Consumable electrode mixed gas protective automated welding method for large-scale thick-walled structural part

An automatic welding and gas mixing technology, applied in welding equipment, welding equipment, auxiliary welding equipment, etc., can solve the problems of high cost, low production efficiency, poor quality of weld joints, etc., to achieve simple operation, reduce labor intensity, reduce The effect of production costs

Inactive Publication Date: 2019-03-19
JIANGXI HONGDU AVIATION IND GRP
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Problems solved by technology

[0004] The purpose of the present invention is to provide a high production efficiency, low cost and technical quality problems such as poor weld joint quality, low production efficiency and high cost, which are greatly affected by human factors during the welding of aviation structural steel structures. Automated welding process with metal mixed gas shielding with better weld joint quality

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  • Consumable electrode mixed gas protective automated welding method for large-scale thick-walled structural part
  • Consumable electrode mixed gas protective automated welding method for large-scale thick-walled structural part
  • Consumable electrode mixed gas protective automated welding method for large-scale thick-walled structural part

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Embodiment Construction

[0030] The present invention is described in detail below in conjunction with accompanying drawing:

[0031] A method for automatic welding of large thick-walled structural parts with mixed gas shielded melting electrode, the method comprising the following steps:

[0032] (A), process the welding part of the structure to be welded to open a U-shaped groove, such as figure 2 ;

[0033] (B) Sandblasting the parts to be welded before welding to remove oil and rust pollutants on the surface of the parts;

[0034] (C) Assemble the parts, the weld joint structure adopts the bottom-lock welding joint method, and the welding repair gap is controlled by the size of the parts themselves, and the assembly method adopts interference fit, such as image 3 ;

[0035] (D) Turn on the power switch of the welding equipment, place the assembled parts to be welded on the welding tool, clamp one end of the part with a three-jaw chuck, and tighten the other end with a cylinder; adjust the ang...

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Abstract

The invention relates to a consumable electrode mixed gas protective automated welding method for a large-scale thick-walled structural part and belongs to the technical field of aviation industry thermal technology. According to the consumable electrode mixed gas protective automated welding method for the large-scale thick-walled structural part, an automated welding manner is adopted; a traditional manual welding operation manner is changed; unsteady factors of people in the welding process are reduced; labor intensity of welders is lowered; welding quality and production efficiency of products are improved; and meanwhile, the production cost is also lowered. In addition, the method is simple and convenient to operate; and consumable materials and equipment needed in the welding processare easy to purchase and achieve.

Description

technical field [0001] The invention relates to an automatic welding method for a large-scale thick-walled structural part under the protection of a molten electrode mixed gas, and belongs to the technical field of thermal technology in the aviation industry. Background technique [0002] In recent years, as some new materials, new structures, and new processes have been widely used in the aviation industry, welding connection technology has become one of the important connection methods in the aviation manufacturing industry. Manual arc welding is widely used in the cabin body. This method not only has a slow welding speed, but also has large dimensional deformation of the parts after welding, making it difficult to guarantee the quality of the weld. The use of MIG shielded welding is an ideal process method. [0003] The molten electrode mixture shielded welding technology is a new type of welding connection technology. This method uses (Ar+CO2) series mixed gas as the sh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/173B23K9/235B23K37/02
CPCB23K9/173B23K9/235B23K37/02
Inventor 余刚涂慧婕易承福傅仁科刘林海胡志鹏许云峰
Owner JIANGXI HONGDU AVIATION IND GRP
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