Re: [MW:13300] Back purge for CuproNickel welding

Yes it is required back purging,you can use Nitrogen for purging.

On Sat, Dec 24, 2011 at 9:09 PM, prem nautiyal <prem_nautiyal26@yahoo.com> wrote:

Hi friends   I am establishing a welding procedure for welding of 90-10 Cu-Ni 6mm thick tubes, UNS C70600 as per ASME SecIX. All joints are single sided joints and i will be welding them with TIG: ER CuNi filler wire.   My only query was that do i need to back purge the weld joints ?   Regards   Prem S Nautiyal

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