Title:
溶接構造および弁装置
Document Type and Number:
Japanese Patent JP6900348
Kind Code:
B2
Abstract:
The present invention provides a welding structure and a valve device that can prevent welding cracks in a welding portion between dissimilar metal materials and improve welding durability. The mutually melt-solidified portions (14) of the flange members (12, 13) and the formed bellows (11) are mainly composed of dissimilar metal materials of austenite phase. The flange members (12, 13) are provided with protruding connecting portions (15) having a first surface (15a) and a second surface (15b) on the opposite side thereof, and the formed bellows (11) has a plate-like welded portion (11a) along the first surface (15a) of the connection portion (15). The melt-solidified portion (14) is provided at the front end portion of the connecting portion (15) and the welded portion (11a) and is formed to have a thickness dimension of more than the thickness of the front end side of the connection portion (15) and the welded portion (11a). The diameter of the cross section is round.
Inventors:
Minamihasama Kazunori
Muroya Yusei
Fumio Kanasaki
Keisuke Murata
Muroya Yusei
Fumio Kanasaki
Keisuke Murata
Application Number:
JP2018098684A
Publication Date:
July 07, 2021
Filing Date:
May 23, 2018
Export Citation:
Assignee:
Saginomiya Co., Ltd.
International Classes:
B23K9/00; B23K9/02; F16K41/10
Domestic Patent References:
| JP4105662U | ||||
| JP2142691A | ||||
| JP5261531A | ||||
| JP58102879U | ||||
| JP58107293A | ||||
| JP2002286146A |
Foreign References:
| WO2012147416A1 | ||||
| WO2014054745A1 | ||||
| CN103672191A | ||||
| US5375854 |
Attorney, Agent or Firm:
Fumio Takino
Toshiaki Tsuda
Yasuhiro Fukuda
Toshiaki Tsuda
Yasuhiro Fukuda