Metal shrapnel are used to control the movement of machinery, dampen shocks or vibrations, store energy, and measure force, and are widely used in machines, instruments, and electronic switches.

The stamping materials for metal shrapnel include stainless steel, copper, aluminum foil, carbon steel, and manganese, and they must undergo heat treatment during stamping. But why is heat treatment necessary?

The reasons for the heat treatment of metal shrapnel are: to store and output power that can be used for other movements; to control mechanical actions; to absorb oscillation and shock energy; and to act as a force element.

Heat treatment of metal shrapnel can also improve the hardness, wear resistance, and contact fatigue strength of the stamped parts, enhancing the toughness of the core.