By Superflux
Date 10-09-2009 16:30
Edited 10-09-2009 17:12
zambrota,
If you are using Dry Mag powder, then maintain preheat during gouging, clean-up and inspection. This should help retard new cracks forming.
Another alternative would be to perform a full Post Weld Heat Treatment Before MT whether it be wet or dry mag.
We have no idea what abuse this item has been subjected to prior to your involvement.