Method of heat-treating a thin sheet coated with ZnAL by hot dip galvanization
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United States of America Patent
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May 15, 2001
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N/A
app pub date -
Jun 2, 1999
filing date -
Nov 9, 1996
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Expired
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Abstract
A thin sheet is coated by hot dip galvanization with a zinc based alloy comprising 3.5% to 15% by weight of aluminum. Immediately after solidification of the coating, the thin sheet is heated for 2 to 10 seconds to a temperature 20 to 100.degree. C. above the melting point of the coating. The thin sheet is then cooled to room temperature.
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