copper strip for electric cable there is problems of that conductivity is low, ductility is bad, and production cost is high, is not easily formed the large-scale production of continuous batch.
Summary of the invention
It is an object of the present invention to provide a kind of cable copper strip with high connductivity, high ductibility, and can effectively reduce the productive technology of short flow of cost.
A kind of cable copper strip, its weight ratio ingredient is: Cu:99.935-99.945%, 0 ＜ P≤0.001%, 0 ＜ O≤0.001%, 0 ＜ Ce≤0.06%, impurity summation ＜ 0.055%.
Preferably, described 0 ＜ Ce≤0.04%.
Preferably, described Ce is 0.04%.
Present invention also offers the production technology of above-mentioned cable copper strip, comprise the following steps: founding-heating-hot rolling-milling face-roughing-trimming-cleaning-finish rolling-finished products-finished product shears-packaging warehouse-in.
Add phosphor copper during melting, control the phosphorus content of melt between 0-10ppm；Copper cerium alloy is added in melt.
Preferably, described founding uses frequency cored induction furnace to carry out melting, and smelting temperature is 1200-1210 DEG C, and smelting time is 2.5-3h；Smelting component grade metal solution converter stands insulation 20-30min to holding furnace；Forging type selects semi-continuous casting, and casting temperature controls at 1150-1170 DEG C, and casting speed controls at 6-8m/h, and cooling water pressure controls at 20-60kPa.
Preferably, described fusion-casting process uses following steps:
(1) Linesless charcoal cladding thickness is strengthened: using Linesless charcoal as coverture, in fusion process, Linesless charcoal cladding thickness controls, at 50-100mm, to control at 150-200mm at holding stage.
(2) nitrogen protection melting: respectively smelting furnace, insulation furnace atmosphere and casting cycle are carried out nitrogen protection; effectively isolation outside air and melt contacts; thus oxygen content in controlling melt, being blown into nitrogen parameter is pressure 0.3-0.4MPa, flow 20-22Nm3/h。
(3) RE elements of Ce is added: added in melt by copper cerium intermediate alloy.There is between rare earth and oxygen extremely strong affinity, generate high-melting-point low-density rare earth compound, float to during melting in slag, thus purify matrix, grain refining and the homogenization of red copper as-cast structure are had a significant effect by rare earth element simultaneously, and along with the increase of content of rare earth, average grain size reduces.After deliberation, Rare-Earth Ce element deoxidation effect is optimal, makes percentage by weight is total amount the 0.04% of rare earth element ce.
(4) carbon monoxide bottom blowing deoxidation degasification: by being embedded in the blowing brick with holes in smelting furnace and holding furnace bottom refractory layer, it is blown into the mixed gas of carbon monoxide or carbon monoxide and nitrogen, copper liquid is carried out blowing process, can make the obvious decrease of oxygen concentration in ingot casting, its every stove carbon monoxide amount of being blown into is 1.2-1.4Nm3。
Red copper is easily combined formation Cu during high melt with oxygen20, grain boundaries it is distributed in after solidification and crystallization, greatly reduce electric conductivity and the processing characteristics of material, and traditional processing technique is only capable of Control for Oxygen Content at 50-120ppm, and it is unstable to control effect, can not meet the requirement of high conductivity red copper product, and use above-mentioned four kinds of methods can effectively by the Control for Oxygen Content in melt at below 10ppm.
Preferably, described heating uses walking beam furnace, and heating-up temperature is 930-950 DEG C, and heat time heating time is 2.5-3.5h.
Preferably, described hot-rolled billet specification (16.5-17.0) × (430-440) mm, volume is heavily 8 tons, and after milling face, roughing, THICKNESS CONTROL is between 0.8-1.2mm, after trimming, cleaning by finishing rolling control finished product thickness between 0.2-0.5mm.
Preferably, finished products uses air cushion furnace annealing regulation soft state end properties, annealing temperature 630-660 DEG C, annealing speed 60-90m/min.
Preferably, finished product prevents from when shearing wiping to scratch producing, and edge burr staggered floor is less than 1mm, and burr height is less than 0.01mm, it is ensured that length requirement.
The effect of the present invention is: the production technology of the present invention is with short production cycle, easily process, and the copper strips conductivity of production reaches more than 100%IACS, and finished product length is up to more than 8000m.Comprehensive four kinds of deoxy technologies of employing (include adding rare earth element ce), control the oxygen content of product at below 10ppm.
The additional aspect of the present invention and advantage will part be given in the following description, and part will become apparent from the description below, or is recognized by the practice of the present invention.
Detailed description of the invention
Below in conjunction with embodiment, the invention will be further described.
