Die casting wall thickness (often referred to as wall thickness) is a special significance in die casting technology factors, the wall thickness has close relationship with the whole process specification, such as filling time of calculation, the choice of gate velocity, coagulation time of calculation, the analysis of the mold temperature gradient, the action of pressure (final pressure), the duration of stay mould, casting temperature of pack out and operation efficiency;A, part wall thickness partial thickness can make the mechanical properties of die castings decreased obviously, thin wall casting density is good, relatively increased the strength of the castings and pressure resistance;B, casting wall thickness too thin, too thin will cause bad aluminum liquid filling, forming difficulties, made of aluminium alloy welding is bad, the casting surface are prone to defects such as cold shut, and bring difficulties to the die casting technology;Die casting with the increase of wall thickness, the internal defects such as porosity, shrinkage, in guarantee under the premise of castings have enough strength and stiffness, should try to reduce the casting wall thickness and keep the section thickness uniform, in order to avoid defects such as shrinkage, the thick wall of the casting should be cut thick (minus), increase muscle;For large areas of flat type of thick wall castings, set the reinforcement to reduce casting wall thickness.