RE: [MW:20958] PWHT for stainless steel weld joint

I was told there is equipment which can be used for stress relief, particularly helpful when coming to SS welding when PWHT is not a good option. This must be done during the welding process, not post welding like PWHT.

 

For welding being carried out with CS & LA materials, it can achieve approx. 90% of what a PWHT can do if it be being used correctly. For welding being carried out with SS materials, it should able to achieve the same level of stress relief like CS/LA materials.

 

Let me know if anyone have any interest as demonstration can be arranged.

 

 

Thanks,

KL Chung

KTM Taiwan.

 

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Arunachalam A
Sent: Wednesday, 28 May, 2014 11:22 PM
To: materials-welding@googlegroups.com
Subject: Re: [MW:20924] PWHT for stainless steel weld joint

 

If you carry out the PWHT, then MDMT for the vessel is reduced to Minus 29 Deg C.

 

Regards,

 

 

On 27 May 2014 06:45, Ghafor Mohamad <ghaformohamad@gmail.com> wrote:

Control the interpass and heat input

Thanks
Ghafor Mohamad
SQE Alstom

On May 27, 2014 10:42 AM, "Raneesh.PK" <pkraneesh@gmail.com> wrote:

Dear all

 

As we know very well pwht is restricted for stainless steel   weld joint due to formation of chromium carbide(Senzitaion)

 

My question is how to reduce the weld stress of  stainless steel weld joint.

 

 Regards,

 

RANEESH.PK               

 

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Arunachalam.A,

Abu Dhabi

00-971-50-5257122

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