CN104319016A - Electromagnetic wire semi-hard processing technology - Google Patents
Electromagnetic wire semi-hard processing technology Download PDFInfo
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- CN104319016A CN104319016A CN201410616969.1A CN201410616969A CN104319016A CN 104319016 A CN104319016 A CN 104319016A CN 201410616969 A CN201410616969 A CN 201410616969A CN 104319016 A CN104319016 A CN 104319016A
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Abstract
The invention provides an electromagnetic wire semi-hard processing technology. The problem that an electromagnetic wire processed by means of an existing technology for conducting calendaring treatment on the electromagnetic wire so as to improve the yield strength of the electromagnetic wire is unstable in semi-hard quality and the cross-sectional dimension of an electromagnetic wire conductor is uneven can be solved. The electromagnetic wire semi-hard processing technology is characterized by comprising the following processing steps of firstly conducting flat-rolling processing on a raw material copper bar by means of a finishing mill to form a blank, then softening the blank in a current annealing mode, sequentially conducting flat-rolling processing and vertical-rolling processing on the softened blank by means of the finishing mill to obtain the electromagnetic wire, conducting universal-milling shape-correction treatment on the electromagnetic wire by means of a universal-milling machine, using a take-up machine to take up the electromagnetic wire, and packaging the electromagnetic wire to form a finished product.
Description
Technical field
The present invention relates to electromagnetic wire production technology field, be specially a kind of electromagnetic wire semihard processing technology.
Background technology
In order to increase winding coil anti-instantaneous large-current impact property, jumbo transformer all requires that winding coil has certain rigidity, and in order to improve Transformer Winding mechanical strength, resist the stress that sudden short circuit produces winding, propose half higher hard requirement to winding wire and namely improve yield strength requirement, the yield strength area requirement of electromagnetic wire is at 100N/mm under normal circumstances
2~ 260N/mm
2.Current high-yield strength and yield strength are at 300 N/mm
2semi-hard conducting wire application more and more extensive, in order to problem is put in the office of control transformer, usually require that three-phase resistance imbalance is the smaller the better, general control is ≤0.65%, meet this and require that electromagnetic wire dimensional homogeneity must be controlled well, and existing semihard technique cannot adapt to both meet the quality requirement that high-yield strength requires effectively to control electromagnetic wire dimensional homogeneity.
Existing electromagnetic wire semihard processing technology, directly calendering process is carried out to electromagnetic wire by the pinch roller of the upper and lower interlaced arrangement of semirigid device, see Fig. 1, the upper pressure wheel 1 on semirigid device top is single to be fixed on two-sided slide block 2, and moved up and down by adjusting nut 3 adjustable pinch wheel 1, electromagnetic wire continues through this device, according to the size adjusting nut 3 of yield strength regulate upper pressure wheel depression degree control yield strength, wire makes its flexural deformation extend by pinch roller, change the sequence of its internal grain, improve its mechanical performance, reach the object of semihard.In Fig. 1,4 is lower pressure wheel.This semirigid device is adopted to carry out semihard processing to electromagnetic wire, its defect is: because the gap of slide block and slideway is too large, produce in gap when causing top pinch roller 1 to press down and rock, particularly when pressing the wire of high-yield strength, the bending extension of electromagnetic wire is larger, easily cause electromagnetic wire pressurized uneven, thus cause electromagnetic wire semihard quality unstable, also can produce the phenomenon of electromagnetic wire conductor male and female face (on namely conductor is surveyed continuously on the same cross section of thickness direction, in, lower 3 points, draw the deviation of maximum point and smallest point conductor size), make electromagnetic wire sectional dimension uneven, the passive pressurized of electromagnetic wire conductor also makes electromagnetic wire tractive effort relatively large in addition, and pulling equipment overload operation, affects service life of equipment and there is hidden danger of quality.
Summary of the invention
For the problems referred to above, the invention provides a kind of electromagnetic wire semihard processing technology, it can solve and existingly improve by carrying out calendering process to electromagnetic wire the problem that the electromagnetic wire semihard quality that exists in electromagnetic wire yield strength technique is unstable, electromagnetic wire conductor cross-sectional size is uneven.
