Copper plungers are preferred to be used as plunger tip due to their excellent strength, high thermal conductivity. Thermal conductivity is important in terms of cooling the plunger tip. Working temperature is important to prevent plunger tip and shot sleeve deformation occurred by friction. Casting yield, tensile strength, hardness and coefficient of expansion determine the plunger tip lifespan.
Copper plungers are preferred to be used as plunger tips due to their excellent strength and high thermal conductivity. Thermal conductivity is important in terms of cooling the plunger tip. Working temperature is important to prevent deformation of plunger tip and shot sleeve which can occurred by friction. Casting yield; tensile strength; hardness and coefficient of expansion, determine the plunger tip lifespan.
It is used as a plunger tip in aluminum die casting, and plastic injection nozzles and also as a conformal cooling of die casting mold inserts.
CuNi3Si+Cr alloy has been developed as an alternative versatile alloy when CuCoNiBe alloy beryllium is not desired.
The material known as beryllium plunger in aluminum die casting, is used as a plunger tip, mold part, nozzle spray and cooling insert system in plastic injection machines.
CuCoBe is used for brass permanent molds and cooling insert systems for molds.