发明名称 Press-forming tailored blank material excellent in formability and production method therefor
摘要 There is provided a tailored blank article for press forming, the article having an excellent formability and comprising multiple different plates of different thickness, which can evade a break of a low strength plate (or low-thickness plate) due to strength rate-determining is provided in press forming.The tailored blank article for press forming, having an excellent formability and comprising two or more kinds of raw plates, continuously welded together, each having a different tensile strength, is characterized in that a ratio (n1/n2) of a work hardening property value (n1) of a higher tensile strength plate and a work hardening property value (n2) of a lower tensile strength plate is set to be 0.75 or more and 3.8 or less.
申请公布号 US6866942(B1) 申请公布日期 2005.03.15
申请号 US20030362459 申请日期 2003.06.11
申请人 NIPPON STEEL CORPORATION 发明人 HASHIMOTO KOJI;KURIYAMA YUKIHISA;YOSHIDA TORU;MIYAZAKI YASUNOBU
分类号 B21D22/02;B21D22/20;B32B15/01;B32B15/18;B32B15/20;(IPC1-7):B21D22/02 主分类号 B21D22/02
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