A kind of electromagnetic wire semihard processing technology, it is characterized in that: it comprises following procedure of processing, first raw copper bar is processed into blank via finishing mill flat-rolled, then the mode of current annealing is adopted to carry out sofening treatment to described blank, again by finishing mill to the blank after described sofening treatment carry out successively flat-rolled processing, rolling on edge processing obtain electromagnetic wire, then by universal mill to described electromagnetic wire carry out omnipotent roll Shape correction after be packaged to finished product by admission machine take-up.
Further, described raw copper bar carries out making described blank after together ~ twice flat-rolled flat-rolled is processed via described finishing mill.
Further, the concrete technology step of described current annealing is: after at the uniform velocity being heated by annealing furnace heating, baking oven successively by described blank, water-cooled is to room temperature;
Further, described annealing furnace heating adopts syllogic laser heating mode, its heating-up temperature T1 > second segment district of first paragraph district heating-up temperature T2 > the 3rd section of district heating-up temperature T3, described first paragraph district heating-up temperature T1 controls at 550 DEG C ~ 580 DEG C, second segment district heating-up temperature T2 controls at 520 DEG C ~ 550 DEG C, and the 3rd section of district heating-up temperature T3 controls at 470 DEG C ~ 500 DEG C;
Described baking oven heating-up temperature is 240 DEG C;
Described blank is heated by described annealing furnace, the linear speed of baking oven heating is 5 m/min ~ 10m/min.
Preferably, in described current annealing technique, described blank Three-section type heating temperature and described blank in described annealing furnace are heated by described annealing furnace, the linear speed of baking oven heating is preferably determined according to the sectional area of described blank;
Preferably, as described blank sectional area S≤5.0mm
2time, first paragraph district heating-up temperature preferably 550 DEG C in described annealing furnace, second segment district heating-up temperature preferably 520 DEG C, the 3rd section of district's heating-up temperature preferably 470 DEG C, described blank heats at described annealing furnace, the linear speed of baking oven heating is preferably 10m/min;
As described blank sectional area 5 mm
2< S≤10 mm
2time, first paragraph district heating-up temperature preferably 560 DEG C in described annealing furnace, second segment district heating-up temperature preferably 530 DEG C, the 3rd section of district's heating-up temperature preferably 480 DEG C, described blank heats at described annealing furnace, the linear speed of baking oven heating is preferably 8m/min;
As described blank sectional area 10 mm
2< S≤20 mm
2time, first paragraph district heating-up temperature preferably 570 DEG C in described annealing furnace, second segment district heating-up temperature preferably 540 DEG C, the 3rd section of district's heating-up temperature preferably 490 DEG C, described blank heats at described annealing furnace, the linear speed of baking oven heating is preferably 6m/min;
As described blank sectional area S > 20 mm
2time, first paragraph district heating-up temperature preferably 580 DEG C in described annealing furnace, second segment district heating-up temperature preferably 550 DEG C, the 3rd section of district's heating-up temperature preferably 500 DEG C, described blank heats at described annealing furnace, the linear speed of baking oven heating is preferably 5m/min;
In every described flat-rolled processing together, rolling on edge processing and omnipotently roll in Shape correction, all controlled the speed of described blank or electromagnetic wire by tenslator.
Reach compared with the technique of semihard processing request with existing by carrying out calendering process to electromagnetic wire, the beneficial effect of present invention process is: it adopts finishing mill to adopt the mode of flat-rolled initiatively to roll out electromagnetic wire conductor size, effectively can control the yield strength of electromagnetic wire in flat-rolled process, and the size uniform of electromagnetic wire conductor can be ensured by the shaping of universal mill, avoid occurring the phenomenon of electromagnetic wire conductor male and female face; And adopt the electromagnetic wire of present invention process processing to ensure that the stability of electromagnetic wire yield strength because conductor size is even; Present invention process initiatively rolls out electromagnetic wire conductor size by finishing mill in addition, later process only needs the tractive effort needed for normal production, therefore the passive pressurized of former technique electromagnetic wire conductor is also avoided to make tractive effort relatively large, make pulling equipment overload operation, affect service life of equipment and there is the defect of hidden danger of quality.
