Universal Law of Shrinkage of Die Casting

The casting structure is complex, Core more, The shrinkage rate is small when the shrinkage of obstruction is larger，On the contrary, the shrinkage rate is larger

The radial dimension of the casting core is in the direction of obstruction and the shrinkage rate is small, while the dimension parallel to the axis of the core is in the direction of free shrinkage and the shrinkage rate is large

The shrinkage rate of thin-walled castings is smaller, while that of thick-walled castings is larger.

The higher the temperature of casting demoulding, the greater the temperature difference between casting and room temperature, the higher the shrinkage rate

When the casting size of the submerging part is hindered by the submerging part, the shrinkage rate is small.

Different parts of the same casting, even if the same condition of shrinkage obstruction, due to temperature imbalance, shrinkage rate is not consistent. The casting near the gate has a high temperature and a large shrinkage rate, while the casting far from the gate has a low temperature and a small shrinkage rate