Hope that this is not phosphor brone alloy then why u choose ER CuSn1, u should have choosen ERCu. As Bathula said, use Helium, preheat to around 400degree celsius, cover with glass wool area other than jonit to avoid dispation of heat.
On Fri, Nov 29, 2013 at 2:58 PM, Raghuram Bathula <raghurambathula@gmail.com> wrote:
Use Helium as a shielding gas because, risk of oxide entrapment in the weld pool is greatly reducedand provides deeper penetration.Preheating of the base metal is typically required to maintain the base metal at welding temperatureswithout preheating, the high thermal conductivity of copper results in excessive loss of heat away from theweld 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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