Dissimilar metal joint product and joining method therefor
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United States of America Patent
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Jun 28, 2011
Issued Date -
N/A
app pub date -
Mar 28, 2008
filing date -
Mar 29, 2007
priority date (Note) -
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Abstract
of the pure titanium material, while rotating at least one of the joining faces for conducting frictional pressure welding, applying a specified upset force thereto to compress thereof, after the start of deceleration of the rotation, in a period where peripheral velocity in the outermost periphery of the rotation in the joining face is not less than 0.5 m/sec. A reaction layer structure is formed at the joint by the compressive force induced by the upset force and by the rotational force of decelerating rotation.
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