Method of producing press-formed product
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United States of America Patent
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Aug 18, 2020
Grant Date -
Mar 28, 2019
app pub date -
May 17, 2017
filing date -
May 18, 2016
priority date (Note) -
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Abstract
A method of producing a press-formed product includes a steel plate heating step, a hot forging step and a hot stamping step. In the steel plate heating step, a steel plate is heated to 950° C. or more. In the hot forging step, the heated steel plate is forged to form a varying-thickness steel plate. In the hot stamping step, the heated varying-thickness steel plate is subjected to press-working by a press tooling to form a press-formed product, and the press-formed product that is formed is cooled inside the press tooling. Thus, a press-formed product that has high strength and for which a reduction in weight is possible can be produced.
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