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[MW:2381] Re: WELD OVERLAY

By Materials & Welding
Normally to get SS347 chemistry E309LNb or E309Cb is welded as a barrier layer as it is rich in chemistry(22-25Cr,12-15Ni,.7-1.0Nb/Cb) then E347)18-21Cr,9-11Ni,1.0Nb/Cb) electrode & thus by dilution gives the Cr,Ni,Cb requirement of SS347 & then u can weld E347 as next layer.

On 6/9/09, MAHANTESH LONI <mahantloni@gmail.com> wrote:
Dear Friends
 
Pl send me article on weld overlay.
 
What is weld overlay
Why barrier layer requires ER309LMo & subsiquent layer requires ER347
When overlaying with Inconel alloys we dont use barrier layer ER309L why.
 
Regards
Mahantesh
 
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