铜线与铝线的区别及对电机性能的影响

cai456

a8821244

可以买杭州友邦的焊锡  我们公司目前在用，测试结果还可以。
10# hansen

wcyandly

看大家讨论学会了不少知识

jinke123

小功率电动机，能效要求低的电机用铝线降低成本方案是可行的。

chenht2009-60

谢谢共享！！！！！！！！！！！1

abcm1888

广大电机、变压器、线圈等相关行业生产厂家因为铜漆包线原材料巨大的成本压力，被迫采用铝漆包线代替铜漆包线以降低成本，而铝漆包线的焊接问题成了制约广大生产厂家转型的瓶颈。广州爱韬科技有限公司专业开发研制铝漆包线焊接工程，经过多年的潜心研发生产的铝漆包线专用的助焊剂，采用高科技多组元独特配方，进取高纯度国外化工原料，能快速有效的去除铝氧化膜，增强焊料和被焊料金属表面的活性，降低焊料的表面张力，增强润湿性，从而达到完美的焊接效果。该产品在铝和铝合金上面具有润湿时间短、焊接迅速、焊点光亮、美丽、可靠焊后残留少、无腐蚀等优点，是广大变压器和电机厂商的最佳选择。
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配套产品有脱漆粉和脱漆剂。

zhuzhengang006

我认为应该想解决工艺的问题,最近接了个国外的电机使用铜包铝,吓了我一跳,国外早就为节约能源做了

whsunchao

不要低于0.21，否则断线率很高。

chzda

学习！学习！！

广州电机

铝线电机不够力，耐力不够，容易烧机

fbx3426

没有做过铝线的，学习

hmily0001000

我公司除非客户有特别要求，都是做铜线的

lixuenan603

很NB，楼主很强大

kkk123

The copper versus aluminum debate goes on
The great copper windings versus aluminum windings debate goes on. It’s a topic that I first wrote about in 1988. It remains a topic of discussion today as engineers in a variety of industries question whether the quality and performance of aluminum windings can possibly compare with copper.
What’s interesting to me is one source of the debate. Some of us remember the 1960s, when aluminum house wiring was the subject of much attention because of the apparent fire hazards it created. It turned out that the cause of the house fires was not the wire itself, but rather connection problems. The junctions would become so hot that the heat would transfer to the wire itself, eventually deteriorating the wire insulation.

Consequently, all forms of aluminum wire received a bad rap. This is unjustified: aluminum can be a perfectly good material for motor windings in many applications. Aluminum is a good conductor and, when applied properly, performs quite well. There are, however, two factors to keep in mind.

First, aluminum’s conductivity is lower than copper. To compensate, aluminum magnet wire must have larger cross-sections than the equivalent copper wire to offer the same conductance. This means windings wound with aluminum wire will likely have greater volume compared with an equivalent copper wire motor.

The second consideration is properly connecting the ends of the aluminum magnet wire. The reason for this goes back to your high school chemistry course. You may remember that aluminum oxidizes much faster than other metals—in fact, if exposed to air, powdered aluminum will completely oxidize in a few days, forming a fine white powder. But, when exposed to air, fabricated aluminum (sheets, wire, etc.) tends to form a hard insulating oxide layer that stops the oxidizing process.

To make a proper connection that ensures conductivity, the oxide layer of the aluminum magnet wire must be completely pierced and yet pierced in such a way to prevent air from coming in any further contact with the aluminum. Motor manufacturers have developed high-pressure, piercing crimp connectors to do the job. These improved connection methods have helped make motors with aluminum windings every bit as reliable as motors with copper windings.

It must be pointed out that motor efficiency is a much trickier issue in the great copper versus aluminum debate. It is possible to match the power performance of a motor wound with aluminum to a motor wound with copper wire. But since aluminum requires more turns and/or a larger diameter wire, this may not always be economically feasible in some applications. In situations where efficiency and volume are not issues (such as where the motor only has to work occasionally or for very short periods of time), aluminum magnet wires make an acceptable motor.

The bottom line is that, in terms of motor quality, reliability, and life span, aluminum windings can be every bit as good as copper-wound motors. Comparisons are fair as long as you keep efficiency issues apart when looking at copper versus aluminum.

hhzcp

个人感觉铝线电机就是骗人的东西！

liu3691

学习，只是觉得有点奸商的味道

comsat

铝线电机只是习惯问题，与效率温升没有太大的关系。技术人员对自己的产品应该知根知底，不要人云亦云。
所谓的铜线电机，它的转子绕组绝大多数就是铝的。这就说明铝是可以用来做电机绕组的。如果说铝电机是骗人的，那么大家已经受骗好多年了。再说，电阻率比铜更低的是银，怎么不见大家用银代替铝来压铸笼式转子？

zhj007

谢谢版主的共享

weidong

回复 2# dazuiba521


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lany

讨论的很好，个人觉得还得看市场需求。