Metal fusion bonding – Process – With pretreating other than heating or cooling of work part...
Patent
1993-03-31
1994-08-16
Heinrich, Samuel M.
Metal fusion bonding
Process
With pretreating other than heating or cooling of work part...
2281791, 219 68, B23K 100
Patent
active
053379411
ABSTRACT:
The present invention provides a magnet wire having a high heat resistance, a conductor, and an inner layer formed by baking a first resin coating covering the outer surface of the conductor. The inner layer has a heat resistance which is not lower than 130.degree. C. and is lower than 200.degree. C. An outer layer is formed by baking a second resin coating covering the outer surface of the inner layer, the outer layer having a heat resistance which is not lower than 200.degree. C., the thickness of the lower layer falling within a range of between 0.3 .mu.m and 5 .mu.m and being not larger than 1/3 of the sum of the thicknesses of the outer and inner layers. The present invention also provides a method of removing an insulating covering from a magnet wire having a high heat resistance comprising the steps of: preparing a magnet wire having a high heat resistance, and irradiating an insulating covering of said magnet wire with a converged laser beam having a high energy.
REFERENCES:
patent: 3610874 (1971-10-01), Gagliano
patent: 4815673 (1989-03-01), Wheeler
Electri-onics, Feb. 1985, Laser Wire Stripper Effectively Removes "ML" Polymide for Repeated Solderability.
Higashiura Atsushi
Natsume Yoshitaka
Sano Fumikazu
Tokimori Yoshitaka
Heinrich Samuel M.
Nippondenso Co. Ltd.
The Furukawa Electric Co. Ltd.
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