Mr. Vijay,
Welding P91 to P1 requires careful consideration. due to differences in their thermal
and mechanical properties. However you can try with:
a proper edge preparation and alignment (to avoid cracks during welding),
using E 9018-B9 /ER90S-B9 filler metals (GTAW is preferred) which are compatible,
preheat to 150-200deg. C throughout to reduce the risk of cracking during welding,
maintain an interpass temp. below 250 deg. C to minimise thermal stresses and
avoid embrittlement of weld area.
maintain Argon purging throughout, use nominal current to avoid distortion &
cracking in P91 material
PWHT at 730-800 deg C with proper holding and to relieve stresses,
allow controlled cooling to avoid embrittlement,
monitor for Carbon migration from P1 to P91 which will affect mechanical properties.
In a nutshell, careful adjustments in heat input, preheating & interpass temp. control, and
PWHT are necessary to ensure a successful welding and maintaining structural integrity.
rgds,
Sridhar.
On Mon, 16 Sept 2024 at 13:07, Vijay Kumar <vijaytuty@gmail.com> wrote:
Dear Experts,I need SA335 P91 to SA106Gr.B Dissimilar Material Welding Procedure with some reference codes.Please shareThanksVijayakumar+91 8238450968--
https://materials-welding.blogspot.com/
https://www.linkedin.com/groups/122787
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/be7e26e6-2446-4b69-8ed4-d10c5a074dcfn%40googlegroups.com.
https://materials-welding.blogspot.com/
https://www.linkedin.com/groups/122787
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/CAHo%3DYiiLsz5%3Dqi-qf6-Z4j889xVeLXR_f%2BDGnN2SbGrs2rXtFA%40mail.gmail.com.
Comments