Method of manufacturing preliminary formed body and axisymmetrical component
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United States of America Patent
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Apr 28, 2020
Grant Date -
Feb 16, 2017
app pub date -
Apr 7, 2015
filing date -
Apr 21, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
A method of manufacturing a preliminary formed body includes an ironing step and a thickening step. In the ironing step, a predetermined range of a plate is formed into a tapered shape in such a manner that while rotating the plate, a transform target portion of the plate is locally heated by induction heating, and a processing tool is pressed against the transform target portion. In the thickening step, a peripheral portion that is a distal end of the tapered shape of the plate is expanded inward in such a manner that while rotating the plate, the peripheral portion is locally heated, and a forming roller is pressed against the peripheral portion to push the peripheral portion in a direction orthogonal to a thickness direction of the peripheral portion.
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