Metal Forming Industries

Impact Extrusion

What is impact extrusion?

Impact extrusion is a type of specialty cold forming used for larger parts with hollow cores and thin wall thicknesses. The impact extrusion process begins with a tightly controlled, by weight, metal blank that is placed in a die that is located on a vertical, mechanical or hydraulic press. A punch being driven into a die by the force of the press causes the metal blank to flow (extrude) in a forward (into the die) or backward (around the punch) manner. The process of impact extrusion means to impact a metal blank at such force that it transforms the metal into a plastic state that allows the metal to actually flow into the die shape and around the punch.