Press-formed article and method for strengthening the same

Details Press-formed article and method for strengthening the same Press-formed article and method for strengthening the same

1997-06-19

2000-05-09

Yee, Deborah

Metal treatment

Stock

Ferrous

148639, 148644, C21D 900

Patent

active

060598999

ABSTRACT:
A press-formed article has a quenched area and a required strength distribution. The quenched area has a hardness distribution exhibiting a hardness transition which corresponds to the required strength distribution. The press-formed article may include one end portion, the other end portion, and a central area disposed between the one end portion and the other end portion. The quenched area is extended from the one end portion and to the other end portion. The hardness distribution of the quenched area exhibits a condition that hardness is the highest in the central area in such a manner that hardness is gradually decreased from the central area to the one end portion and to the other end portion.

REFERENCES:
patent: 3703093 (1972-11-01), Komatsu et al.
patent: 4010969 (1977-03-01), Cantrell et al.
patent: 5238510 (1993-08-01), Dutton et al.
Patent Abstracts of Japan, vol. 095, No. 002, Mar. 31, 1995, JP 06-330165, Nov. 29, 1994.
Patent Abstracts of Japan, vol. 018, No. 186 (M-1585), Mar. 30, 1994, JP 05-345519, Dec. 27, 1993.
Patent Abstracts of Japan, vol. 016, No. 277 (C-0954), Jun. 22, 1992, JP 04-072010, Mar. 6, 1992.

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