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8 years 4 months ago #436 by Archived Forum Admin
Peter, Martin.
some of the aluminum magnet wire producers use an ultrasonic wire cleaner mounted between the bare wire pay off and the pre-annealer.


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8 years 4 months ago #437 by Archived Forum Admin
Thanks Spectre07,

I suspect that this ultrasonic cleaning process you described was relatively slow when compared to extrusion speeds. I also wonder what solvent you were using in the ultrasonic bath to clean the wire. Please advise.

Best Regards,
Peter J. Stewart-Hay
Stewart-Hay Associates

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8 years 4 months ago #438 by Archived Forum Admin

Here are two links to Ultrasonic wire cleaning.



Neither of these look like what was at Westinghouse in Jeffereson City MO about 30 years ago (boy do I feel old!!!)

That unit was a made up of some stainless steel pipes about 8 inches in diameter and about 5 feet long. There was a tube for each wire. The entrance and exit was reduced so that the opening was not much larger than the wire size. I think it might have had steam piped into it but I don’t remember.

You are right about the speeds, size for size, not being as fast as extruding wire. If you were making film coated magnet wire that was 18 awg or about 1 mm, there was a time when you would be lucky if you were operating at 20-30 meters/minute. But since the typical system had 16 to 24 lines, the cumulative speed and out put was significant. So a 20 line system would be cumulatively producing wire at about 600 meters/minute which is comparable to extruding. The major difference is that you could be making a couple of different sizes at the same time and putting them on different size spools too.

Additionally film insulated wire produced a coating that was very thin and extrusion does not result in a similar product. There has been work on extruding magnet wire but it is not the same product as film insulated wire and the thermal applications are limited.

I ave lots of info in boxes. As I clean out my garage I will probably find info.


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