1. Design Stage
With the assistance of CAD/CAM software for three-dimensional modeling, the mold parting surface, pouring system, and cooling system are carefully planned based on the casting shape, size, and production requirements. For example, in the design of an automobile wheel hub mold, a well-optimized pouring system ensures uniform filling of molten metal, effectively preventing defects such as shrinkage and porosity.
2. Processing & Manufacturing
CNC Processing
CNC Milling and CNC Turning are the primary methods used. CNC milling is ideal for machining complex surfaces, while CNC turning is best suited for shaft components. High-precision CNC milling meets the stringent accuracy demands of precision molds.
Special Processing
For mold parts with high hardness or intricate geometries, special processes like EDM (Electrical Discharge Machining) and wire cutting are employed. EDM uses electrical discharge corrosion to machine any conductive material, while wire cutting precisely cuts complex contours—commonly used in manufacturing mold inserts.
Surface Treatment
Various surface treatments enhance mold performance: quenching increases hardness and wear resistance; nitriding improves surface toughness and fatigue strength; and hard chrome plating creates a smooth surface that facilitates casting release and extends mold life.
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