Problem Welding Metal Plate

by Danial R.

My technical staff here in my company recent worked on a 2-inch thick metal plate. While doing heavy welding on it the plate bended from both corners resulting in a potbelly shape from the middle. I was told that that happened because too much welding was done on it at once without letting it cool off...is that correct? Is there anyway I can prevent that from happening? Your help would be greatly appreciated.