Hot-formed previously welded steel part with very high mechanical resistance and production method
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United States of America Patent
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Feb 16, 2021
Grant Date -
Jan 29, 2015
app pub date -
Jul 23, 2012
filing date -
Jul 26, 2011
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Abstract
The invention relates principally to a welded steel part with a very high mechanical strength characteristics obtained by heating followed by hot forming, then cooling of at least one welded blank obtained by butt welding of at least one first and one second sheet consisting at least in part of a steel substrate and a pre-coating which is constituted by an intermetallic alloy layer in contact with the steel substrate, topped by a metal alloy layer of aluminum or aluminum-based alloy.
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