Specification: the cable copper strip of thickness 0.4mm, processing technique uses:
1, founding: select Cu-CATH-1, carry out dispensing by weight, charge ratio reference: Cu:99.935-99.945%, 0 ＜ P≤0.001%, 0 ＜ Ce≤0.06%, impurity summation ＜ 0.055%, each component sum is absolutely, put into frequency cored induction furnace and carry out melting, smelting temperature 1200 DEG C, smelting component grade metal solution converter to holding furnace stands insulation .30min；Selecting semi-continuous casting, casting temperature 1150 DEG C, casting speed 7m/h, cooling water pressure 50kPa, ingot casting specification is 210 × 630 × 6700mm.By the Control for Oxygen Content in melt at below 10ppm in fusion-casting process, use following four method: (1) uses Linesless charcoal covering protection, and in fusion process, Linesless charcoal cladding thickness controls, at 80mm, to control at 180mm at holding stage.(2) Rare-Earth Ce that mass percent is 0.04% of total amount is added；(3) fire door nitrogen purging: respectively smelting furnace, insulation furnace atmosphere and casting cycle are carried out nitrogen protection, effectively isolation outside air and melt contacts, thus oxygen content in controlling melt, being blown into nitrogen parameter is pressure 0.35MPa, flow 21Nm3/h.(4) carbon monoxide bottom blowing realizes melt deoxygenation: by being embedded in the blowing brick with holes in smelting furnace and holding furnace bottom refractory layer, it is blown into carbon monoxide, copper liquid being carried out blowing process, can make the obvious decrease of oxygen concentration in ingot casting, its every stove carbon monoxide amount of being blown into is 1.3Nm3。
2, ingot casting heating: use walking beam furnace carry out ingot blank heating, it is desirable to ingot casting heating uniformity is good, and Heating Zone Temperature is 930 DEG C, and heat preservation zone temperature is 960 DEG C, and tapping temperature is not less than 820 DEG C, heat time heating time 3h, micro-reducing atmosphere.
3, hot rolling: rolling mill practice is 210-175-115-72-45-30-21-17 (mm).In the operation of rolling, mill speed is 120m/min, and rolling finishing temperature is 385 DEG C, rolls rear specification 17 × 440mm.
4, cold rolling: cold rolling point of roughing and finish rolling, roughing technique is 14.5-9.5-6.0-4.0-2.5-1.5-1.0-0.8 (mm), and finish-rolling process is 0.8-0.63-0.50-0.40 (mm).In cold-rolled process, roughing speed is 165m/min, and finishing speeds is 142m/min
5, finished products: use air cushion furnace annealing regulation soft state end properties, in annealing process, strictly control annealing temperature, speed, 630 DEG C of furnace temperature 1# district, 660 DEG C of 2#-4# district, 630 DEG C of 5# district, annealing speed 60m/min.Alkali liquid temperature 70 DEG C in annealing process, acid strength 8%, passivation temperature 75 DEG C, it is passivated concentration 0.08%, hot water temperature 65 DEG C, pH value is neutral.
6, finished product is sheared: prevent from causing zone face new defect during shearing, cutter must not be had to print, and edge burr staggered floor is less than 1mm, and burr height is less than 0.01mm, it is ensured that length requirement.
7, product inspection: measure mechanical property and the electric conductivity of product according to standard GB/T/T228, GB/T4340.1 and GB/T351 respectively, tensile strength is 223MPa, and elongation percentage is 44.3%, and hardness is 50HV, conductivity is 101%IACS, makes finished product length and reaches more than 8000m.In this finished product, weight percent composition is: Cu:99.941%, P:0.0008%, O:0.001%, Ce:0.039%, impurity summation: 0.0182%.
8, finished product is qualified, packaging warehouse-in.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that: these embodiments can carry out in the case of without departing from the principle of the present invention and objective multiple change, revise, replace and modification, the scope of the present invention is limited by claim and equivalent thereof.
