Re: [MW:21770] RE: Cracks hair line apprearing after welding hard facing electrode

Usually hard facing  followed with hair cracks after cooling but you can repair with some high tensile electrodes depending on the hardness 

check also for Preheating and PWHT is carried out properly Is recommended with high hardness and tough metals

Regards,

H.A

On Sunday, August 31, 2014 7:57 AM, Mahantesh Loni <mahantloni@gmail.com> wrote:

This is quite normal in hard facing welding

On 30-Aug-2014 10:07 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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