Need welding procedure on how to weld Tantalum (GTAW)
Need welding procedure on how to weld Tantalum (GTAW)
(OP)
Need a welding procedure To see what I am doing wrong ,never welded with Tantalum before. I need help! If anyone can help please do.





RE: Need welding procedure on how to weld Tantalum (GTAW)
Take care and hope this helps.
RE: Need welding procedure on how to weld Tantalum (GTAW)
RE: Need welding procedure on how to weld Tantalum (GTAW)
Commercially pure tantalum is soft and ductile and does not seem to have a ductile-brittle transition. There are several alloys of tantalum commercially available. Even though the material is easier to weld, it should be well cleaned and for best results should be welded in the inert gas chamber. The gas tungsten arc welding process is recommended. Some tantalum products are produced by powder metallurgy technology and this may result in porosity in the weld. The arc cast product does not have porosity. Filler wire is normally not used when welding tantalum and for best results direct current electrode negative is used. High frequency should be used for initiating the arc. Helium is recommended for welding tantalum to provide for maximum penetration since joints are designed to avoid using filler metal.
This should give you a general idea of what is required in case you want to do some experimenting but you need to heed the advice of HightyHo and MikeMet if you intend to actually use the weldment especially if you are welding it for someone else.
RE: Need welding procedure on how to weld Tantalum (GTAW)
Suggest contacting Cabot at www.cabot-corp.com