Argon arc arc welding, submerged arc welding and vacuum electron beam welding, etc. If the thickness is less than 3 mm, use TIG welding, and if it is more than 3 mm, use MIG welding. The gas purity is not less than 99.99%, and the air and water vapor content in the argon gas is strictly controlled. Surface treatments such as oil stain removal, oxide scale removal, and oxide film removal are required before welding.

1. Porosity problem during welding

2. Crack problem during welding

3. Gas protection during welding

During the titanium welding process, the purity of the gas is very high, so we use high-purity argon. The scope of protection required by argon is the base metal in the molten pool, heat-affected zone and 10 mm area outside the fusion line on both sides. For this purpose, gas protection equipment should be developed, and gas chamber equipment should be used to protect the inside of the pipeline.