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If you have a question regarding coaxial, telephone, and building wire, power cable, insulation, extrusion, bunching, stranding, braiding, etc. post it here.
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TOPIC: Need supportive information

Re: Need supportive information 2 years 8 months ago #436

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.

rb
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Re: Need supportive information 2 years 8 months ago #437

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
Principal
Stewart-Hay Associates
www.Stewart-Hay.com
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Re: Need supportive information 2 years 8 months ago #438

Peter,

Here are two links to Ultrasonic wire cleaning.

www.bransoncleaning.com/industry_wire_cleaning.asp

www.hielscher.com/ultrasonics/wire_01.htm

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.

Richard
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