Invention Grant
- Patent Title: Electric resistance welded steel pipe for producing hollow stabilizer, hollow stabilizer, and production methods for same
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Application No.: US16979357Application Date: 2019-03-11
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Publication No.: US11440125B2Publication Date: 2022-09-13
- Inventor: Masatoshi Aratani , Ryoji Matsui , Hiroshi Nakata , Tomonori Kondo , Hiromichi Hori
- Applicant: JFE Steel Corporation
- Applicant Address: JP Tokyo
- Assignee: JFE Steel Corporation
- Current Assignee: JFE Steel Corporation
- Current Assignee Address: JP Tokyo
- Agency: RatnerPrestia
- Priority: JPJP2018-065875 20180329
- International Application: PCT/JP2019/009811 WO 20190311
- International Announcement: WO2019/188224 WO 20191003
- Main IPC: B23K11/093
- IPC: B23K11/093 ; B21B17/14 ; B21C37/08 ; B21D5/10 ; B60G21/055 ; C21D6/00 ; C21D8/10 ; C21D9/08 ; C22C38/00 ; C22C38/02 ; C22C38/04 ; C22C38/06 ; C22C38/22 ; C22C38/24 ; C22C38/26 ; C22C38/42 ; C22C38/50 ; C22C38/54 ; C21D9/50

Abstract:
There are provided an electric resistance welded steel pipe for producing a high strength hollow stabilizer excellent in fatigue resistance and a high strength hollow stabilizer. In an electric resistance welded steel pipe (5) for producing a hollow stabilizer, an internal weld bead cut portion (30) has a three-peak shape and a depth (H) of a trough portion (30a) of the three-peak shape is 0.3 mm or less and an angle (θ) formed by a central portion in the circumferential direction of the trough portion (30a) and the top of right and left peak portions (30b, 30c) located on both the right and left sides of the trough portion (30a) is 160° or more and less than 180°.
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