ER Ni Cr Mo-3 WELD OVERLAY
rinshu
we have done CRO on SA516 Gr.70 ,we got ferrite content above 2.5mm
from the weld interface as 0% will it have any negative effect on our
CRO(ER NiCrMo-3-filler,SAW-process)
JASPAL SINGH
Please note that in the Inconel Weldoverlay(ER Ni Cr Mo-3). There is
restriction of Fe not Ferrite.
Most of the time Fe is restricted to maximum 5%.
You are getting Fe 0% is good because most of the time welding
engineer is struggling to maintain Fe below 5%
Best Regards,
JASPAL SINGH CWI-AWS, CSWIP-3.1
ISGEC-PED, Yamunanagar, Haryana (India) PH: +911732307251 ; Mob.
+918930111441(CUG), +919996624244
praveen alavandar
ERNiCrMo-3 weld metal is 100% Austentie, so there is no surprise that you get 0% ferrite.
I dont see any negative side of having no ferrite, you only need to take care having a clean surface free from any contamination, a contaminated surface would introduce P & S in the weld metal and can lead to microfissuring.
Your requirement for ferrite comes only in austenitic stainless steel weld metal which has 4 - 8% ferrite after solidification to swallow all those tramp elements.
Regards,
Praveen
--- On Thu, 12/30/10, rinshu <rinsh...@gmail.com> wrote:
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