Fineblanking is a method of punching parts without die break. It is a method of controlling metal flow in the shearing area through the use of an impingement ring, which is pressed into the metal outside the cutting line with great force to restrain the metal. Fineblanking technology is suited for easily cold-formed materials such as carbon steel, aluminum, copper alloys, stainless steel and other alloyed steels. Any metal with Rockwell B or less is ideal.

Industries served by fineblanking and conventional stamping are automotive, general machine and equipment, communications, appliances, camera and video, instruments, ordnance and cutting tools. KEYWORDS for this process: trepanning, coining