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
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