Titanium tube welding can use 427 electrode
Selection of welding equipment Titanium and titanium alloy gold tungsten plate argon arc welding should be used to reduce the external characteristics, high-frequency arc of the DC argon arc welding power supply, and delayed delivery time of not less than 15 seconds, to avoid welding by oxidation, pollution
Gas protection and welding temperature of titanium pipe joints in the welding is to, in order to prevent the welding joints at high temperatures by harmful gases and elements of pollution, must be on the welding area and weld the necessary welding protection and temperature control, the temperature should be below 250 ℃
Titanium tube and titanium wire surface quality on the mechanical properties of welded joints have a great impact and therefore must be strictly cleaned. Iron and titanium wire can be used mechanical cleaning and chemical cleaning two methods
Selection of welding materials argon purity should not be less than 99.99%, dew point below -40 ℃, the total mass of impurities <0.001%
Titanium tube can not be welded with 427 carbon steel electrode, carbon steel electrode welding titanium metal will produce brittle organization, without any strength at all
