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Narrow-gap TIG welding device

A welding device and narrow gap technology, applied in welding equipment, arc welding equipment, manufacturing tools, etc., can solve the problems that it is difficult to ensure the full fusion of the side wall of the narrow gap groove, and the effective heating area of ​​the welding arc is small, so as to increase the tungsten electrode The effect of carrying current capacity, expanding arc shape, and strengthening radial flow strength

Pending Publication Date: 2020-10-16
GUANGDONG PROVINCIAL INST OF WELDING TECH GUANGDONG PROVINCIAL ACADEMY OF UKRAINE
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Problems solved by technology

[0003] In view of the above problems, the object of the present invention is to provide a narrow gap TIG welding device, which can effectively solve the technical problems in the prior art that the effective heating area of ​​the welding arc is small and it is difficult to ensure sufficient fusion of the side wall of the narrow gap groove

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Embodiment Construction

[0022] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying Describes, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and operate in a specific orientation, and therefore should not be construed as limiting the invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance.

[0023] In the description of the present invention, it should be noted that unless otherwi...

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Abstract

The invention discloses a narrow-gap TIG welding device which comprises a narrow-gap welding gun, a first gas supply device and a TIG welding power source, wherein the narrow-gap welding gun comprisesa gun body and a hollow tungsten electrode; a cavity is arranged in the gun body; the gun body is provided with a first end part and a second end part which are oppositely arranged; a first gas inletis formed at the first end part; a nozzle is formed at the second end part; the hollow tungsten electrode is arranged in the cavity in the axial direction of the gun body; one end of the hollow tungsten electrode penetrates through the nozzle; the other end of the hollow tungsten electrode communicates with the first gas inlet; the first gas inlet is connected with the first gas supply device; the negative pole of the TIG welding power source is connected with the gun body; and the positive pole of the TIG welding power source is connected with a to-be-welded workpiece. Through the narrow-gapTIG welding device, the problem that in the prior art, the effective heating area of a welding arc is small and the full fusion of the narrow-gap groove side wall is difficult to guarantee can be effectively solved.

Description

technical field [0001] The invention relates to the technical field of welding equipment, in particular to a narrow gap TIG welding device. Background technique [0002] When welding thick-walled structures, compared with large-angle V-shaped groove welding, narrow-gap welding has many advantages such as high welding efficiency, less filling material, low heat input and small deformation due to the use of narrow and deep small-angle grooves. , has good application prospects in the field of thick-walled structure manufacturing. However, unlike the traditional V-groove located below the arc, the side wall of the narrow gap groove is almost parallel to the central axis of the arc, so that the arc cannot directly heat the side wall of the groove. In addition, the heat of the conventional arc is Gaussian distributed, the heat distribution around the arc is low, the effective heating area is small, and it is difficult to ensure the full fusion of the side wall of the narrow gap g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/167
CPCB23K9/167
Inventor 徐望辉余陈罗兵兵黎振龙
Owner GUANGDONG PROVINCIAL INST OF WELDING TECH GUANGDONG PROVINCIAL ACADEMY OF UKRAINE
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