Title:
上向き突き合わせ溶接方法及び上向き突き合わせ溶接台車
Document Type and Number:
Japanese Patent JP7185192
Kind Code:
B2
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:
Shoichi Nonomura
Satoshi Yamanaka
Hidetaka Hayakawa
Satoshi Yamanaka
Hidetaka Hayakawa
Application Number:
JP2020546786A
Publication Date:
December 07, 2022
Filing Date:
August 16, 2019
Export Citation:
Assignee:
Ihi Co., Ltd.
International Classes:
B23K9/02; B23K9/12; B23K9/16; B23K9/235; B23K37/02
Domestic Patent References:
| JP2187272A | ||||
| JP694076B2 | ||||
| JP2006263734A | ||||
| JP2007322345A | ||||
| JP2017524541A | ||||
| JP9141438A |
Foreign References:
| WO2020054310A1 |
Attorney, Agent or Firm:
Koji Nagato