Method of joining different metal materials by friction welding
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United States of America Patent
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Feb 17, 2004
Issued Date -
N/A
app pub date -
Sep 17, 2002
filing date -
Dec 8, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A rod material made of Ti alloy has a larger diameter portion at the end, which is joined with the end of material made of Ti--Al intermetallic compound, by friction welding, to form a poppet valve for an internal combustion engine. Instead of providing such larger diameter portion, the end of the material made of Ti--Al intermetallic compound may be heated to facilitate joining.
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