Accompanying drawing explanation
Fig. 1 is the semirigid device schematic diagram that existing electromagnetic wire semihard technique adopts;
Fig. 2 is electromagnetic wire semihard processing process figure of the present invention.
Embodiment
A kind of electromagnetic wire semihard processing technology, see Fig. 2, first raw copper bar is processed into blank via finishing mill flat-rolled, then the mode of current annealing is adopted to carry out sofening treatment to blank, by finishing mill, flat-rolled processing, rolling on edge processing thus reach the object that controls the sectional dimension of blank, cross section R angular shape size and yield strength and obtain electromagnetic wire are carried out successively to the blank after sofening treatment again, then by universal mill to electromagnetic wire carry out omnipotent roll Shape correction after be packaged to finished product by admission machine take-up.Wherein blank is carried out obtaining after together ~ twice flat-rolled is processed via finishing mill by raw copper bar; Wherein current annealing is that blank is at the uniform velocity heated rear water-cooled to room temperature by annealing furnace heating, baking oven successively, annealing furnace heating adopts syllogic laser heating mode, and heating-up temperature T1 > second segment district of first paragraph district heating-up temperature T2 > the 3rd section of district heating-up temperature T3, first paragraph district heating-up temperature T1 controls at 550 DEG C ~ 580 DEG C, second segment district heating-up temperature T2 controls at 520 DEG C ~ 550 DEG C, and the 3rd section of district heating-up temperature T3 controls at 470 DEG C ~ 500 DEG C; Baking oven heating-up temperature is 240 DEG C; The linear speed of blank is 5 m/min ~ 10m/min; In actual production process, the blank heating-up temperature in each section of district, linear speed of blank in annealing furnace are chosen according to the sectional area size of blank and are determined within the scope of above-mentioned parameter; In every one flat-rolled processing, rolling on edge processing and omnipotently roll in Shape correction, all controlled the speed of raw copper bar/blank or electromagnetic wire by tenslator.
Embodiment one:
Raw copper bar obtains blank by finishing mill after the process of twice flat-rolled, then the mode of current annealing is adopted to carry out sofening treatment to this blank, the concrete operations of current annealing are at the uniform velocity by annealing furnace and baking oven by blank, make blank in annealing furnace, laser heating is carried out in baking oven, wherein annealing furnace heating adopts the mode of syllogic laser heating, first paragraph district heating-up temperature T1 is 550 DEG C, second segment district heating-up temperature T2 is 530 DEG C, 3rd section of district heating-up temperature T3 is 480 DEG C, baking oven heating-up temperature is 240 DEG C, blank passes through annealing furnace, speed in baking oven is 8m/min, blank carries out the processing of flat-rolled successively by finishing mill again after sofening treatment, a rolling on edge processing obtains electromagnetic wire, then by universal mill to electromagnetic wire carry out omnipotent roll Shape correction after be packaged to finished product by admission machine take-up.After testing, the yield strength of electromagnetic wire is 310N/mm
2; In every one flat-rolled processing, rolling on edge processing and omnipotently roll in Shape correction, all controlled the speed of raw copper bar/blank or electromagnetic wire by tenslator.
Embodiment two:
Raw copper bar obtains blank by finishing mill after one flat-rolled process, then the mode of current annealing is adopted to carry out sofening treatment to this blank, the concrete operations of current annealing are at the uniform velocity by annealing furnace and baking oven by blank, make blank in annealing furnace, laser heating is carried out in baking oven, wherein annealing furnace heating adopts the mode of syllogic laser heating, first paragraph district heating-up temperature T1 is 570 DEG C, second segment district heating-up temperature T2 is 520 DEG C, 3rd section of district heating-up temperature T3 is 500 DEG C, baking oven heating-up temperature is 240 DEG C, blank passes through annealing furnace, speed in baking oven is 5 m/min, blank carries out the processing of flat-rolled successively by finishing mill again after sofening treatment, a rolling on edge processing obtains electromagnetic wire, then by universal mill to electromagnetic wire carry out omnipotent roll Shape correction after be packaged to finished product by admission machine take-up.After testing, the yield strength of electromagnetic wire is 317N/mm
2; In every one flat-rolled processing, rolling on edge processing and omnipotently roll in Shape correction, all controlled the speed of raw copper bar/blank or electromagnetic wire by tenslator.
