Re: [MW:12720] CLAD MATERIALS -WELDING

Hi,

Try GMAW welding completely with ERNi CrMo-3, will also improve production, please find below few things to consider:-

* Min. of 2 layers

* Production weld overlay shall have chemical composition checked using PMI (X-ray fluorescence) method or by physical sample.

*Dilution of welded surfaces shall not exceed 10% of base metal

*Hardness testing after final machining shall be lesser than 248HV10.

*Side bend acc. to ASME sec ix

*Micrographic examination (*400)  

*100% PT testing

Regards

Manpreet Singh 

From: Raghuram Bathula <raghurambathula@gmail.com>
Sent: Tue, 18 Oct 2011 15:14:10
To: materials-welding@googlegroups.com
Subject: Re: [MW:12696] CLAD MATERIALS -WELDING
you can weld with E7018 on backing material and clad restoration only when you have access from inside, otherwise you need to weld with Ni based filler completely.

On Sun, Oct 16, 2011 at 10:05 PM, sevak hiren <hirensevak80@gmail.com> wrote:

I think the welding to be done in foll.manner.ࠠ first of all grind/flush the clad material up to the surface of the 5L grade pipe...prepare the ends of the 5L pipes to be welded together,root,fill by suitable electrode up to the basepipe thickness....flush the uper surface of the welding.....then prepare the ends of the clad material and then overlay welding by suitable electrode.........࠼/p>

On Oct 16, 2011 3:50 PM, "Sundaram Elumalai" <Elumalai.Sundaram@starfab.com.sa> wrote:

Hi experts,

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We have the following Clad Pipe and we are preparing WPS /PQR to weld this SPOOL. As I know we need to use ERNiCrMo3 / E NiCrMo 3 ( if GTAW+SMAW) to Complete weld. But if any one is having experience with this, please advice whether we will go with

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GTAW -ࠅR NiCrMo3 ਠFirst four Passes- R/H/F1/F2)

SMAW E7018-1 ਠBalance Filling /Capping).

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We have Pitting corrosion test as per ASTM G48 at 50 degree.

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Pipe	NPS:10-Thk:45mm-PIPE-API 5L GR.X65 PSL2 - SMLS -GA-E-61036	BW	3mm Inconel Cladded
Pipe	NPS:12-Thk:15.88mm-PIPE-API 5L GR.X65 PSL2 - SMLS -GA-E-61036	BW	3mm Inconel Cladded
Pipe	NPS:12-Thk:45.5mm-PIPE-API 5L GR.X65 PSL2 - SMLS -GA-E-61036	BW	3mm Inconel Cladded
Pipe	NPS:12-Thk:53.5mm-PIPE-API 5L GR.X65 PSL2 - SMLS -GA-E-61036	BW	3mm Inconel Cladded

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With Kind Regards,

༯span>

S.Elumalai.

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