CN101540223A - Method for producing DC variable frequency enameled wire - Google Patents
Method for producing DC variable frequency enameled wire Download PDFInfo
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- CN101540223A CN101540223A CN200910068673A CN200910068673A CN101540223A CN 101540223 A CN101540223 A CN 101540223A CN 200910068673 A CN200910068673 A CN 200910068673A CN 200910068673 A CN200910068673 A CN 200910068673A CN 101540223 A CN101540223 A CN 101540223A
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Abstract
The invention provides a method for producing a DC variable frequency enameled wire which is called as a DC enameled wire for short. The method comprises the steps: selection of raw materials and production process of the DC enameled wire: (1) drawing; (2) annealing; (3) painting; (4) detecting solidification degree. The invention has the advantages that compared with the conventional enameled wire, the DC enameled wire is greatly improved in the aspects such as flexibleness, surface lubricity and the like, and especially has good wearing resistance; when the DC enameled wire is used for winding on winding equipment, the outside film of the DC enameled wire is not easy to scratch by parts contacting with the film, so that the insulating property of a winding coil of a compressor can be ensured, and the phenomenon of interturn discharge breakdown can be avoided.
Description
Technical field
The present invention relates to a kind of production method that is suitable for the making DC variable frequency enameled wire that DC frequency converting air-conditioner compressor uses.
Background technology
In order to respond actively the upgrading of air-conditioning efficiency standard, each big Air-conditioning Enterprise is adjusted the product mix one after another, release energy-conserving product, frequency conversion is a good outlet that improves efficiency, and convertible frequency air-conditioner will progressively substitute fixed frequency air conditioner. convertible frequency air-conditioner has multiple advantages such as energy-conservation, that cooling and warming fast, constant temperature, quiet, suitable voltage range are wide.In order to adapt to the demand in convertible frequency air-conditioner market, it is frequency-changeable compressor that the cardia compressor of air-conditioning also will and be made the transition by traditional invariable frequency compressor, and wherein representative is exactly DC frequency-changeable compressor, and the main feature of DC frequency-changeable compressor is exactly that volume is little, the copper cash consumption is few, the efficiency height.DC frequency-changeable compressor also proposes higher requirement to the performance of used enamelled wire simultaneously.
Enamelled wire surface lubrication, the pliability that conventional method is produced and wearing no resistance, when this enamelled wire winds the line on the direct current compressor spooling equipment, because of this equipment threading speed fast, tension force is big, the dielectric film of coiling process enamelled wire is easy to injured, and the compressor coil that turns to the turn-to-turn discharge occurs when carrying out electric performance test, finally can cause compressor to burn, can't satisfy the coiling requirement of DC frequency-changeable compressor coil because of short circuit.In view of the foregoing, must the process for making of existing enamelled wire be improved, reach raising some key performance of enamelled wire, satisfying the coiling requirement of coil in the DC frequency-changeable compressor,
Summary of the invention
At deficiency of the prior art, purpose of the present invention just provides a kind of production method of DC variable frequency enameled wire, the enamelled wire that this method is produced is used for the DC frequency-changeable compressor winding, significantly reduced that equipment greatly reduces the breakdown potential risk of compressor winding coil in operation process to the damage of enamelled wire in the coiling process.
For achieving the above object, the concrete technical scheme that the present invention adopts provides a kind of production method of DC variable frequency enameled wire, and DC frequency-changing abbreviates the DC enamelled wire as, and this method includes following steps:
1) raw-material selection:
Major ingredient is the copper bar in the raw material of DC enamelled wire, and copper bar use purity is the hypoxemia copper more than 99%, and the insulating varnish of coating uses import polyester-imide PEI lacquer, polyamidoimide PAI lacquer and self-lubricating insulated lacquer SL;
2) production process of DC enamelled wire:
1. drawing
At first the copper bar of Φ 8.0mm is pulled into the semi-finished product bare copper wire of Φ 2.0mm on big wire-drawing equipment, on the enamelling machine that connects the drawstring bag, pull into the bare copper wire of client's required size again;
2. annealing
Bare copper wire through pulling out is annealed in the annealing pipe of enamelling machine, and annealing is divided into two and distinguishes the He Er district, and the temperature in two districts is respectively 520 ℃ ± 10 ℃ and 500 ℃ ± 10 ℃;
3. japanning
Annealed back bare copper wire, coat 6-10 road polyester-imide lacquer earlier, by forming the polyester-imide insulating barrier behind the road baking-curing, coat 5-7 road polyamidoimide lacquer again, form insulating barrier by behind the road baking-curing, coat 2-3 passage self-lubricating insulating varnish at last, by forming self-lubricating insulated enamelled coating behind the road baking-curing, the final DC enamelled wire that forms with three insulation layer structures; The copper cash japanning circularity of mould endoporus when japanning, the mould bases of placing mould can move freely mould up and down, copper cash is evenly applied, make the paint film of coating and the concentricity of copper core can reach 1.00-1.20, to guarantee the homogeneity of magnet wire insulation performance;
4. the detection of state of cure
When producing, to detect initial workpiece enamelled wire product sampling degree of being cured earlier---dielectric loss figure spectrometry, by regulating enamelled wire line speed, make that first inflection temperature is in 195 ℃ of-210 ℃ of scopes in the dielectric loss collection of illustrative plates, the state of cure of the magnet wire insulation film of producing under the line speed in this temperature range reaches optimum state, thereby makes the performance of enamelled wire give full play to.
