Title:
UPWARD BUTT WELDING METHOD AND UPWARD BUTT WELDED BOGIE
Document Type and Number:
WIPO Patent Application WO/2020/054311
Kind Code:
A1
Abstract:
In the present invention, after pretreatment including oxide film removal and degreasing at a butt portion between bottom panels W, W is performed, the diameter D of a welding torch 6 to be used is determined on the basis of the width of a V bevel Wv at the butt portion, the dewpoint temperature of a shielding gas G to be fed to the butt portion is set to -45°Cdp or lower, and a welding wire 8 is fed to the welding torch 6 and upward welding is performed while the distance Z between the welding torch 6 and the bottom panel W and the flow rate of the shielding gas G are each maintained at a predetermined value calculated in advance. Upward butt welding with respect to an aluminum alloy can be performed without causing welding defects, and in addition, upward butt welding with respect to the aluminum alloy can be automated.
Inventors:
NONOMURA SHOICHI (JP)
YAMANAKA SATOSHI (JP)
HAYAKAWA HIDEKATA (JP)
YAMANAKA SATOSHI (JP)
HAYAKAWA HIDEKATA (JP)
Application Number:
PCT/JP2019/032091
Publication Date:
March 19, 2020
Filing Date:
August 16, 2019
Export Citation:
Assignee:
IHI CORP (JP)
International Classes:
B23K9/02; B23K9/12; B23K9/16; B23K9/23; B23K9/235; B23K37/02
Foreign References:
| JPS6272477A | 1987-04-03 | |||
| JP2001179448A | 2001-07-03 | |||
| JPS61269982A | 1986-11-29 | |||
| JPS55112178A | 1980-08-29 | |||
| JPS5142038A | 1976-04-09 | |||
| JPH07266037A | 1995-10-17 |
Attorney, Agent or Firm:
NAGATO Kanji (JP)
Download PDF: