Method for manufacturing aluminum based alloy-made fastening part and aluminum based alloy-made fastening part
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United States of America Patent
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Jan 3, 2017
Grant Date -
Sep 5, 2013
app pub date -
Nov 10, 2011
filing date -
Nov 10, 2010
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Abstract
By changing the timing of applying a heat treatment, a high-strength aluminum based alloy-made fastening part having an unprecedented tensile strength or other strength property and a method for manufacturing of the same are provided. The method is characterized in that an aluminum based alloy-made material is subjected to a solution treatment and is then age-hardened; work hardening is further applied to a shaft portion by drawing thereof in a heading process; and the shaft portion is thereafter subjected to a process of rolling male threads.
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