Effect of the present invention is that this DC enamelled wire is for the conventional variety enamelled wire, in aspect performances such as flexibility, surface lubrications bigger improvement has been arranged, especially has good resistance to wear, when this enamelled wire winds the line on spooling equipment, the parts that the epithelium of enamelled wire just is not easy to be contacted with it scratch, guarantee compressor winding coil insulation property, be unlikely to occur the phenomenon of turn-to-turn discharge breakdown.
Description of drawings
The DC enamelled wire cross-sectional structure schematic diagram that Fig. 1 produces for the present invention.
1, self-lubricating insulated enamelled coating 2, PAI insulating barrier
3, copper core 4, PEI insulating barrier
Embodiment
Reaching embodiment in conjunction with the accompanying drawings is illustrated the production method of DC variable frequency enameled wire of the present invention
By with the DC frequency-changeable compressor performance demands, and the particularity of the winding mode of direct current compressor coil, be that threading speed is fast, copper cash stretches greatly, the coiling process is big to the scratch of copper cash, improve in some performance of enamelled wire such as the aspects such as pliability, surface lubrication and abrasion resistance properties of enamelled wire, to satisfy the special coiling requirement of DC frequency-changeable compressor enamelled wire.
To satisfy the enamelled wire that the DC frequency-changeable compressor motor is used in order producing, to grope carrying out long time aspect raw-material type selecting and the production technology, through the too much PDCA circulation planning of wheel.At the specific (special) requirements of three aspect indexs of above-mentioned enamelled wire, DC enamelled wire cross-sectional structure as shown in Figure 1.
The production method of making DC enamelled wire of the present invention is achieved in that and includes following steps:
1) raw-material selection: the copper bar uses highly purified hypoxemia copper, and insulating varnish uses import polyester-imide lacquer PEI, polyamidoimide lacquer PAI and sliding certainly property lacquer SL.
2) the production equipment technological parameter of enamelled wire is as follows
| Solidify temperature | Evaporating | Annealing temperature | 1,2 district | The major cycle blower fan | The temperature of insulating varnish |
| Degree (℃) | Temperature (℃) | Temperature (℃) | Rotating speed (rpm) | Degree (℃) |
| 640 | 530 | 520/500 | 4000 | 50 |
3) at first the copper bar of Φ 8.0mm is pulled into the semi-finished product bare copper wire of Φ 2.0mm on big wire-drawing equipment, on the enamelling machine that connects the drawstring bag, pull into the bare copper wire-copper core 3 of client's required size again, after annealed, coat 6 ~ 10 road polyester-imide lacquers earlier, by forming PEI insulating barrier 4 among Fig. 1 behind the road baking-curing, coat 5 ~ 7 road polyamidoimide lacquers again, by forming PAI insulating barrier 2 among Fig. 1 behind the road baking-curing, coat last 2 ~ 3 roads from sliding property lacquer, by forming self-lubricating insulated enamelled coating 1 among Fig. 1 behind the road baking-curing, the final enamelled wire that forms with three insulation layer structures.
