Secondary gas protection device for narrow-gap MAG/MIG automatic welding

A gas protection device and automatic welding technology, which is applied in the direction of welding protection devices, welding equipment, welding accessories, etc., can solve the problems of reduced protection effect, unfavorable reduction of welding production costs, and increase of production costs, so as to reduce operation and maintenance costs, The effect of eliminating welding porosity defects and avoiding failure
CN114654055APending Publication Date: 2022-06-24武汉纳瑞格智能设备有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
武汉纳瑞格智能设备有限公司
Publication Date
2022-06-24

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Abstract

The invention discloses a narrow gap MAG / MIG automatic welding secondary gas protection device which comprises a welding gun seat and a narrow gap welding gun, the narrow gap welding gun is fixed to the welding gun seat, the narrow gap welding gun is sequentially provided with a device body, a uniform flow filter screen pipe, a filter screen pipe protection structure and a flow limiting guide groove, and the device body comprises a front device body and a rear device body. The upper part of each rectangular cuboid structure is provided with a mounting structure of a uniform flow filter screen pipe, the middle part of each rectangular cuboid structure is provided with a protection structure of the filter screen pipe, and the lower part of each rectangular cuboid structure is provided with a flow limiting guide groove. The secondary protection device is located at a low set working temperature for a long time, and is stable, reliable and long in service life; the secondary protection device is always at a lower working temperature, so that spatter cannot be welded with the device and is extremely easy to remove; the filter screen pipe is permanently free of splashing deposition, protection on a high-temperature welding area is extremely reliable, and the defect of welding air holes caused by splashing deposition of the filter screen pipe is completely eradicated.
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Description

technical field

[0001] The invention belongs to the technical field of welding, and in particular relates to a secondary gas protection device for automatic welding of narrow gap MAG / MIG. Background technique

[0002] Secondary gas shielding is a unique application under the condition of narrow gap gas shielded welding, which directly determines the weld quality and reliability of the arc ignition and arc extinguishing end, especially the weld quality and reliability of the secondary cover welding layer and the cover welding layer. This secondary gas shielding technology is slightly defective, and the probability of porosity defects in the weld is high.

[0003] In the development and application of narrow-gap gas shielded welding for more than half a century, the mature secondary protection technologies formed are limited, and there are basically the following types: one is the multi-layer filter uniform flow technology, and the other is the plate-type porous uniform flow t...

Claims

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