Stock material or miscellaneous articles – All metal or with adjacent metals – Intermediate article
Reexamination Certificate
2005-03-15
2005-03-15
Zimmerman, John J. (Department: 1775)
Stock material or miscellaneous articles
All metal or with adjacent metals
Intermediate article
C428S683000, C428S600000, C148S524000, C148S534000, C228S155000, C219S136000
Reexamination Certificate
active
06866942
ABSTRACT:
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
2) 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.
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Hashimoto Koji
Kuriyama Yukihisa
Miyazaki Yasunobu
Yoshida Toru
Nippon Steel Corporation
Wenderoth , Lind & Ponack, L.L.P.
Zimmerman John J.
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