METHOD OF PRODUCING A PAINTED STEEL SHAFT PRODUCT OF HIGH STRENGTH
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United States of America Patent
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Issued Date -
Oct 28, 2010
app pub date -
Nov 11, 2008
filing date -
Nov 26, 2007
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A high-strength product of sheet steel is produced in the press hardening process. A blank is heated to reach austenite structure and hot-stamped in a pair of cooled tools. The product is kept in the tools to rapidly be cooled to harden with the tools as a fixture. The blank has a surface of black oxide before it is shaped and the shaped product is painted directly on the black surface.
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