Title:
RAPID ELECTRO-GAS WELDING METHOD WITH SWING ARC, AND WELDING TORCH THEREWITH AND APPLICATION THEREOF
Document Type and Number:
WIPO Patent Application WO/2023/169088
Kind Code:
A1
Abstract:
A rapid electro-gas welding method with a swing arc, the method comprising the following steps: ① making, by means of a large-angle bending conductive rod mechanism (1) with a welding torch with a bending angle β, a welding wire (3) pass through an arc swing mechanism (2), and then making same extend out of a central hole at the lower end of the large-angle bending conductive rod mechanism (1); ② driving, by means of an arc motion controller (13), a welding torch swing mechanism (14), such that the welding torch drives an arc (6) at the end of the welding wire (3) to linearly swing back and forth (11), in a plate thickness direction, in a groove (9) to be welded; and driving, by means of the arc motion controller (13), the arc swing mechanism (2) of the welding torch to rotate the large-angle bending conductive rod mechanism (1), so as to drive the arc (6) to perform a left-right circular arc swing (10) around a center line (2a) of the welding torch, and correspondingly making same perform an equal-amplitude equal-frequency or equal-amplitude variable-frequency swing, with a constant arc swing angle and a variable arc swing frequency, in an I-shaped narrow gap groove (901), or making same perform a variable-amplitude equal-frequency or variable-amplitude variable-frequency swing, with arc swing angles larger on a front side and smaller on a rear side and a variable arc swing frequency, in a V-shaped groove (902); and ③ driving, by means of a dragging mechanism, the welding torch and the welding torch swing mechanism (14) to move upwards together at a welding speed V w, such that a weld pool (7) is forced to solidify and form under the action of a back liner (8) and a water-cooled copper slide block (5). By means of the method, rapid electro-gas welding with a swing arc, which has a variable swing angle and a variable swing frequency, can be achieved in the I-shaped narrow gap groove or the V-shaped groove. The present invention further relates to a welding torch and an application of the method.
Inventors:
WANG JIAYOU (CN)
ZHU JIE (CN)
WANG TIANWEI (CN)
WANG YIHAO (CN)
JI KANG (CN)
WANG BIAO (CN)
JIANG YUQING (CN)
XU GUOXIANG (CN)
ZHU JIE (CN)
WANG TIANWEI (CN)
WANG YIHAO (CN)
JI KANG (CN)
WANG BIAO (CN)
JIANG YUQING (CN)
XU GUOXIANG (CN)
Application Number:
PCT/CN2023/072541
Publication Date:
September 14, 2023
Filing Date:
January 17, 2023
Export Citation:
Assignee:
UNIV JIANGSU SCIENCE & TECH (CN)
International Classes:
B23K9/32; B23K9/095; B23K9/28
Domestic Patent References:
| WO2018037754A1 | 2018-03-01 |
Foreign References:
| CN114535745A | 2022-05-27 | |||
| CN115464234A | 2022-12-13 | |||
| CN102275029A | 2011-12-14 | |||
| CN107921569A | 2018-04-17 | |||
| CN103264212A | 2013-08-28 | |||
| CN110369829A | 2019-10-25 |
Attorney, Agent or Firm:
NANJING JINGWEI PATENT & TRADEMARK AGENCY CO., LTD (CN)
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