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Auxiliary protection gas hood of automatic TIC welder head

A protective gas cover and automatic technology, applied in the direction of providing/removing protective gas devices, welding equipment, welding accessories, etc., can solve the problems of small protection range of welding nozzles, easy oxidation of metal welding, etc., to expand the protection range and avoid The effect of oxidation

Active Publication Date: 2014-07-23
HARBIN TURBINE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention aims to solve the problem that the metal welding in the vicinity of the welding pool is prone to oxidation during the welding process caused by the small protection range of the welding nozzle of the welding machine in the past, and proposes an automatic TIG welding machine head auxiliary protective gas cover

Method used

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  • Auxiliary protection gas hood of automatic TIC welder head

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specific Embodiment approach 1

[0017] Specific implementation mode 1, refer to figure 1 Specifically illustrate the present embodiment, the automatic TIG welding machine head auxiliary shielding gas cover described in the present embodiment, it comprises two air guide pipes 1, top cover 2 and stainless steel shell 4;

[0018] The stainless steel casing 4 is a hollow cylinder, and the cylinder of the stainless steel casing 4 is symmetrically provided with two round holes, and the two air guide tubes 1 respectively pass through the two round holes on the cylinder of the stainless steel casing 4 and connect with the stainless steel casing 4. Welding, and the air duct 1 communicates with the interior of the stainless steel shell 4;

[0019] The top cover 2 is a hollow cylinder, and the top circumference of the cylinder is fixed with an annular outer edge 2-1, the annular outer edge 2-1 is coaxial with the top cover 2, and the circular outer edge 2-1 is coaxial with the top cover 2, and the circular outer edge 2...

specific Embodiment approach 2

[0025] Embodiment 2. This embodiment is a further description of the automatic TIG welding machine head auxiliary shielding gas cover described in Embodiment 1. In this embodiment, it also includes two layers of screens 3, the first screen 3-1 and the second mesh plate 3-2 are welded between the outer wall of the upper cylinder side of the top cover 2 and the inner wall of the stainless steel shell 4, and the first mesh plate 3-1 is located on the second mesh plate 3- 2; the first net plate 3-1 and the second net plate 3-2 are located below the air guide port of the air duct 1.

[0026] The argon gas enters the auxiliary protective gas cover through the air duct 1, and then is filtered through the first mesh plate 3-1 and the second mesh plate 3-2 to reduce the turbulent flow of the argon gas, and the argon gas forms a stable auxiliary argon gas around the welding torch. The air flow field, so that the area inside the auxiliary gas hood outside the nozzle of the welding torch ...

specific Embodiment approach 3

[0027] Specific embodiment three. This specific embodiment is a further description of the automatic TIG welding machine head auxiliary protective gas cover described in specific embodiment one. In this embodiment, it also includes a high-temperature tape 5, which is wound on a stainless steel The edge of the lower half of the cylinder of the housing 4.

[0028] The main function of the high-temperature tape is to compensate the gap between the welding torch and the workpiece during the welding process, prevent the auxiliary shielding gas cover from rigid friction with the workpiece, and at the same time play the function of gathering argon to prevent titanium alloys and other easily oxidized metals during welding. The workpiece is oxidized, which affects the properties of titanium alloys and other easily oxidized metals.

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Abstract

The invention relates to an auxiliary protection gas hood of an automatic TIC welder head, and belongs to the field of machining. The auxiliary protection gas hood aims to solve the problem that oxidation of metal welding occurs easily near a welding pool in the welding process due to a small protection range of a welding nozzle of a traditional welder. According to the auxiliary protection gas hood, argon enters the auxiliary protection gas hood through a gas-guide tube, the turbulence phenomenon of the argon is reduced through filtering of a first netted plate and a second netted plate, and the argon around a welding gun forms a stable auxiliary argon flow field, so that the area outside of the nozzle of the welding gun and inside of the auxiliary protection gas hood is in the effective protection range of the argon, a good protection effect is achieved at the two sides of the welding pool in the automatic welding process of the easily oxidized metal tungsten electrode argon arc, and oxidation of titanium alloy and other easily oxidized metal is avoided. In the welding process, the auxiliary protection gas hood of the automatic TIC welder head and the welding gun form a whole, and the auxiliary protection gas hood swings along with the welding gun. The auxiliary protection gas hood of the automatic TIC welder head is suitable for the welding of the titanium alloy and other easily oxidized metal.

Description

technical field [0001] The invention belongs to the field of mechanical processing. Background technique [0002] When titanium alloys and other easily oxidized metals are welded by automatic TIG, due to the small torch nozzle of the automatic welding machine itself, the heat radiation area of ​​about 20mm outside the protection range of the torch nozzle cannot be effectively protected during the welding process, resulting in titanium alloys and Other easy-to-oxidize metals absorb hydrogen, oxygen, and nitrogen to oxidize, which causes the performance of titanium alloys and other easy-to-oxidize metals to decline. At present, there are many types of gas hoods for manual argon arc welding of titanium alloys and easily oxidized metals, but the protective effects of auxiliary gas hoods for automatic TIG welding machines are not ideal. Contents of the invention [0003] The invention aims to solve the problem that metal welding in the vicinity of the welding molten pool is pr...

Claims

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Application Information

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IPC IPC(8): B23K9/32
CPCB23K9/167B23K9/325
Inventor 杨飞鹏刘建华陈士龙孙述军赵乾孙柏慧张大旺刘淞高金升朱洪军
Owner HARBIN TURBINE
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