Magnetic core formed from laminations

Details Magnetic core formed from laminations Magnetic core formed from laminations

1978-09-14

1980-08-12

Powell, William A.

Radiation imagery chemistry: process, composition, or product th

Imaging affecting physical property of radiation sensitive...

Making named article

29609, 430323, 1566611, 156272, 156264, 1563069, C23F 102, B44C 122, H01F 302, H01F 4102

Patent

active

042171687

ABSTRACT:
A method of bonding laminations of a magnetic core is disclosed in which photo-resist material consisting of a co-polymer is applied as a film to a sheet of magnetic material to define lamination shapes to enable the laminations to be formed by etching. The film of photo-resist material on the laminations is then utilized to bond the laminations together in a stack. In order to permit the core to operate at temperatures higher than the softening temperature of the photo-resist material, the bonded stack is irradiated to cause changes to the bonding material such that the material does not soften at the operating temperature of the core.

REFERENCES:
patent: 2998583 (1961-08-01), Worcester
patent: 3436814 (1969-04-01), Fuller et al.
patent: 3620886 (1971-11-01), Sims et al.
patent: 3894163 (1975-07-01), Broyde
patent: 3956043 (1976-05-01), Zahir et al.

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