Blog

Welding requirements and precautions for titanium alloy conduit

(1) As far as possible to set up a special welding workshop, indoor smoking is strictly prohibited, the environment to keep clean and dry, strict control of air convection.

(2) Welders wear clean work clothes and degreasing gloves when welding. It is strictly prohibited to touch parts with bare hands.

(3) The welding area and the surface of the welding wire should be degreased with acetone.

(4) Adopt high purity protection argon, purity is not less than 99.99%. During welding, the gas supply flow should be protected on the front and back of the welding passage according to the value specified in the process regulations.

(5) During the welding process, the flow of argon gas in the tube and the nozzle of the welding tool should be kept constant to prevent convex and concave phenomenon in the forming of the weld pool in the tube.

(6) Short arc welding should be adopted as far as possible during welding, and small welding line energy should be adopted.

(7) When spot welding the nozzle, the gap is less than 30% of the wall thickness. Every weld should be welded as once as possible.

(8) Welding, welding tools should not swing from side to side, welding wire melting end shall not move out of the gas protection zone. The arc should be pumped 10-15s in advance, and the welding torch cannot be lifted immediately when arc breathing. The air supply should be delayed 15-30s until the temperature drops below 250℃.

Tags: