Method for producing metal member
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United States of America Patent
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Apr 14, 2020
Grant Date -
Mar 1, 2018
app pub date -
Apr 15, 2015
filing date -
Apr 15, 2015
priority date (Note) -
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status (Latency Note)
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Abstract
The method includes a step of preparing a first member made of a first metal and a second member made of a second metal having a smaller deformation resistance than the first metal, and a step of joining the first member and the second member. The step of joining includes a step of heating the first member and the second member by relatively rotating the first member and the second member, while pressing the first member and the second member against each other, without changing a relative positional relationship therebetween, and a step of cooling the first member and the second member heated, while being pressed against each other. In a first contact surface which is a surface of the first member coming into contact with the second member, a recess is formed so as to include a region intersecting the axis of rotation.
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