What must be guaranteed when welding titanium tubes?

Titanium tube welding is a TiG welding process that uses inert gas to effectively protect the welding area. Due to the special physical and chemical properties of titanium, its welding process is quite different from other metals. Titanium tubes have high strength, good plastic toughness, and corrosion resistance, and are more and more widely used in aerospace, shipbuilding, and chemical industries. In order to make better use of titanium tubes, it is necessary to master their weldability.

When welding Grade 9 Ti3Al2.5V Titanium Tube, it must be ensured that:

1. The metal in the welding zone will not be polluted by active gas N, 0, H and harmful impurity elements C, Fe, Mn, etc. above 250 °C.

2. Coarse-grained structure cannot be formed.

3. Can not produce large welding residual stress and residual deformation. Therefore, the welding process must follow the predetermined construction sequence, strictly follow the process quality management standards, and implement quality control of the whole process. Make the factors of man, machine, material, and method in a well-controlled state, so as to ensure the welding quality of titanium tubes within a reasonable construction period.