Re: [MW:21784] RE: Cracks hair line appearing after welding hard facing electrode

You can also try preheating to lower rate of cooling to lessen cooling cracks as well.

For correct answer, require fuller information on the particular welding process.

S.N.Bagchi

Welding technologist/ metallurgist

On Sunday, August 31, 2014 10:41 PM, pgoswami <pgoswami@quickclic.net> wrote:

Hi ,Suryanarayanan,

 

Some cracks are common with hardfacing alloys, due to their inherently low ductility. This could be minimized by using a Ni-based barrier layer for some type hardfacing alloys (Stellite-6, 12 ).

 

I hope you'll find the information in the attachment as quite useful.

 

What's the type of hardfacing electrode used for weld deposition??

 

Appreciate your response.

 

Thanks

 

 

Pradip Goswami, P.Eng,IWE

Welding & Metallurgical Specialist

Ontario, Canada

pgoswami@quickclic.net

pradip.goswami@gmail.com

http://ca.linkedin.com/pub/pradip-goswami/5/985/299

 

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From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of george.dilintas@gr.bureauveritas.com
Sent: Saturday, August 30, 2014 9:14 AM
To: materials-welding
Subject: Re: [MW:21764] RE: Cracks hair line apprearing after welding hard facing electrode

You mean residual stresses cracks
Best regards
Dr Georgios Dilintas
Authorized Nuclear Inspector
Authorized Inspector Supervisor
HBS Regional Technical Manager

---

  From: Kannayeram Gnanapandithan [kgpandithan@gmail.com]
  Sent: 08/30/2014 10:19 AM ZE5B
  To: materials-welding@googlegroups.com
  Subject: Re: [MW:21758] RE: Cracks hair line apprearing after welding hard facing electrode

it is stress relief cracks

THANKS & BEST REGARDS

KG.PANDITHAN, AWS-CWI, CSWIP 3.1

CONSULTANT-WELDING & QUALITY

On Sat, Aug 30, 2014 at 10:02 AM, jsn <jsn@cal2.vsnl.net.in> wrote:

Dear ,

 

Can please explain why hair line cracks are appearing after welding with ahand facing electrode

 

I have used a build up electrode  layer - 2

and 1 or two layers with hard facing electrode  a hair line crack at varius intervals.

 

I am informed that since it is hardfacing electrode hair line cracks will appear

 

= s p raman=
J.Suryanarayanan

 

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