Just forget it. You can’t deposit Carbon Steel on the top of 625 weld deposit. Welds will simply crack. Stay with 625 deposit all the way. That’ one of the problem on single sided welding of 625 clad pipes. What’s the thickness of the pipes involved and the design specification???
Thanks.
Pradip Goswami, P.Eng,IWE
Independent Welding & Metallurgical Engineering Specialist & Consultant.
Ontario,Canada.
ca.linkedin.com/pub/pradip-goswami/5/985/299
From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Himan Nikdin
Sent: Friday, May 27, 2016 11:42 AM
To: materials-welding@googlegroups.com
Subject: RE: [MW:24896] RE: 24837] welding of cladded (alloy 625) pipes with single side access
Dear Pardip
Thanks for your help and sending that practical guide my proposal is;
Buttering of the edge of joint up to 1/3 of pipe thickness by INCONEL 625 filer (ENiCrMo-3 /ERNiCrMo-3), then continue welding of root pass by INCONEL 625, after completion of root pass fill and cap the joint by carbon steel electrode/filer.
what do you think about it?
Regards,
Himan Nikdin
From: pgoswami@quickclic.net
To: materials-welding@googlegroups.com
CC: himan.nikdin@outlook.com
Subject: [MW:24860] RE: 24837] welding of cladded (alloy 625) pipes with single side access
Date: Wed, 25 May 2016 00:13:24 -0400
Hi Himan,
Please see the practical guideline for your reference. The highlighted texts would be helpful. Feel free to ask if have any clarifications. For single sided FP welds, ER-NiCrMo-3(625 type) consumables are the only options.
Thanks.
Pradip Goswami, P.Eng,IWE
Independent Welding & Metallurgical Engineering Specialist & Consultant.
Ontario,Canada.
ca.linkedin.com/pub/pradip-goswami/5/985/299
From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Himan Nikdin
Sent: Tuesday, May 24, 2016 4:10 AM
To: materials-welding@googlegroups.com
Subject: [MW:24837] welding of cladded (alloy 625) pipes with single side access
Dear Experts
I need a practical guide or sample WPS for welding of cladded (alloy 625) carbon steel pipes with one side access. the size of pipes are minimum 4".
Regards,
H.Nikdin
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