Hi,
Since copper is having high thermal conductivity so to weld copper,
one should focus on preheating appox 300 to 400 degree C.
Also try to use optimum electrode/filler diameter to have more arc heat.
In copper premature cooling is always a problem.
Regards,
Zakir Ali.
From: Ganesh Mahankal <mahankalga@gmail.com>
Sent: Wed, 22 Jan 2014 18:24:43
To: materials-welding@googlegroups.com
Subject: [MW:19905] Copper Welding
Dear Sir ,
Preheating is very very important for copper welding.
also use dia 1.6 mm filler wire only for thickness less than 3 mm.
Best Regards,
Ganesh Mahankal
Alfa Laval India Ltd
+91 9970357971
On Friday, November 29, 2013 2:46:36 PM UTC+5:30, Avis 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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