Title:
WELDING METHOD AND DEVICE FOR AUTOMATIC NARROW GAP TIG WELDING BASED ON PENDULUM-LIKE MOVEMENT OF WELDING TORCH
Document Type and Number:
WIPO Patent Application WO/2020/019576
Kind Code:
A1
Abstract:
A welding method and device for automatic narrow gap TIG welding based on pendulum-like movement of a welding torch. In the method, an oscillation radius of a tungsten electrode is decreased to increase an oscillation amplitude of the tungsten electrode, thereby increasing an included angle (A2) between the tungsten electrode and an inclined sidewall of a gap, and increasing a height difference (B1) between a tip of the tungsten electrode at a central position of the gap and extreme positions at both sides of the gap, without requiring modification of the gap. The device comprises an oscillation assembly. A connection member (4) is provided between an oscillating shaft (6) of the oscillation assembly and a welding torch (1) of the tungsten electrode. A clamp-connection portion A (3) of the connection member (4) and a clamp-connection point of the welding torch (1) of the tungsten electrode are positioned outside of a virtual extension line of an axis of the oscillating shaft (6).
Inventors:
QU BO (CN)
WANG JIANJUN (CA)
JIANG YALIN (CA)
WANG JIANJUN (CA)
JIANG YALIN (CA)
Application Number:
PCT/CN2018/114860
Publication Date:
January 30, 2020
Filing Date:
November 09, 2018
Export Citation:
Assignee:
QU BO (CN)
WANG JIANJUN (CA)
JIANG YALIN (CA)
WANG JIANJUN (CA)
JIANG YALIN (CA)
International Classes:
B23K9/167; B23K9/32
Foreign References:
| CN108746942A | 2018-11-06 | |||
| CN104128697A | 2014-11-05 | |||
| CN101767242A | 2010-07-07 | |||
| CN104289799A | 2015-01-21 | |||
| CN105834554A | 2016-08-10 | |||
| CN201493625U | 2010-06-02 | |||
| JPS5536104A | 1980-03-13 |
Attorney, Agent or Firm:
XI'AN XINSIWEI PATENT AND TRADEMARK AGENCY CO., LTD (CN)
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