Novel self-rotating large-current MAG (Magnetic) welding composite nozzle welding gun for removing slag and slag removing method thereof

A high-current, slag-clearing technology, applied in arc welding equipment, electrode accessories, welding equipment, etc., to achieve the effect of prolonging life, prolonging continuous working time, and wide application range

Active Publication Date: 2012-03-28
HARBIN WELDING INST LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] This kind of robotic torch cleaning device is a special equipment separate from the welding torch, with complex structure and high cost

Method used

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  • Novel self-rotating large-current MAG (Magnetic) welding composite nozzle welding gun for removing slag and slag removing method thereof
  • Novel self-rotating large-current MAG (Magnetic) welding composite nozzle welding gun for removing slag and slag removing method thereof
  • Novel self-rotating large-current MAG (Magnetic) welding composite nozzle welding gun for removing slag and slag removing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0046] The welding torch of the present invention is used in the pre-welding process of the spiral pipe production of CNPC Baoshishun Steel Pipe Co., Ltd. The pre-welding of the spiral welded pipe is carried out inside the forming machine for continuous and uninterrupted production. The longer the welding time, the shorter the time for each stop to clean up the spatter, and the higher the production efficiency, especially for small diameter pipes of 508-610mm. Cleaning the torch inside is more difficult.

[0047] Using MAG welding, the main process parameters are as follows:

[0048] Current 650-1000A, voltage 21-23V, welding wire CHW-60C, specification φ3.2, welding speed 3.5-5m / min.

[0049] The continuous welding time of this welding torch is 80-120 minutes, and the slag removal time is about 30 seconds; compared with the original all-copper water-cooled welding torch, the production time of one continuous welding is about 40 minutes, and the slag removal time is 15-20 min...

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Abstract

The invention provides a self-rotating large-current MAG (Magnetic) welding composite nozzle welding gun for removing slag and a slag removing method thereof. The invention aims at solving the slag removal difficulty of the welding gun in large-current MAG welding process and further optimizing a nozzle structure. The invention mainly comprises a welding gun structure which can remove welding spattering slag in a composite nozzle in a self-rotating way as well as a self-rotating slag-removing method of the welding gun. The welding gun structure and the self-rotating slag-removing method are suitable for thick wire large-current MAG welding.

Description

Technical field [0001] The present invention proposes a self-rotating slag-removing high-current MAG welding composite nozzle welding torch and a slag-removing method for the torch, which belong to the field of gas shielded welding welding technology, and in particular relate to the structure of the high-current MAG welding torch and the self-rotating slag-clearing method of the welding torch . Background technique [0002] The most commonly used welding wire for MAG welding is a thin wire below φ1.6mm, and the welding current is below 500A. 2 Or MAG welding will produce a certain amount of spatter. When welding with thick wire above φ3.2mm and high current of 600-1200A, a large amount of spatter can be generated. The spatter sticks to the inner wall of the nozzle and affects the welding stability. The slag (splash) on the inner wall of the nozzle should be cleaned in time during welding. [0003] In addition to using copper nozzles and water-cooled copper nozzles, compos...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K9/16B23K9/26B23K9/32
Inventor 张善保杨战利杨永波郝路平白英赵德民唐麒龙白德滨
Owner HARBIN WELDING INST LTD
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