Embodiment three:
Raw copper bar obtains blank by finishing mill after the process of twice flat-rolled, then the mode of current annealing is adopted to carry out sofening treatment to this blank, the concrete operations of current annealing are at the uniform velocity by annealing furnace and baking oven by blank, make blank in annealing furnace, laser heating is carried out in baking oven, wherein annealing furnace heating adopts the mode of syllogic laser heating, first paragraph district heating-up temperature T1 is 580 DEG C, second segment district heating-up temperature T2 is 550 DEG C, 3rd section of district heating-up temperature T3 is 470 DEG C, baking oven heating-up temperature is 240 DEG C, blank passes through annealing furnace, speed in baking oven is 10m/min, blank carries out one flat-rolled processing successively by finishing mill again after sofening treatment, the processing of one rolling on edge obtains electromagnetic wire, then by universal mill to electromagnetic wire carry out omnipotent roll Shape correction after be packaged to finished product by admission machine take-up.After testing, the yield strength of electromagnetic wire is 323N/mm
2; In every one flat-rolled processing, rolling on edge processing and omnipotently roll in Shape correction, all controlled the speed of raw copper bar/blank or electromagnetic wire by tenslator.
Embodiment four:
It is 5mm that raw copper bar obtains sectional area by finishing mill after the process of twice flat-rolled
2blank, then the mode of current annealing is adopted to carry out sofening treatment to this blank, the concrete operations of current annealing are at the uniform velocity by annealing furnace and baking oven by blank, blank is made to carry out laser heating in annealing furnace, in baking oven, wherein annealing furnace heating adopts the mode of syllogic laser heating, first paragraph district heating-up temperature 550 DEG C, second segment district heating-up temperature 520 DEG C, 3rd section of district's heating-up temperature 470 DEG C, baking oven heating-up temperature is 240 DEG C, and blank heats at described annealing furnace, the linear speed of baking oven heating is 10m/min; Blank carries out one flat-rolled processing successively by finishing mill again after sofening treatment, the processing of one rolling on edge obtains electromagnetic wire, then by universal mill to electromagnetic wire carry out omnipotent roll Shape correction after be packaged to finished product by admission machine take-up.After testing, the yield strength of electromagnetic wire is 313N/mm
2; In every one flat-rolled processing, rolling on edge processing and omnipotently roll in Shape correction, all controlled the speed of raw copper bar/blank or electromagnetic wire by tenslator.
Embodiment five:
It is 8mm that raw copper bar obtains sectional area by finishing mill after one flat-rolled process
2blank, then the mode of current annealing is adopted to carry out sofening treatment to this blank, the concrete operations of current annealing are at the uniform velocity by annealing furnace and baking oven by blank, blank is made to carry out laser heating in annealing furnace, in baking oven, wherein annealing furnace heating adopts the mode of syllogic laser heating, first paragraph district heating-up temperature 560 DEG C, second segment district heating-up temperature 530 DEG C, 3rd section of district's heating-up temperature 480 DEG C, baking oven heating-up temperature is 240 DEG C, and blank heats at described annealing furnace, the linear speed of baking oven heating is 8mm/min; Blank carries out one flat-rolled processing successively by finishing mill again after sofening treatment, the processing of one rolling on edge obtains electromagnetic wire, then by universal mill to electromagnetic wire carry out omnipotent roll Shape correction after be packaged to finished product by admission machine take-up.After testing, the yield strength of electromagnetic wire is 311N/mm
2; In every one flat-rolled processing, rolling on edge processing and omnipotently roll in Shape correction, all controlled the speed of raw copper bar/blank or electromagnetic wire by tenslator.
