There are mechanical and practical reasons, as well as cosmetic ones, for subjecting cast parts to high-velocity surface treatment.
Some industry sources estimate that more 80% of all castings produced in the U.S. are shot blasted once they exit the mold. It’s not the first step in casting production, nor the last step, and it’s not the one very many people identify when discussing metalcasting operations. But it’s essential.
Shot blasting - meaning, the mechanical process of propelling abrasive media at high velocity against a part’s metal surface - is a cleaning process, but it’s more than that. Take this quiz to show how much you know about shot blasting, or to learn more.