Method of constructing a magnetic core

Details Method of constructing a magnetic core Method of constructing a magnetic core

1986-04-16

1987-11-10

Sheehan, John P.

Metal treatment

Process of modifying or maintaining internal physical...

Magnetic materials

148121, 24609, C21D 104

Patent

active

047055782

ABSTRACT:
A method of constructing a magnetic core from groups of amorphous metal laminations, with the groups being defined by flattening sheets which are interspersed in a stack of amorphous laminations during a magnetic stress-relief anneal cycle. The stack of laminations is compressed with a pressure of at least about 4 psi, but not enough pressure to metallurgically bond adjacent laminations. The compression step is applied to the stack of laminations at least during the time the stack is at the elevated soaking temperature of the stress-relief anneal cycle. The flattened laminations are used to construct a magnetic core having an improved space factor and reduced sensitivity to core clamping pressures.

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"Utilization of Amorphous Metals in Electric Motors", by L. A. Johnson, U.S. Department of Energy Contract No. W-7405-eng.-26, published Mar. 1984.

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