Injection mold in the use process, because of the cavity surface wear serious and can not continue to use the phenomenon called surface wear failure. The form of the cavity surface roughness increases, the size because of the cavity wear quantity is too large and ultra poor.
The cavity in the work process of surface wear is an inevitable phenomenon, especially in forming with the fiber glass and other hard packing plastic and forming volatile corrosive gas, plastic, packing and corrosive gases will aggravate the die wear. Therefore, the cavity surface wear failure is a normal form of failure, the key is how to restrain premature or excessive wear. Therefore, need to choose good wear resistance of die material forming parts, or surface treatment of cavity. Surface treatment method is commonly used chrome plating, chrome plating layer can be 0.10 to 0.15mm.