PROCESS FOR PRODUCING COMPONENTS HAVING REGIONS OF DIFFERING DUCTILITY
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United States of America Patent
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Issued Date -
Dec 6, 2012
app pub date -
Sep 14, 2010
filing date -
Nov 6, 2009
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Abandoned
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Abstract
The invention relates to a process for producing sheet steel components having regions of differing ductility, in which either a sheet metal plate composed of a hardenable steel alloy is used to produce a component by deep-drawing and the deep-drawn component is then at least partially austenitized by a heat treatment and subsequently quench hardened in a die or the plate is at least partially austenitized by a heat treatment and shaped in the hot state, and is quench hardened during or after this, with the sheet metal plate having a zinc-based cathodic corrosion protection coating, characterized in that in regions of a desired higher ductility of the component, at least one additional sheet is attached to the plate, situated so that during the heat treatment, the plate is heated to a lesser degree there than in the remaining region.
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