Novel narrow-gap gas metal arc welding gun

A melting electrode gas, shielded welding technology, applied in welding equipment, electrode characteristics, arc welding equipment, etc., can solve the problems of accidental arcing on the side wall, welding torch cooling, and lack of fusion on the side wall, and achieve good welding quality and welding process. Stable, high welding efficiency

Inactive Publication Date: 2012-01-18
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

[0011] The purpose of the present invention is to provide a more stable and reliable new narrow-gap gas shielded welding torch to solve the problem of the lack of fusion of the narrow-gap welding side wall in the prior art, and at the same time solve the problem of welding torch cooling and side wall accidents. arc problem

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  • Novel narrow-gap gas metal arc welding gun

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Embodiment Construction

[0031] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0032] Theoretically, the heat input of narrow gap metal arc welding (NG-GMAW) is between submerged arc welding and argon tungsten arc welding. Makes NG-GMAW very potential. In recent decades, domestic research investment on narrow-gap gas metal shielded welding has been very large. At the same time, the rapid development of machinery manufacturing and control technology has also provided a good opportunity for the breakthrough of NG-GMAW. The present invention is It came into being under the circumstances of such a great opportunity and market demand.

[0033] The invention provides a novel narrow-gap MIG shielded welding torch. The welding torch is flat overall and can work in a narrow space. At the same time, the thickness of the welding torch can be controlled within 10mm according to the limitation of the actual working environment and the processing level. Su...

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Abstract

The invention relates to a novel narrow-gap gas metal arc welding gun, a guide mechanism is arranged on the lower end of a rod assembly, and is inclined relative to the central axis of the rod assembly, and the end of the guide mechanism is provided with a tip. The invention effectively solves the problem of narrow-gap welding that sidewall fusion is defective, and also solves the problems of welding gun cooling and accidental sidewall arcing, and the novel narrow-gap gas metal arc welding gun is flexible and convenient to use, and has the advantages of stability, reliability, higher welding efficiency, better welding quality and more stable welding process. The novel narrow-gap gas metal arc welding gun is suitable for all the fields which have high requirement on welding efficiency, welding quality and welding economy and can use the narrow-gap welding technology, and is applicable to the arc welding of metal materials in the industries of electric power, ships, buildings, transportation and the like, and the advantage is more obvious for the narrow-gap welding of thick-walled members, particularly when the requirement on welding quality and welding efficiency is high.

Description

technical field [0001] The invention relates to the technical field of arc welding, in particular to a novel narrow-gap melting electrode gas-shielded welding torch. Background technique [0002] Commonly used methods for welding thick-walled components are: metal arc welding, electrode arc welding, gas-electric vertical welding, narrow gap welding (including narrow gap submerged arc welding, narrow gap tungsten argon arc welding and narrow gap metal arc welding Wait). Narrow Gap Welding is a multi-layer welding method developed by the Battelle Institute in the United States in 1963 using the existing arc welding method, using I-shaped or U-shaped grooves, and performing 1-2 layers per layer. As the name implies, narrow gap welding is a method of using existing welding methods to make welding in a relatively narrow space. Its characteristics are summarized by foreign scholars as follows: [0003] (1) A special technique utilizing existing arc welding methods; [0004] (2...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/28B23K9/173
Inventor 唐新华左振龙芦凤桂刘霞乔尚飞华学明山珊
Owner SHANGHAI JIAO TONG UNIV
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