Welding on the titanium exhaust??
Melting Slicks
Joined: Aug 2000
Posts: 2,112
Likes: 2
From: Sindelfingen Germany
Re: Welding on the titanium exhaust?? (KBlanke)
Best welding is TIG, using a Titanium rod. Small parts like turbine shovels are welded under a thing that looks like a cheese dome. For an exhaust this is not necessary. The root of the weld can be flooded with argon.
Frederik
Frederik
Racer
Joined: May 2002
Posts: 275
Likes: 0
From: Houston TX
Re: Welding on the titanium exhaust?? (C5 Frederik)
Yup, Frederik has it right. It doesn't have to be in a vacuum but has to be done with an inert gas which creates a shielded environment and wire or rod similar to the base metal.
Drifting
Joined: May 2002
Posts: 1,607
Likes: 1
From: San Francisco CA
Re: Welding on the titanium exhaust?? (KBlanke)
To avoid weld defects, the weld area should be freed of all surface contaminants. As even hand sweat can lead to hardening, the weld area should be cleaned again directly prior to welding using a solvent that leaves behind no residue.
Welding is carried out with a direct current power supply and a negatively poled electrode. The weld puddle, the heated adjacent zones and the root side must be protected with argon. Good results are achieved with argon flow rates around 6 to 8 l/min. Higher rates do not improve the protection and often cause turbulence.
If everything is done right, the finished weld has a bright silvery appearance. Yellowish to bluish colors indicate slight hardening of the weld, which is acceptable. Dark blue colors or a gray oxide layer point to inadequate protection of the weld and brittleness through oxygen and/or nitrogen pickup.
Welding is carried out with a direct current power supply and a negatively poled electrode. The weld puddle, the heated adjacent zones and the root side must be protected with argon. Good results are achieved with argon flow rates around 6 to 8 l/min. Higher rates do not improve the protection and often cause turbulence.
If everything is done right, the finished weld has a bright silvery appearance. Yellowish to bluish colors indicate slight hardening of the weld, which is acceptable. Dark blue colors or a gray oxide layer point to inadequate protection of the weld and brittleness through oxygen and/or nitrogen pickup.
