about P91 welding with GMAW

Date 10-28-2004 03:52

It's hard enough to weld it with GTAW and SMAW. Why subject yourself to the additional headaches of incomplete fusion typically associated with GMAW?

By snakejhj (*)

Date 10-28-2004 08:07

We had weld with GTAW root,and GMAW fill cap.and test with RT is OK.now we will do the machinel performance .

By Bonniweldor (**)

Date 11-02-2004 00:40

Certainly you realize, and consistent with Mr.Sims indication, RT is not sensitive for lack of fusion type defects. Welding of P91 materials should not have "productivity" as a high priority. These materials are normally only used in critical applications, so any magin for error in their integrity is proportionately reduced.

By markgolding Date 11-02-2004 15:51

Just to put the records straight you can use high productivity welding processes to weld P91 very successfully. If you are looking for defect free GMAW then I would suggests using FCAW as this eliminates the possibility of lack of fusion defects.

Go to www.metrode.com and us P91 as a search term and you will find all you need to know about the welding of this type of material

By H. Chang (*)

Date 11-15-2004 08:32

Hi
You may visit "Sperko Engineering Service, Inc. and look for the title of " Welding grade 91 alloy steel"
Kind regards
H.Chang