Re: [MW:7517] Regarding Inconel Welding

To avoid PWHT after repair we require to know following
I) What is the depth of corroded area. And it should not. Be in the base metal this can be detected by applying copper sulphate sol.
Ii) If the depth is with in SS material No need of using inconel and you can use the equivalent SS weld metal and also no need of PWHT
Iii_ -f it is very deep and penetratoing in base metal ': in such case you need to reapir base metal to attain the reqd base metal thickness and later carry out the restoration of welded clad If the base metal near repair is less than 38 mm you can skip PWHT however you need to have PQR of overlay with out PWHT
Regards
Hegde
Ii) I

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From: "cyril andrews" <jcyrilandrew@gmail.com>

Sender: materials-welding@googlegroups.com

Date: Tue, 12 Oct 2010 19:13:03 +0300

To: <materials-welding@googlegroups.com>

ReplyTo: materials-welding@googlegroups.com

Subject: [MW:7514] Regarding Inconel Welding

Dear all,

      Here by i am araising one question which i am in need of some clarification.

 

I am having a vessel to be repaired and that vessel is a carbon steel and inside with stainless steel material. That vessel is a PWHT vessel. Now we are going to repair that vessel, due to corrosion. But after welding we cannot do PWHT on that job. So i want a good suggestion to avoid the PWHT. What abt inconel welding? How it satisfies the PWHT requirement. If any one knows... please share with me. I hope i will get a good solutions.

 

Regards,

J.C.Andrews,

QA/QC Engineer,

Doha-Qatar.