Use Helium as a shielding gas because, risk of oxide entrapment in the weld pool is greatly reduced
and provides deeper penetration.
Preheating of the base metal is typically required to maintain the base metal at welding temperatures
without preheating, the high thermal conductivity of copper results in excessive loss of heat away from the
weld zone.
On 29 November 2013 14:46, Avis <aviss2000@gmail.com> wrote:
Dear All,Anybody having experience is copper welding. If yes please share your difficultites, and also welder availablity for the welding.The base materials is ASTM B42 UNS C12200 (Cu - 99.9%)P. No. is 31, SFA - A5.7, F. No. 31.
Filler Wire Class - ER Cu Sn 1
With regards,S. Sivasubramanian, Kuwait.
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