Simulation of sand casting for gear oil pump housing

The simulation process includes the steps of establishing the three-dimensional solid model of sand casting, mesh division, determining the thermophysical properties of materials, initial and boundary conditions, solidification numerical simulation calculation and the display of casting sand casting defect results, which mainly requires the simulation of pouring process and the display of sand casting defect results.

First, ProCAST is used to accurately model the pattern and gating system (including sand mold, etc.), mainly to simulate the filling process of sand mold castings and the filling results, and analyze whether the gating system design of sand mold castings is reasonable and possible defects, so as to improve the molding quality of sand mold castings.

The filling and cooling of sand mold casting is a process that changes at all times. The flow of molten metal in the mold cavity and the change of temperature can also be seen from it. The filling process is 2.5 s, as shown in Figure 1, and the cooling process is 200 s, as shown in Figure 2.

After completing the preliminary analysis of sand castings, the gating system of sand castings is designed, and then the mold filling process is simulated, and the temperature distribution and changes during the mold filling process are observed, so as to improve the process design. It can be seen from the temperature distribution and change during the filling process that this scheme is reasonable.