Wenderoth, Lind & Ponack, L.L.P.
Ni-based alloy high-chrome steel structure and manufacturing method of the same
There are provided an Ni-based alloy high-chrome steel structure and its manufacturing method capable of joining Ni-based alloys and high-chrome steels by welding, and performing suitable heat treatment, thereby maintaining the strength in the joints. In a manufacturing method of a structure formed by joining together at least two first members formed from Ni-based alloys by welding, and joining a second member formed from high-chrome steels to a member where the first members have been joined together, the manufacturing method includes the steps: joining together the at least two first members formed from Ni-based alloys by welding; performing first-stage aging treatment on a welded joint between the first members, and then, joining the second member formed from high-chrome steels to the member where the first members have been joined together by welding; and then, performing second-stage aging treatment on the welded joint between the first members, and performing heat treatment after welding on a welded portion between the first members and the second member.
Mitsubishi Heavy Industries, Ltd.
C C B C B C C B B C B C F B C C C C B C F B
C21D C22C B23K C22C B23K C22C C22C B23K B23K C22C B23K C22F F05D B23K C22C C22C C22C C22C B23K C21D F01D B23K
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Takashi Kenji Yuichi Yoshikuni Shin Yoshinori Takashi Ryuichi Tatsuaki
Nakano Kawasaki Hirakawa Kadoya Nishimoto Tanaka Shige Yamamoto Fujikawa