Metal treatment – Process of modifying or maintaining internal physical... – Producing or treating layered – bonded – welded – or...
Reexamination Certificate
2011-01-11
2011-01-11
Yee, Deborah (Department: 1793)
Metal treatment
Process of modifying or maintaining internal physical...
Producing or treating layered, bonded, welded, or...
C148S534000, C148S537000, C148S531000, C148S533000, C148S635000, C428S653000, C428S659000
Reexamination Certificate
active
07867344
ABSTRACT:
A method is proved for hot pressing hot rolled steel sheet, cold rolled steel sheet, Al-based plated steel sheet or Zn-based plated steel sheet, where the hot pressed sheet can exhibit a strength of at least about 1200 Mpa, and my be prevented from exhibiting hydrogen embrittlement. The steel sheet may include between about 0.05 to 0.5 wt % C, and/or it may be plated with an Al-based or Zn-based plating material. The steel sheet may be heating to a temperature greater than an Ac3temperature and not more than about 1100° C. before pressing. An atmosphere can be provided during heating which contains not more than about 6 vol % of hydrogen and a dew point of not more than about 10° C. The exemplary methods may be used to form high strength parts which may be used, e.g., in automobiles.
REFERENCES:
patent: 3386863 (1968-06-01), Rowe
patent: 7074497 (2006-07-01), Suzuki et al.
patent: 0522501 (1993-01-01), None
patent: 1041167 (2000-10-01), None
patent: 1143029 (2001-10-01), None
patent: 1233847 (1971-06-01), None
patent: 1532641 (2008-11-01), None
patent: 358000315 (1983-01-01), None
patent: 11-333530 (1999-12-01), None
patent: 2000-54161 (2000-02-01), None
patent: 2002282951 (2002-10-01), None
patent: 2002339054 (2002-11-01), None
patent: 2003-073774 (2003-03-01), None
patent: 2003138343 (2003-05-01), None
patent: 2003181549 (2003-07-01), None
patent: 2004124221 (2004-04-01), None
patent: WO97/40196 (1997-10-01), None
Machine-English translation of Japanese patent 2003-181549, Maki Jun et al., Jul. 2, 2003.
Machine-English translation of Japanese patent 2003-073774, Imai Kazuhito et al., Mar. 12, 2003.
English language European Search Report for European Application No. EP 05 76 6503 dated Jun. 18, 2008.
English language European Official Communication dated Jun. 24, 2009 for European No. 05766503.6.
Corresponding Chinese Office Action dated Nov. 9, 2007 for application No. 200580023694X.
European Official Communication dated Oct. 26, 2010 for European application No. 05766503.6.
Abe Masayuki
Fujita Norihiro
Kusumi Kazuhisa
Maki Jun
Nakajima Shinya
Dorsey & Whitney LLP
Nippon Steel Corporation
Yee Deborah
LandOfFree
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