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How to improve the quality of titanium pipe welding?

Due to the strong activity of the titanium tube, so as to implement the welding of the titanium tube, the control of the welding temperature, the protective effect of the protective gas, the welding environment and other aspects of the strict requirements, a little careless, will cause a greater impact on the welding quality, serious will lead to the scrap of the product. Practice has proved that through the analysis of the main factors affecting the welding quality, determining the key welding process, strengthening the control of the environment, personnel, welding parameters and methods in the welding process, the welding quality of titanium pipe materials can be further improved effectively, and prevent the occurrence of welding waste products.

In recent years, a new type of titanium tube has been widely used. Due to its light weight, high strength, corrosion resistance and other properties, titanium alloy is widely used in aerospace, petrochemical and mechanical manufacturing fields, and is also used for the first time in the pipe system construction of surface ships. However, because titanium alloy is a kind of active metal, it has great affinity for oxygen, hydrogen, nitrogen and other gases at high temperature, that is, it has a strong ability to absorb and dissolve gases, especially in the welding process, this ability is accompanied by the increase of welding temperature, and is particularly strong. Practice has proved that if the absorption and dissolution of titanium alloy and oxygen, hydrogen, nitrogen and other gases are not controlled during welding, the product will eventually be scrapped. Therefore, the welding of titanium pipe joint must be effectively prevented and controlled to meet the quality requirements of welding.

Welding requirements for titanium pipe joints
Welding personnel should wear clean work clothes, no oil. Use white gauze gloves for welding. Gloves of cotton thread and other fabrics are strictly prohibited.

The welding platform layout and the silk brush used for cleaning the welding area of the welded joint should be made of stainless steel. Carbon steel and other polluting materials are strictly prohibited.

The welding site should be set in the indoor or special welding workshop as far as possible. Smoking is strictly prohibited in the room. The environment should be kept clean and dry, the room temperature should not be lower than 5℃, and the air convection is strictly controlled.

In order to obtain a better welding quality, the end of the butt pipe was processed into a ⅴ groove as much as possible, and the welding area and the surface of the welding wire were degreased with acetone.
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