Method for manufacturing an amorphous metal core for a transformer that includes steps for reducing core loss
AssigneeGeneral Electric Company
InventorAlbert C. Lee
Life of this patent
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Abstract
This method for making a transformer core comprises the following steps: (a) providing amorphous metal strip material, (b) winding said strip material onto an arbor in superposed layers, thereby forming a multi-layered core form, (c) applying coats of powder to said strip material before the strip material is wound onto the arbor, thereby causing predetermined adjacent ones of said layers by to be separated small distances to reduce the space factor of the core form, and (d) annealing the core form while said powder coatings are present between adjacent layers, thus enabling the powder to lessen the tendency of adhesions to develop between adjacent layers of amorphous metal during annealing.
Claims8
A method of making a transformer core from amorphous metal strip material wrapped about the window of the core, comprising the following steps:
- (a) providing amorphous metal strip material having essentially no insulating coating applied and bonded thereto,
- (b) wrapping said strip material onto an arbor in superposed layers, thereby forming a multi-layered core form,
- (c) applying one or more coats of powder to said strip material before the strip material is wrapped onto the arbor, thereby causing predetermined adjacent ones of said layers to be separated by small distances to control the space factor of said core form,
- (d) annealing said core form while said one or more powder coats are present between adjacent layers, thus enabling said powder to lessen the tendency of adhesions to develop between adjacent layers of amorphous metal during annealing, and
- (e) maintaining said powder coatings substantially unbonded with respect to the underlying amorphous metal strip material during annealing.
Dependencies are inferred from the claim text.