Induction galvannealed electroplated steel strip
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United States of America Patent
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May 14, 1991
Grant Date -
N/A
app pub date -
Aug 5, 1988
filing date -
Aug 5, 1988
priority date (Note) -
Expired
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Abstract
Galvannealed electroplated steel strip. The strip is heated to an alloying temperature of at least about 427.degree. C. using an induction coil operated at a frequency to produce an eddy current penetration depth of one-half the strip thickness. The diffusion temperature and time are controlled to minimize the formation of brittle gamma alloy phases in the zinc/iron alloy coating.
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