In the actual production of castings, there will be many defects, so the design and optimization of casting process scheme is very important to the actual production of castings. The quality of casting process scheme will have an important impact on product quality.

(1) The open bottom pouring system is adopted in the casting process scheme of the seat, and the section proportion of the sprue, transverse sprue and inner sprue is reasonable, which ensures stable mold filling and strong feeding capacity.

(2) After numerical simulation, the feeding channel remains unblocked and the feeding function is improved.

(3) The probability parameter defect distribution shows that there are no shrinkage porosity and shrinkage cavity defects in the casting, which can meet the requirements of production and practical use.

The outline dimension of zg310 – 570 seat body parts is 1160mm × 1430mm × 810mm, 2600kg, large. The overall structure of the parts is complex and the casting difficulty coefficient is large. The main part contains one long shaft hole and two half holes, which need sand core forming. The bottom is a large platform with four stiffeners and a thin-walled structure. The seat has the characteristics of complex structure and many thin-walled ribs. In the casting process, it is easy to have defects such as under casting, shrinkage cavity, shrinkage porosity, deformation and hot crack, which affect the qualified rate of products. Therefore, the numerical simulation software AnyCasting is used to simulate the temperature field and casting process of the seat to reduce the probability of defects and improve the casting quality.