Embodiment six:
It is 16mm that raw copper bar obtains sectional area by finishing mill after one flat-rolled process
2blank, then the mode of current annealing is adopted to carry out sofening treatment to this blank, the concrete operations of current annealing are at the uniform velocity by annealing furnace and baking oven by blank, blank is made to carry out laser heating in annealing furnace, in baking oven, wherein annealing furnace heating adopts the mode of syllogic laser heating, first paragraph district heating-up temperature 570 DEG C, second segment district heating-up temperature 540 DEG C, 3rd section of district's heating-up temperature 490 DEG C, baking oven heating-up temperature is 240 DEG C, and blank heats at described annealing furnace, the linear speed of baking oven heating is 6mm/min; Blank carries out one flat-rolled processing successively by finishing mill again after sofening treatment, the processing of one rolling on edge obtains electromagnetic wire, then by universal mill to electromagnetic wire carry out omnipotent roll Shape correction after be packaged to finished product by admission machine take-up.After testing, the yield strength of electromagnetic wire is 308N/mm
2; In every one flat-rolled processing, rolling on edge processing and omnipotently roll in Shape correction, all controlled the speed of raw copper bar/blank or electromagnetic wire by tenslator.
Embodiment seven:
It is 22mm that raw copper bar obtains sectional area by finishing mill after the process of twice flat-rolled
2blank, then the mode of current annealing is adopted to carry out sofening treatment to this blank, the concrete operations of current annealing are at the uniform velocity by annealing furnace and baking oven by blank, blank is made to carry out laser heating in annealing furnace, in baking oven, wherein annealing furnace heating adopts the mode of syllogic laser heating, first paragraph district heating-up temperature 580 DEG C, second segment district heating-up temperature 550 DEG C, 3rd section of district's heating-up temperature 500 DEG C, baking oven heating-up temperature is 240 DEG C, and blank heats at described annealing furnace, the linear speed of baking oven heating is 5mm/min; Blank carries out one flat-rolled processing successively by finishing mill again after sofening treatment, the processing of one rolling on edge obtains electromagnetic wire, then by universal mill to electromagnetic wire carry out omnipotent roll Shape correction after be packaged to finished product by admission machine take-up.After testing, the yield strength of electromagnetic wire is 314N/mm
2; In every one flat-rolled processing, rolling on edge processing and omnipotently roll in Shape correction, all controlled the speed of raw copper bar/blank or electromagnetic wire by tenslator.
Claims (10)
1. an electromagnetic wire semihard processing technology, it is characterized in that: it comprises following procedure of processing, first raw copper bar is processed into blank via finishing mill flat-rolled, then the mode of current annealing is adopted to carry out sofening treatment to described blank, again by finishing mill to the blank after described sofening treatment carry out successively flat-rolled processing, rolling on edge processing obtain electromagnetic wire, then by universal mill to described electromagnetic wire carry out omnipotent roll Shape correction after be packaged to finished product by admission machine take-up.
2. a kind of electromagnetic wire semihard processing technology according to claim 1, is characterized in that: described raw copper bar carries out making described blank after together ~ twice flat-rolled is processed via described finishing mill.
3. a kind of electromagnetic wire semihard processing technology according to claim 1, is characterized in that: the concrete technology step of described current annealing is: after at the uniform velocity being heated by annealing furnace heating, baking oven successively by described blank, water-cooled is to room temperature.
4. a kind of electromagnetic wire semihard processing technology according to claim 3, it is characterized in that: described annealing furnace heating adopts syllogic laser heating mode, its heating-up temperature T1 > second segment district of first paragraph district heating-up temperature T2 > the 3rd section of district heating-up temperature T3, described first paragraph district heating-up temperature T1 controls at 550 DEG C ~ 580 DEG C, second segment district heating-up temperature T2 controls at 520 DEG C ~ 550 DEG C, 3rd section of district heating-up temperature T3 controls at 470 DEG C ~ 500 DEG C, described blank is heated by described annealing furnace, the linear speed of baking oven heating is 5 m/min ~ 10m/min, described baking oven heating-up temperature is 240 DEG C.
5. a kind of electromagnetic wire semihard processing technology according to claim 4, it is characterized in that: in described current annealing technique, described blank Three-section type heating temperature and described blank in described annealing furnace heated by described annealing furnace, baking oven heating linear speed preferably determine according to the sectional area of described blank.
