We have a project for a customer which requires welding clevis's to a shaft. The clevis's are 656 Gr80 material .500" thick. The shaft is 1045 and 1.375" thick. The entire weldment is approx 25" long and has 4 of these clevis's welded to it. The clevis's slip over the shaft and will be welded " all around". 6mm fillets.
( These will be welded robotically)
I plan to weld these with ER80S-D2 filler and 95/5 Ar/Co2 shield. For manufacturing reasons, I would like to do this avoiding a pre-heat situation if possible.
I will be doing some samples, macro-etching them. I also plan to send these samples to my Met Lab
for analysis, of course looking for cracking.
What is everyone's opinion on validating this process without the aid of the preheat ??
Thanks everyone !