[MW:1808] Re: Pre heat requirement for split welding procedures from combined PQR.

Dear Ibrahim,

 

You should specify the thickness of the Original PQR and the current thickness of the job, which you intended to utilize FCAW. Based on which only, the experts can respond!

 

regards,

 

On 3/26/09, Muhammed Ibrahim <ibratech@gmail.com> wrote:

Hi friends,

 

I would like to clarify one important thing about preheat. My PQR is qualified with SMAW+FCAW. When I start the welding I preheated to 24 degree C. After root and hot pass compleated with SMAW before starting FCAW the plate temperature is 87 degreeC. If I split this PQR to make a WPS only for FCAW, Is it required to preheat the plate to 87 degree C or can I give 24 degree celcius as preheated in the starting of PQR test coupon?. Your response will be highly appreciated.

 

The AI insisting to put preheat of 87 degree shall be considered when we split the PQR for FCAW because when FCAW process starts the temperature of the plate to be considered as the preheat temperature (87 degreeC).

Thanks & Regards
Muhammed Ibrahim PK
 

--~--~---------~--~----~------------~-------~--~----~
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.
-~----------~----~----~----~------~----~------~--~---