How to accurately determine the design of die casting parts?

Update:05 Nov 2020

1. The design of die casting involves four aspects:

A, that is, the requirements of pressure casting on the shape and structure of parts;

B. Process performance of die castings;

C, dimensional accuracy and surface requirements of die castings;

D. Determination of the parting surface of die castings;


The part design of die casting is an important part of die casting production technology. The following issues must be considered when designing: selection of mold parting surface, opening of gate, selection of ejector position, shrinkage of casting, guarantee of dimensional accuracy of casting, casting Prevention of internal defects, relevant requirements for casting holes, relevant requirements for shrinkage and deformation, and the size of machining allowances;

2. The design principles of die castings are:

A、Choose the material of die casting correctly,

B. Reasonably determine the dimensional accuracy of die castings;

C, try to make the wall thickness evenly distributed;

D. Add craft corners at each corner to avoid sharp corners.

3. Classification of die castings:

According to the requirements of use, it can be divided into two categories. One type of parts bearing larger load or parts with higher relative movement speed. The items to be inspected include size, surface quality, chemical composition, and mechanical properties (tensile strength, elongation) ,hardness);

The other category is other parts. The items to be inspected are size, surface quality and chemical composition. When designing die-casting parts, it should also be noted that the parts should meet the process requirements of die-casting.

The processability of die casting is considered from the position of the parting surface, the position of the top push rod, the relevant requirements of the casting hole, the relevant requirements of shrinkage and deformation, and the size of the machining allowance. Reasonably determining the parting surface of the die casting surface can not only simplify the structure of the die casting mold, but also ensure the quality of the casting. Requirements for the design of die casting parts.More about:custom precision die casting parts