4) in process of production, the line speed of enamelled wire should be according to the dielectric loss collection of illustrative plates, this is a kind of a kind of detection method of weighing the enamelled wire state of cure, first inflection temperature is regulated, DC enamelled wire first inflection temperature should be controlled in 195 ℃ ~ 210 ℃ scopes, the selection of this speed is with the abundant curing of assurance magnet wire insulation film, and it is inexcessive not terminate in curing.Could bring into play every performance of enamelled wire so to greatest extent.
5) the copper cash japanning will be got well with the circularity of mould endoporus, and the mould bases that is used to put mould should be able to guarantee that mould can move freely up and down, so just can guarantee that insulating varnish is well-proportioned is coated onto on the copper cash, the thickness of the paint film of the enamelled wire of producing is just very even, the concentricity of paint film and copper core 3 can reach about 1.05, to guarantee the homogeneity of magnet wire insulation performance.
The DC enamelled wire of making through production method of the present invention obviously improves from following main performance index.
1) the pliability aspect of enamelled wire
Pin is worn the formula coiling and is cand be compared to loom, one threading shuttle is drawing enamelled wire and is shuttling in the inside groove of motor, enamelled wire crooked position curvature is very big, if the pliability of enamelled wire is not enough, enamelled wire after the bending is difficult to stretch, the out-of-flatness phenomenon will appear in the coil that turns to like this, brings difficulty to shaping, and it is injured to be prone to the magnet wire insulation layer in shaping.By the adjustment of baking process and drawing process in the enamelled wire manufacture process, improve the pliability of enamelled wire, mainly embody on the mechanical performance index such as percentage elongation, low stress and springback angle of enamelled wire.With specification Φ 0.80mm model Q (ZY/XY)-2/200 enamelled wire is example, and percentage elongation, low stress and the contrast of springback angle test data are as follows before and after adjusting:
DC line and ordinary lines percentage elongation, low stress and the contrast of springback angle test data
Φ0.80mm Q(ZY/XY)-2/200)
| Standard value | Ordinary lines | The DC line | |
| Percentage elongation | 28％ | 41 | 46％ |
| Springback angle | 43 | 36 | 33 |
| Low stress | 0.100％ | 0.108％ | 0.181％ |
Annotate: ordinary lines---general compressor motor enamelled wire
DC line---frequency-changeable compressor motor enamelled wire
2) enamelled wire surface lubrication aspect
To wear the formula threading speed very fast because of pin, and winding tension is big, under the tension force effect of regulation, if the lubricant effect of enamelled wire is bad, and the one, big at coiling process resistance, during with the harder parts contact of relative enamelled wire, the phenomenon that paint film scratches takes place easily; In addition, enamelled wire also can be because of the bigger stretching of the big appearance of resistance, and item performances such as the machinery of paint film, electric insulation descend thereupon.In order to improve the surface lubrication of enamelled wire, adopted at traditional PEI insulating barrier 4 compound PAI insulating barriers 2, be coated with the self-lubricating insulated enamelled coating 1 that increases the coating suitable thickness on the basis of dielectric layers again.Improved like this enamelled wire carries out confficient of static friction and detects, the static friction number reduces widely, can both be controlled at less than in 0.08 (Nippon Standard) scope, improved the surface smoothness of enamelled wire greatly, reduced, effectively reduced the generation that paint film scratches phenomenon at the suffered resistance of coiling process enamelled wire, the enamelled wire of while high lubricating effect, relative slippage easily between line and the line, the efficient of compressor motor is given full play in the requirement that helps improving the high tankful rate of compressor motor.
DC line and the contrast of ordinary lines confficient of static friction test data
Φ0.80mm Q(ZY/XY)-2/200
| Standard value | Ordinary lines | The DC line | |
| Confficient of static friction | ＜0.1 | 0.060~0.10 | 0.040~0.060 |
3) the mar proof aspect of enamelled wire
The DC frequency-changeable compressor motor uses enamelled wire except the specific (special) requirements of above three aspects, because of its special technique for coiling, in coil winding processing and molding procedure, require enamelled wire to have very strong abrasion resistance, the hardness that is to say paint film wants high, and the enamelled wire that only has the high rigidity insulating coating could be avoided or reduce insulating barrier sustaining damage in the process of high speed high-tension coiling.The abrasion resistance of enamelled wire, on performance index, be presented as the reciprocating type lacquer property requirement height of scraping, the reciprocating type scheme of scraping lacquer property that improves enamelled wire mainly contains two kinds of routes: one, employing has the scheme of the polyamidoimide complex polyester imines of high-wear resistance, because of being subjected to the restriction of machine on the high speed enamelling machine, the polyamidoimide lacquer of this high-wearing feature also is difficult to popularize use.They are two years old, analyze from the performance of insulating varnish, the resistance to wear of the polyamidoimide of table lacquer-PAI insulating barrier 2 is better than the polyester-imide of priming paint-PEI insulating barrier 4, change the thickness proportion of priming paint and table lacquer, suitably raising table lacquer occupies ratio, in order effectively to improve its scratch resistance, table lacquer occupying ratio and need bring up to more than 30% in insulating barrier.General compressor probably accounts for about 1/6 of whole thickness with the table lacquer thickness of enamelled wire.After tested, after table lacquer thickness improved, the reciprocating type lacquer performance of scraping had nearly improved 170%.
