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#1
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induction motor windings
I'm in a trade where I have access to many appliance type electric
motors. My question is what is the easiest way to remove the windings from a motor case. I don't care if I damage them as I am only after the copper. thanks in advance. adam |
#2
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induction motor windings
On Dec 6, 4:01*pm, wrote:
I'm in a trade where I have access to many appliance type electric motors. *My question is what is the easiest way to remove the windings from a motor case. *I don't care if I damage them as I am only after the copper. *thanks in advance. adam IMO there is no practical quick way of doing it. You could sit down and pick away at the windings and maybe get a half pound of copper in less than an hour or so, if the windings were not cemented in place as they often are. Some research into commercial methods will be a real clue. Expect to see nice tools like continuous conveyor furnaces running inert atmospheres at 1500 degrees F. Since copper prices have tanked a good bit lately, you could make more money flipping burgers. Talk to some folks at electric motor repair shops. They do this kind of thing routinely, and it definitely isn't cheap or quick, which is why so many appliance motors wind up as throwaways. But hey! there may be a surprise out there. Good luck. Joe |
#3
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induction motor windings
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#4
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induction motor windings
"The Daring Dufas" wrote in message ... wrote: I'm in a trade where I have access to many appliance type electric motors. My question is what is the easiest way to remove the windings from a motor case. I don't care if I damage them as I am only after the copper. thanks in advance. adam Years ago I worked at a company that rewound electric motors. The way the guys in the motor shop removed the old windings was to slice off all the loops on one end then pull the windings out. You might be able to slice off the small loops with a Dremel tool equipped with a cut off wheel. Flush cutters may also work for the small motors. TDD Lots easier if you heat them up first. We used an electric oven. Get them as hot as you can and the windings will come out. Many newer motors have Aluminum windings. Check first or you'll waste a lot of time. Al |
#5
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induction motor windings
Big Al wrote:
"The Daring Dufas" wrote in message ... wrote: I'm in a trade where I have access to many appliance type electric motors. My question is what is the easiest way to remove the windings from a motor case. I don't care if I damage them as I am only after the copper. thanks in advance. adam Years ago I worked at a company that rewound electric motors. The way the guys in the motor shop removed the old windings was to slice off all the loops on one end then pull the windings out. You might be able to slice off the small loops with a Dremel tool equipped with a cut off wheel. Flush cutters may also work for the small motors. TDD Lots easier if you heat them up first. We used an electric oven. Get them as hot as you can and the windings will come out. Many newer motors have Aluminum windings. Check first or you'll waste a lot of time. Al Chuckle. Don't inhale the fumes from heated-up old electronics. That is why most 'demanufacturing' operations are offshore now- they violate US smog and OSHA laws. Among the tree-huggers, especially those in the countries where the operations are, it is getting to be a bit of a scandal, the Evil Western Rich Countries offloading hazardous materials to countries not able to properly handle them, and too poor to be picky about it. They sorta have a point. Seriously, the outgassing from some of those remelted potting compounds is nasty stuff. -- aem sends... |
#6
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induction motor windings
aemeijers wrote:
Big Al wrote: "The Daring Dufas" wrote in message ... wrote: I'm in a trade where I have access to many appliance type electric motors. My question is what is the easiest way to remove the windings from a motor case. I don't care if I damage them as I am only after the copper. thanks in advance. adam Years ago I worked at a company that rewound electric motors. The way the guys in the motor shop removed the old windings was to slice off all the loops on one end then pull the windings out. You might be able to slice off the small loops with a Dremel tool equipped with a cut off wheel. Flush cutters may also work for the small motors. TDD Lots easier if you heat them up first. We used an electric oven. Get them as hot as you can and the windings will come out. Many newer motors have Aluminum windings. Check first or you'll waste a lot of time. Al Chuckle. Don't inhale the fumes from heated-up old electronics. That is why most 'demanufacturing' operations are offshore now- they violate US smog and OSHA laws. Among the tree-huggers, especially those in the countries where the operations are, it is getting to be a bit of a scandal, the Evil Western Rich Countries offloading hazardous materials to countries not able to properly handle them, and too poor to be picky about it. They sorta have a point. Seriously, the outgassing from some of those remelted potting compounds is nasty stuff. -- aem sends... Back then, the motor shop at the company had a Trico vat. Trichloroethylene in the vat was heated producing a heavy vapor that would eat just about anything off the motor housings when they were dipped into the tank. It was quite amazing to see the stuff running off the stators when the hot vapor hit them. It worked so well it was banned then replaced by something else that was later banned because it killed helpless little ozones and I don't know what in the hell is being used now. Now Trichloroethylene is on the way back, strange world. TDD |
#7
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induction motor windings
The Daring Dufas wrote:
aemeijers wrote: Big Al wrote: "The Daring Dufas" wrote in message ... wrote: I'm in a trade where I have access to many appliance type electric motors. My question is what is the easiest way to remove the windings from a motor case. I don't care if I damage them as I am only after the copper. thanks in advance. adam Years ago I worked at a company that rewound electric motors. The way the guys in the motor shop removed the old windings was to slice off all the loops on one end then pull the windings out. You might be able to slice off the small loops with a Dremel tool equipped with a cut off wheel. Flush cutters may also work for the small motors. TDD Lots easier if you heat them up first. We used an electric oven. Get them as hot as you can and the windings will come out. Many newer motors have Aluminum windings. Check first or you'll waste a lot of time. Al Chuckle. Don't inhale the fumes from heated-up old electronics. That is why most 'demanufacturing' operations are offshore now- they violate US smog and OSHA laws. Among the tree-huggers, especially those in the countries where the operations are, it is getting to be a bit of a scandal, the Evil Western Rich Countries offloading hazardous materials to countries not able to properly handle them, and too poor to be picky about it. They sorta have a point. Seriously, the outgassing from some of those remelted potting compounds is nasty stuff. -- aem sends... Back then, the motor shop at the company had a Trico vat. Trichloroethylene in the vat was heated producing a heavy vapor that would eat just about anything off the motor housings when they were dipped into the tank. It was quite amazing to see the stuff running off the stators when the hot vapor hit them. It worked so well it was banned then replaced by something else that was later banned because it killed helpless little ozones and I don't know what in the hell is being used now. Now Trichloroethylene is on the way back, strange world. TDD Ever wonder why all the ma'n'pa dry cleaning shops went away? A real close cousin to Trike is what was used for dry cleaning. You used to be able to buy little cans in the grocery stores. Powerful stuff, but the possible downsides are pretty extreme. Who knew? -- aem sends... |
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