Electric heating – Metal heating – By arc
Reexamination Certificate
2005-07-19
2005-07-19
Stoner, Kiley S. (Department: 1725)
Electric heating
Metal heating
By arc
C228S255000, C228S248100
Reexamination Certificate
active
06919534
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 cap15afusion area extends past the heat affected area13that lies outside groove11,and 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.1(B).
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Komai Nobuyoshi
Masuyama Fujimitsu
Nishi Fumio
Ukeguchi Yasuhiro
Mitsubishi Heavy Industries Ltd.
Stoner Kiley S.
Tran Len
Wenderoth , Lind & Ponack, L.L.P.
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