medical titanium bar Titanium tube welded using inert gas welding area

Titanium tube welders law process characteristics
Titanium tube welded using inert gas welding area for the effective protection of TiG welding process. Since titanium has special physical and chemical properties , and thus there is a big titanium alloy wire  difference in the welding process and other metals.
Titanium pipe welding must ensure :
Pollution ( a ) weld metal zone is not more than 250 ℃ reactive gas N, 0, H and harmful impurity elements C, Fe, Mn and the like.
( 2 ) can not form a coarse grain structure .
( 3 ) does not produce a large welding residual stress and deformation. Therefore, the welding process is required to reserve the construction sequence , in strict accordance with process quality management standards , the implementation of quality control of the whole process. People , machine , material, method factors are controlled in a good state to work in a reasonable period, to ensure the quality of welding titanium tube.
Titanium pipe welding using materials, equipment and tools
4.1 titanium pipes and fittings : shall have the manufacturer's factory certification and quality certificates . After retesting its size, chemical composition , mechanical properties and availability status should comply with DIN17850 standards.
Titanium pipe welding material
Wire ; wire grades ERTi-2, titanium welding wire select the wire should meet the following requirements:
(L) the chemical composition and mechanical properties of the wire should be fairly and base metal ;
( 2 ) If the welded parts require high plasticity , should adopt a purity higher than the base metal wire.
Wire retest before using the material , the factory inspection certificate and certificate of quality to be ; wire surface should be clean and free of oxidation color , no cracks , peeling, spot scars and defects such as slag . The chemical composition of the wire should comply with the relevant provisions of AWSA5.16-70 's .
4.2.2 Argon : Industrial a pure argon , purity not less than 99.98% , moisture content of less than 50Mg/m3.
Argon using the factory to check the bottle on the certificate to verify the purity argon indicators , titanium spring wire and then check for leaks or malfunctioning cylinder valve first elephant.