6. a kind of electromagnetic wire semihard processing technology according to claim 5, is characterized in that: as described blank sectional area S≤5.0mm
2time, first paragraph district heating-up temperature preferably 550 DEG C in described annealing furnace, second segment district heating-up temperature preferably 520 DEG C, the 3rd section of district's heating-up temperature preferably 470 DEG C, described blank heats at described annealing furnace, the linear speed of baking oven heating is preferably 10m/min.
7. a kind of electromagnetic wire semihard processing technology according to claim 5, is characterized in that: as described blank sectional area 5 mm
2< S≤10 mm
2time, first paragraph district heating-up temperature preferably 560 DEG C in described annealing furnace, second segment district heating-up temperature preferably 530 DEG C, the 3rd section of district's heating-up temperature preferably 480 DEG C, described blank heats at described annealing furnace, the linear speed of baking oven heating is preferably 8m/min.
8. a kind of electromagnetic wire semihard processing technology according to claim 5, is characterized in that: as described blank sectional area 10 mm
2< S≤20 mm
2time, first paragraph district heating-up temperature preferably 570 DEG C in described annealing furnace, second segment district heating-up temperature preferably 540 DEG C, the 3rd section of district's heating-up temperature preferably 490 DEG C, described blank heats at described annealing furnace, the linear speed of baking oven heating is preferably 6m/min.
9. a kind of electromagnetic wire semihard processing technology according to claim 5, is characterized in that: as described blank sectional area S > 20 mm
2time, first paragraph district heating-up temperature preferably 580 DEG C in described annealing furnace, second segment district heating-up temperature preferably 550 DEG C, the 3rd section of district's heating-up temperature preferably 500 DEG C, described blank heats at described annealing furnace, the linear speed of baking oven heating is preferably 5m/min.
10. a kind of electromagnetic wire semihard processing technology according to claim 1, is characterized in that: in every described flat-rolled processing together, rolling on edge processing and omnipotently roll in Shape correction, is all controlled the speed of described blank or electromagnetic wire by tenslator.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410616969.1A CN104319016B (en) | 2014-11-06 | 2014-11-06 | A kind of electromagnetic wire semihard processing technology |
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| CN201410616969.1A CN104319016B (en) | 2014-11-06 | 2014-11-06 | A kind of electromagnetic wire semihard processing technology |
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| CN104319016A true CN104319016A (en) | 2015-01-28 |
| CN104319016B CN104319016B (en) | 2016-09-07 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112458272A (en) * | 2020-11-18 | 2021-03-09 | 安徽聚虹电子有限公司 | Continuous online semi-hard value control device and method for copper conductor for electromagnetic wire |
| CN113956659A (en) * | 2021-10-25 | 2022-01-21 | 安徽聚虹电子有限公司 | Corrosion-radiation-resistant environment-friendly special electromagnetic wire |
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| CN102682872A (en) * | 2011-03-18 | 2012-09-19 | 上海电缆研究所 | Semihard aluminum wire, overhead wire and preparation method of semihard aluminum wire |
| CN103357661A (en) * | 2013-08-01 | 2013-10-23 | 中冶赛迪工程技术股份有限公司 | Round steel all-purpose method rolling technology |
| CN103433276A (en) * | 2013-09-03 | 2013-12-11 | 中冶赛迪工程技术股份有限公司 | Profile steel rolling production line and production method thereof |
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| CN101574705A (en) * | 2008-05-09 | 2009-11-11 | 张少渊 | Two transmission shaft and four roller cross adjustable universal rolling mill and universal continuous rolling mill set formed by same |
| CN102682872A (en) * | 2011-03-18 | 2012-09-19 | 上海电缆研究所 | Semihard aluminum wire, overhead wire and preparation method of semihard aluminum wire |
| CN103357661A (en) * | 2013-08-01 | 2013-10-23 | 中冶赛迪工程技术股份有限公司 | Round steel all-purpose method rolling technology |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112458272A (en) * | 2020-11-18 | 2021-03-09 | 安徽聚虹电子有限公司 | Continuous online semi-hard value control device and method for copper conductor for electromagnetic wire |
| CN113956659A (en) * | 2021-10-25 | 2022-01-21 | 安徽聚虹电子有限公司 | Corrosion-radiation-resistant environment-friendly special electromagnetic wire |
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| CN104319016B (en) | 2016-09-07 |
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