The reciprocating type scratch resistance test data contrast of DC line and ordinary lines
Φ0.80mm Q(ZY/XY)-2/200)
| Standard value | Ordinary lines | The DC line | |
| Reciprocating type scratch resistance (returning) | 80/40 | 124/98 | 340/232 |
By repeatedly organizing to the specification requirement and the field assay of DC frequency-changeable compressor with enamelled wire, by technological improvement to the general composite enameled wire of anti-fluorine production technology, for the DC Production of Enamel Wires line that DC frequency converting air-conditioner compressor is supporting is developed basically, this DC enamelled wire also has DC frequency-changeable compressor machine performance in the special coiling of enamelled wire except the traditional performance with general composite enameled wire of anti-the fluorine.DC enamelled wire sample is on probation and overall performance test by last machine, has satisfied the performance requirement of DC frequency-changeable compressor to enamelled wire basically.Raising along with air-conditioning efficiency grade, compressor of air conditioner also just develops towards miniaturization and high efficiency direction, angle analysis from electric energy and metal material saving, promote of the use of frequency-changeable compressor motor with the DC line, to have the very high value of environmental protection and economic benefit after putting on market, market prospects are wide.
DC line and the contrast of ordinary lines test data
Φ0.80mm Q(ZY/XY)-2/200)
| Performance index | Standard value | Ordinary lines | The DC line |
| Percentage elongation | 28％ | 41 | 46％ |
| Springback angle | 43 | 36 | 33 |
| Low stress | 0.100％ | 0.108％ | 0.181％ |
| Confficient of static friction | ＜0.1 | 0.060~0.10 | 0.050~0.065 |
| Reciprocating type scratch resistance (returning) | 80/40 | 124/98 | 340/232 |
Claims (1)
1, a kind of production method of DC variable frequency enameled wire, DC frequency-changing abbreviates the DC enamelled wire as, and this method includes following steps:
1) raw-material selection:
Major ingredient is the copper bar in the raw material of DC enamelled wire, and copper bar use purity is the hypoxemia copper more than 99%, and the insulating varnish of coating uses import polyester-imide (PEI) lacquer, polyamidoimide (PAI) lacquer and self-lubricating insulated lacquer (SL);
2) production process of DC enamelled wire:
1. drawing
At first the copper bar of Φ 8.0mm is pulled into the semi-finished product bare copper wire of Φ 2.0mm on big wire-drawing equipment, on the enamelling machine that connects the drawstring bag, pull into the bare copper wire of client's required size again;
2. annealing
Bare copper wire through pulling out is annealed in the annealing pipe of enamelling machine, and annealing is divided into two and distinguishes the He Er district, and the temperature in two districts is respectively 520 ℃ ± 10 ℃ and 500 ℃ ± 10 ℃;
3. japanning
Annealed back bare copper wire, coat 6-10 road polyester-imide lacquer earlier, form polyester-imide (PEI) insulating barrier (4) by behind the road baking-curing, coat 5-7 road polyamidoimide (PAI) lacquer again, form insulating barrier (2) by behind the road baking-curing, coat 2-3 passage self-lubricating insulating varnish (SL) at last, by forming self-lubricating insulated enamelled coating (1) behind the road baking-curing, the final DC enamelled wire that forms with three insulation layer structures; The copper cash japanning circularity of mould endoporus when japanning, the mould bases of placing mould can move freely mould up and down, copper cash is evenly applied, make the paint film of coating and the concentricity of copper core can reach 1.00-1.20, to guarantee the homogeneity of magnet wire insulation performance;
4. the detection of state of cure
