Wear ring for die-cast piston, die-cast piston incorporating wear ring, and method of forming wear ring

摘要

A wear ring for a die casting machine piston comprises an annular body having a gap extending therethrough. The gap is configured to define a pair of circumferentially spaced opposing surfaces that are offset in at least two circumferential directions. The opposing surfaces of each pair are inclined and are configured to contact each other in a flush manner when the wear ring is compressed in the circumferential direction.