The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 11, 2005
Filed:
Jan. 02, 2003
Tomoaki Ikeda, Kashima, JP;
Akio Yamamoto, Kashima, JP;
Shigemichi Yamauchi, Kashima, JP;
Nobuaki Takahashi, Kashima, JP;
Masahiko Hamada, Kobe, JP;
Tomoaki Ikeda, Kashima, JP;
Akio Yamamoto, Kashima, JP;
Shigemichi Yamauchi, Kashima, JP;
Nobuaki Takahashi, Kashima, JP;
Masahiko Hamada, Kobe, JP;
Sumitomo Metal Industries, Ltd., Osaka, JP;
Abstract
A welding method includes performing welding to form a weld metal consisting essentially of, in mass %, and a remainder of Fe and unavoidable impurities. The amounts of impurities are P: at most 0.03%, S: at most 0.03%, N: at most 0.01%, Ca or Mg: at most 0.005%. The value of Pcm expressed by the following Equation (3) is in the range of 0.23-0.35%, and the time T until the weld metal is cooled to 100° C. after welding satisfies the following Equation (1):(seconds)≧exp(7.0×+4.66)  Equation (1)/60  Equation (2)(mass %)=C+Si/30+Mn/20+Cu/20+Ni/60+Cr/20+Mo/15+V/10+5B  Equation (3)