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A highly efficient active agent for a-tig welding of titanium alloys

A technology of titanium alloy and active agent, applied in welding equipment, welding medium, welding equipment, etc., can solve the problems of large proportion of fluoride components and insufficient penetration depth, etc., and achieve the effect of low price and fine grain size

Active Publication Date: 2022-02-22
INNER MONGOLIA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the problems of large proportion of fluoride components and insufficient penetration depth in existing titanium alloy activators, and propose a new type of titanium alloy A-TIG activator formula that is highly efficient and based on the combination of activator action mechanisms

Method used

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  • A highly efficient active agent for a-tig welding of titanium alloys
  • A highly efficient active agent for a-tig welding of titanium alloys
  • A highly efficient active agent for a-tig welding of titanium alloys

Examples

Experimental program
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Effect test

Embodiment 1

[0025] single component MgF 2 , La 2 o 3 The active agent is used for A-TIG welding of 6mm thick TC4 titanium alloy plate. When in use, add acetone to make it into a paste, and then use a flat brush to evenly coat the paste active agent on the surface of the titanium alloy test plate. The metallographic diagram of the cross-section of the weld after welding is as follows figure 1 with figure 2 shown.

Embodiment 2

[0027] Two-component MgF 2 +La 2 o 3 The active agent is used for A-TIG welding of 6mm thick TC4 titanium alloy plate. When in use, add acetone to make it into a paste, and then use a flat brush to evenly coat the paste active agent on the surface of the titanium alloy test plate. The metallographic diagram of the cross-section of the weld after welding is as follows image 3 shown.

Embodiment 3

[0029] Three-component MgF 2 +La 2 o 3 +AlCl 3 The active agent is used for A-TIG welding of 6mm thick TC4 titanium alloy plate. When in use, add acetone to make it into a paste, and then use a flat brush to evenly coat the paste active agent on the surface of the titanium alloy test plate. The metallographic diagram of the cross-section of the weld after welding is as follows Figure 4 shown.

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Abstract

The invention discloses an efficient active agent for titanium alloy A-TIG welding, which belongs to the technical field of active agent welding. The grade of titanium alloy is TC4, and the active agent formula is MgF 2 , La 2 o 3 , BaCl 2 and AlCl 3 Composition, its mass content is MgF 2 : 20%~30%; La 2 o 3 : 20% ~ 30%; BaCl 2 : 20% ~ 25%; AlCl 3 margin. After mixing the above ingredients according to the ratio, evenly apply it on the surface of the titanium alloy test plate, dry it and wait for welding. The proportion of toxic fluoride in the active agent is small. Using this invention to carry out A-TIG welding, compared with the traditional TIG welding with the same parameters, can make 6mm thick TC4 titanium alloy without opening the groove for one-time penetration, and obtain a weld with a weld shape coefficient of less than 1.30 (depth-width ratio greater than 0.77) At the same time, the grain size of the weld zone can be refined. Suitable for efficient welding of titanium alloys.

Description

technical field [0001] The invention relates to a high-efficiency active agent for A-TIG welding of titanium alloy, which belongs to the technical field of active welding. Background technique [0002] With the continuous advancement of domestic aerospace, offshore platforms, large ships, nuclear power and other major engineering projects, the welding of components requires greater weld penetration and smaller welding deformation. Traditional TIG welding of titanium alloys has disadvantages such as shallow weld penetration and small aspect ratio. In order to achieve single-sided welding and double-sided forming, a larger welding heat input parameter has to be selected to ensure penetration. When titanium alloys are welded under high heat input conditions, the weld grains tend to grow significantly, which will cause the mechanical properties of the joints to decrease. [0003] Active TIG welding is referred to as A-TIG welding. The addition of active agents can affect the w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/362B23K9/167
Inventor 董俊慧高晓刚侯继军
Owner INNER MONGOLIA UNIV OF TECH
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