A pre-processing program for numerical simulation of squeezing casting was developed

which was successfully employed to the pre-processing mesh generation of a squeezing casting housing. Through developing key technologies for treatment of OpenGL image to rapidly draw the image and eliminate the hidden lines

the desirable image was visualized. Through micro-vibration method shifting odd point to modify the hole or cavity defects in the STL files

discrete treatment of uniform mesh generation in the housing was realized. The results verify that the pre-processing program exhibits reliable and effective and available.