Method of manufacturing a structural automotive part made from a rolled Al—Zn alloy
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United States of America Patent
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Nov 15, 2016
Grant Date -
Aug 22, 2013
app pub date -
Nov 2, 2011
filing date -
Nov 5, 2010
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Abstract
A method of manufacturing a formed aluminum alloy structural part or a body-in-white (BIW) part of a motor vehicle. The method includes: providing a rolled aluminum sheet product wherein the aluminum alloy is an AA7000-series aluminum alloy and has a gauge in a range of 0.5-4 mm and is subjected to a solution heat treatment and has been cooled, forming the aluminum alloy sheet to obtain a three-dimensional formed part, heating the three-dimensional formed part to at least one pre-ageing temperature between 50-250° C., and subjecting the formed and pre-aged motor vehicle component to a paint bake cycle.
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