Claims (5)
1. the production technology of a cable copper strip, it is characterised in that
The weight ratio ingredient of described cable copper strip is: Cu:99.935-99.945%, 0 ＜ P≤0.001%, 0 ＜ O≤0.001%, 0 ＜ Ce≤0.06%, impurity summation ＜ 0.055%；
The production technology of cable copper strip comprises the following steps: founding-heating-hot rolling-milling face-roughing-trimming-cleaning-finish rolling-finished products-finished product shears-packaging warehouse-in；
Described founding uses frequency cored induction furnace to carry out melting, and smelting temperature is 1200-1210 DEG C, and smelting time is 2.5-3h；Smelting component grade metal solution converter stands insulation 20-30min to holding furnace；Forging type selects semi-continuous casting, and casting temperature controls at 1150-1170 DEG C, and casting speed controls at 6-8m/h, and cooling water pressure controls at 20-60kPa；
Employing following steps in described fusion-casting process:
(1) Linesless charcoal cladding thickness is strengthened: using Linesless charcoal as coverture, in fusion process, Linesless charcoal cladding thickness controls, at 50-100mm, to control at 150-200mm at holding stage；
(2) nitrogen protection melting: respectively smelting furnace, insulation furnace atmosphere and casting cycle are carried out nitrogen protection; effectively isolation outside air and melt contacts; thus oxygen content in controlling melt, being blown into nitrogen parameter is pressure 0.3-0.4MPa, flow 20-22Nm3/h；
(3) RE elements of Ce is added: add in melt by copper cerium intermediate alloy, make percentage by weight is total amount the 0.04% of rare earth element ce；
(4) carbon monoxide bottom blowing deoxidation degasification: by being embedded in the blowing brick with holes in smelting furnace and holding furnace bottom refractory layer, it is blown into the mixed gas of carbon monoxide or carbon monoxide and nitrogen, copper liquid is carried out blowing process, can make the obvious decrease of oxygen concentration in ingot casting, its every stove carbon monoxide amount of being blown into is 1.2-1.4Nm3。
Production technology the most according to claim 1, it is characterised in that described heating uses walking beam furnace, and heating-up temperature is 930-950 DEG C, and heat time heating time is 2.5-3.5h.
Production technology the most according to claim 1, it is characterized in that, described hot-rolled billet specification (16.5-17.0) × (430-440) mm, volume is heavily 8 tons, after milling face, roughing, THICKNESS CONTROL is between 0.8-1.2mm, after trimming, cleaning by finishing rolling control finished product thickness between 0.2-0.5mm.
Production technology the most according to claim 1, it is characterised in that finished products uses air cushion furnace annealing regulation soft state end properties, annealing temperature 630-660 DEG C, annealing speed 60-90m/min.
Production technology the most according to claim 1, it is characterised in that finished product prevents from when shearing wiping to scratch producing, and edge burr staggered floor is less than 1mm, and burr height is less than 0.01mm, it is ensured that length requirement.
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| CN201410300030.4A CN104103338B (en) | 2014-06-30 | 2014-06-30 | A kind of production technology of cable copper strip |
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| CN201410300030.4A CN104103338B (en) | 2014-06-30 | 2014-06-30 | A kind of production technology of cable copper strip |
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| CN104103338B true CN104103338B (en) | 2016-08-24 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107443012A (en) * | 2017-06-23 | 2017-12-08 | 安徽皖宏电气设备有限公司 | A kind of transformer production oxygen-free transformer copper strip new production process |
| CN111112332A (en) * | 2018-10-31 | 2020-05-08 | 中铝华中铜业有限公司 | Processing technology of rolled copper foil blank |
| CN111500890A (en) * | 2020-04-27 | 2020-08-07 | 美的集团股份有限公司 | Copper pipe and manufacturing method thereof, heat exchanger, air conditioner and refrigeration equipment |
| CN111549254A (en) * | 2020-04-29 | 2020-08-18 | 铜陵有色金属集团股份有限公司金威铜业分公司 | Oxygen-free copper-based microalloy and preparation method and application thereof |
| CN111690838B (en) * | 2020-06-22 | 2021-10-15 | 宁波金田铜业(集团)股份有限公司 | A kind of copper strip for easy winding transformer and preparation method thereof |
| CN113088653A (en) * | 2021-04-02 | 2021-07-09 | 安徽楚江科技新材料股份有限公司 | Production process of large-size automobile parts |
| CN114959350A (en) * | 2022-05-31 | 2022-08-30 | 西安理工大学 | High-performance Cu-Hf-RE alloy and preparation method thereof |
| CN115491541B (en) * | 2022-09-24 | 2023-06-16 | 宁波金田铜管有限公司 | Oxygen-free copper tube for heat pipe and preparation method thereof |
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| CN1207411C (en) * | 2003-01-01 | 2005-06-22 | 江西省科学院应用物理研究所 | High-strength and high-conductivity copper-base material and its prepn process |
| CN101274363B (en) * | 2008-05-06 | 2011-02-02 | 浙江海亮股份有限公司 | Method for continuously converting and casting oxygen-free copper ingot |
| CN102199711B (en) * | 2011-04-15 | 2012-08-22 | 中天合金技术有限公司 | Production method of high-precision ultralong oxygen-free copper strip |
| CN103882253A (en) * | 2014-04-16 | 2014-06-25 | 黄学志 | Rare earth oxygen-free copper based alloy and production process thereof |
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Effective date of registration: 20230726 Address after: 6 households including No. 3, obt building, Shifangyuan, Linqing Economic Development Zone, Liaocheng, Shandong 250000 Patentee after: Zhongse Zhengrui (Shandong) Copper Industry Co.,Ltd. Address before: 252600 North Head of East Second Ring Road, Linqing City, Shandong Province Patentee before: CNMC ALBETTER ALBRONZE Co.,Ltd. |