Re: [MW:12206] WB36 PTC intermediate SR.........

Dear Kalyan:

I assume you are in BHEL, I have visited BHEL before and I love what they do there, good company.

Anyway, this alloy has to be treated with care because almost half  of copper amount is still dissolved in the matrix.

Since in these applications we always deal with high thicknesses, during welding this copper will precipitate and cause increase in hardness and decrease in toughness.

Your spec asks for that because they know that whole welding will take time and during this time cracks may appear or so...

So it is always better to not leave the weldments wait...!!!
Carry out ISR at your own engineering judgement or acc to your specification whichever seems to be more effective.

You may have to plan so that no weldment remains un-heat treated..

Regards

Ramin  Kondori

   QC/Welding Engineer 

         IWE AT 0070

   

On Fri, Aug 12, 2011 at 10:30 AM, kalyan vvv <vvvkalli@gmail.com> wrote:

Dear experts,

                   i had a doubt, please explain.

                   for WB 36 material, we are doing SR after shell rolling and after total completion of weding before Hydraulic test.

                  

                    but as per the QAP, PTC should fit up after intermediate SR before L-seam welding.

                    Could u pls expalin, what will happen if we send PTC for SR along with the shell after rolling & after Cmpletion of welidng ? Is it effects to mechanical properties in testing & why? 
--

THANKS & REGARDS

 

KALYAN VVV

WELDING ENGINEER

HYDERABAD

--
To post to this group, send email to materials-welding@googlegroups.com
To unsubscribe from this group, send email to materials-welding+unsubscribe@googlegroups.com
For more options, visit this group's bolg at http://materials-welding.blogspot.com/
The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.

--
To post to this group, send email to materials-welding@googlegroups.com
To unsubscribe from this group, send email to materials-welding+unsubscribe@googlegroups.com
For more options, visit this group's bolg at http://materials-welding.blogspot.com/
The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.