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:
Jul. 19, 2005
Filed:
May. 08, 2002
Nobuyoshi Komai, Nagasaki, JP;
Fujimitsu Masuyama, Nagasaki, JP;
Yasuhiro Ukeguchi, Nagasaki, JP;
Fumio Nishi, Nagasaki, JP;
Nobuyoshi Komai, Nagasaki, JP;
Fujimitsu Masuyama, Nagasaki, JP;
Yasuhiro Ukeguchi, Nagasaki, JP;
Fumio Nishi, Nagasaki, JP;
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Abstract
A welding method and a welded joint for high strength, temperature resistant steels produce the same strength as the base metal in the welded joint, thereby resolving strength problems in the heat affected area by making a simple change to the welding method. Additionally, this advantage is extended to high strength ferrite heat resistant steels by providing a multi-pass buildup welding method for such high strength ferrite heat resistant steels. A multi-layered capfusion area extends past the heat affected areathat lies outside grooveand the surface area of the foregoing extension that is required to impart the same level of creep strength as is inherent in the base metal is based on the relationship between the groove width and the base metal thickness shown as hatched area in FIG.(B).