Method for manufacturing and amorphous metal core for a transfor

Details Method for manufacturing and amorphous metal core for a transfor Method for manufacturing and amorphous metal core for a transfor

1991-07-05

1992-08-04

Hall, Carl E.

Metal working

Method of mechanical manufacture

Electrical device making

29606, 336213, 336217, 336234, H01F 4102

Patent

active

051347717

ABSTRACT:
In this method of manufacturing an amorphous metal transformer core, there is provided a core form that comprises sections of amorphous metal strip wrapped about the core window, the strip sections having edges at laterally opposite sides thereof and the core form having at its laterally opposed sides a pair of faces where the edges of the strip sections are located. This core form is subjected to an annealing operation to relieve stresses therein. Then, the strip sections are displaced with respect to each other in a first lateral direction to develop a telescoping relationship between juxtaposed strip sections that disrupts short circuiting adhesions between juxtaposed strip sections that had developed during the annealing step. Thereafter, the strip sections are returned in a lateral direction opposite to the first lateral direction to restore their edges to substantially their normal, or original, positions.
Disrupting the short circuiting adhesions results in reduced core loss in the final product, i.e., an amorphous metal transformer core.

REFERENCES:
patent: 4615106 (1986-10-01), Grimes et al.
patent: 4724592 (1988-02-01), Hunt et al.
patent: 4734975 (1988-04-01), Ballard et al.
patent: 4847987 (1989-07-01), Ballard

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