Dear Muhammad,
What is the thickness to be welded?
From: Nazz A <nazzimmm@gmail.com>
To: Materials & Welding <materials-welding@googlegroups.com>
Sent: Friday, 24 July 2015, 9:53
Subject: [MW:23188] We are facing minor pore defects in CuNi 90/10
Sir I am Muhammad.
we are working here in qatar under Qatar Petroleum. We have to complete the fire line systrm through Cu Ni. We are using Tig welding and ising monel 67 CuNi filler wire. With goving back purging as Argon 99.99 % composition.
But still we arr facing the defects as porocity. We already covered the area and clean the parent metals and filler wire. Using all of materials like cutting disk wire brush clits and everything is non ferrous. Our present climate is summer here in Arabian dessert.
But in the Radiography,we cant controle the porocity here. Our all welders are wrll expetienced and well occupied. The poricity is always minor and when we cut out and checking its cant show.
Our acceptable criteria is lower than 0.6 mm.
I hope that you will give the right solution on our problem.
Yours regards...
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