Design and simulation optimization of casting process scheme for upper half casting of front bearing seat
The upper half of the front bearing seat belongs to the shell class member,the two sides are symmetrical,but the wall thickness is uneven,and the material is HT250.The structural characteristics of the casting were analyzed,and two bottom-injection pouring schemes were formulated from the bottom surface and the top surface of the bearing seat respectively,and the parting surface was on the bottom surface of the bearing seat.Through the analysis of the temperature field,velocity field and defects of the two schemes,it can he seen that the defects poured from the top surface of the hearing seat are large and not conducive to elimination,so the scheme poured from the bottom surface of the hearing seat is selected and optimized.In view of the defects such as concave,porosity,and porosity generated during the casting process,risers and cold iron were added and optimized.In the end,almost all the defects in the casting are eliminated,and the larger defects are concentrated in the gating system,which has no impact on the casting.
Casting processGray iron partsPouring systemRiserNumerical simulation
NETL
NSTL
万方数据
维普
