What is tungsten carbide punching die

What is tungsten carbide punching die

Tungsten carbide punching die  and core pins are used in the plastic molding and die casting dies. These tools are in fixed position, which are used to create a void providing the desired shape in the molded or cast part. It is often easier to machine a core pin as a separate element and add it to the cavity side or the core side as needed. Steel or tungsten carbide pins / core pins are sometimes used in aluminum molds to create tall, thin cores that might be too fragile if machined out of the bulk aluminum of the mold. The pins are also used for part ejection from a die.