Method for making a transformer core comprising amorphous steel

Details Method for making a transformer core comprising amorphous steel Method for making a transformer core comprising amorphous steel

1991-08-14

1994-02-15

Hall, Carl E.

Metal working

Method of mechanical manufacture

Electrical device making

29738, 336213, 336217, 336234, H01F 4102

Patent

active

052855651

ABSTRACT:
This method is practiced by first providing a plurality of spools of amorphous steel strip in each of which the strip is wound in single-layer thickness. Then, in a pre-spooling machine, the single-layer thickness strips are unwound from said plurality of spools and combined to form strip of multiple-layer thickness which is wound onto a plurality of master reels, on each of which the strip is wound in multiple-layer thickness. These master reels are then placed on a plurality of payoffs, and the multiple-layer thickness strip is unwound from these payoffs and combined into a composite strip that has a thickness in strip layers equal to the sum of the strip layers in the combined multiple-layer thickness strips. Then the composite strip is cut into a plurality of sections, or lengths, of composite strip, and with these sections a hollow core form is constructed, which form has a window about which the sections are wrapped.

REFERENCES:
patent: 3049793 (1962-08-01), Cooper
patent: 4413406 (1983-11-01), Bennett et al.
patent: 4734975 (1988-04-01), Ballard et al.
patent: 4741096 (1988-05-01), Lee et al.
patent: 4972573 (1990-11-01), Yamamoto et al.
patent: 5050294 (1991-09-01), Ballard et al.
patent: 5093981 (1992-03-01), Ballard et al.

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