Wednesday, March 9, 2011

Re: [MW:10230] Looking for WPS for A182 F22 to HP Nb Mod ( 35% Ni , 25%Cr Material)

i dont have experience of such a dissimilar joint .


Is it a service exposed tubes,??

Which portion u are having this sort of joint in the furnace ,normally
oulets are HP40 Nb modified tubes.??

this is dissimilar metal welding case,between fully austenitic to
ferritic base metal.

what i presume ,
pre-heating to 300degC,and welding with inconel filler should meet the
requirement as PWHT may result in PWHT cracking so it should be
followed as per ASME Section VIII, part UNF - 56.

regards

yogeshK

On 3/8/11, ak1965 <akashverma1965@gmail.com> wrote:
> We need to butt weld many joints in the outlet of ethylene furnace
> with following material specs:-
>
>
> Base Metals :- HP Nb Mod. (35% Ni & 25% Cr) & A 335 F22 ( 2.25% Cr &
> 1 Mo)
>
> Pipe Thicknesees : 11 mm ( both pipes)
>
> Service Temperature : 900 Deg C
>
>
> Please help to prepare WPS for this typical joint and also what NDT is
> required to esptablish the integrity.
>
>
> Regards
>
> --
> 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.

No comments:

[MW:34820] RE: 34813] Clarification in Rate of heating and cooling.

Hello,   Please see the response below.   Regards.   P. Goswami, P. Eng, IWE.   From: materials-welding@googlegroups.com <materials-weld...