When producing, to detect initial workpiece enamelled wire product sampling degree of being cured earlier---dielectric loss figure spectrometry, by regulating enamelled wire line speed, make that first inflection temperature is in 195 ℃ of-210 ℃ of scopes in the dielectric loss collection of illustrative plates, the state of cure of the magnet wire insulation film of producing under the line speed in this temperature range reaches optimum state, thereby makes the performance of enamelled wire give full play to.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910068673XA CN101540223B (en) | 2009-04-29 | 2009-04-29 | Method for producing DC variable frequency enameled wire |
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|---|---|---|---|
| CN200910068673XA CN101540223B (en) | 2009-04-29 | 2009-04-29 | Method for producing DC variable frequency enameled wire |
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| CN101540223B CN101540223B (en) | 2011-03-16 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102280221A (en) * | 2011-08-15 | 2011-12-14 | 江苏中容电气有限公司 | Process for producing enameled wire for compressor |
| CN102592752A (en) * | 2012-03-27 | 2012-07-18 | 江西圣达威电工材料有限公司 | Production method of single-coating enamelled wire |
| CN103050189A (en) * | 2012-12-25 | 2013-04-17 | 天津精达里亚特种漆包线有限公司 | Production method of self-adhesive electromagnetic wire |
| CN104183336A (en) * | 2013-05-28 | 2014-12-03 | 靖江市华氏电机电磁线厂 | Production technique of high-performance corona-resistant variable-frequency varnished circular copper wires |
| CN108198668A (en) * | 2018-01-08 | 2018-06-22 | 上海裕生特种线材有限公司 | A kind of preparation method of electromagnetic wire |
| CN110911053A (en) * | 2019-12-03 | 2020-03-24 | 湖州中洲电磁线有限公司 | Manufacturing method of enameled wire for network transformer |
| CN110957081A (en) * | 2019-12-24 | 2020-04-03 | 南通远景电工器材有限公司 | Extrusion process for manufacturing enameled wire |
| CN113263064A (en) * | 2021-05-14 | 2021-08-17 | 骏日科技(深圳)有限公司 | Copper wire drawing method |
Family Cites Families (3)
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| CN1242423C (en) * | 2003-05-29 | 2006-02-15 | 上海大学 | Manufacturing method of electromagnetic enamel-covered wire adaptable for variable frequency motor |
| CN200998705Y (en) * | 2006-10-20 | 2008-01-02 | 卢之云 | Tinting apparatus for self-positioning mould |
| CN100514506C (en) * | 2007-11-23 | 2009-07-15 | 广东格兰仕集团有限公司 | Preparation method for aluminum enamel covered wire |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102280221A (en) * | 2011-08-15 | 2011-12-14 | 江苏中容电气有限公司 | Process for producing enameled wire for compressor |
| CN102280221B (en) * | 2011-08-15 | 2013-01-02 | 江苏中容电气有限公司 | Process for producing enameled wire for compressor |
| CN102592752A (en) * | 2012-03-27 | 2012-07-18 | 江西圣达威电工材料有限公司 | Production method of single-coating enamelled wire |
| CN102592752B (en) * | 2012-03-27 | 2014-06-18 | 江西德源欣茂铜业有限公司 | Production method of single-coating enamelled wire |
| CN103050189A (en) * | 2012-12-25 | 2013-04-17 | 天津精达里亚特种漆包线有限公司 | Production method of self-adhesive electromagnetic wire |
| CN104183336A (en) * | 2013-05-28 | 2014-12-03 | 靖江市华氏电机电磁线厂 | Production technique of high-performance corona-resistant variable-frequency varnished circular copper wires |
| CN108198668A (en) * | 2018-01-08 | 2018-06-22 | 上海裕生特种线材有限公司 | A kind of preparation method of electromagnetic wire |
| CN108198668B (en) * | 2018-01-08 | 2020-02-28 | 上海裕生特种线材有限公司 | Preparation method of electromagnetic wire |
| CN110911053A (en) * | 2019-12-03 | 2020-03-24 | 湖州中洲电磁线有限公司 | Manufacturing method of enameled wire for network transformer |
| CN110957081A (en) * | 2019-12-24 | 2020-04-03 | 南通远景电工器材有限公司 | Extrusion process for manufacturing enameled wire |
| CN113263064A (en) * | 2021-05-14 | 2021-08-17 | 骏日科技(深圳)有限公司 | Copper wire drawing method |
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