Gents, need a little advice here. We need to make a weldment out of A514 of the following thicknesses. 3/4, 2-1/2 and 2-3/4. After cutting these on a burning table, do I need/should machine away the HAZ before I weld?? And if so, how deep??
Grind to bright metal. The weld HAZ is going to be wider than the torch cut HAZ and will refine it. The torch cut recast surface and HAZ is typically less than 1/32 inch.
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