Aiming at the characteristics of structure and performance of pump body in high pressure gear pump

squeezing casting was employed to manufacture the pump body

and the optimized die structure parameters and processing parameters were provided. It was feasible for manufacturing gear pump by direct squeezing casting. The leakage of the manufacrured gear pump can not be found at the pressure of 25 MPa

and the blast pressure is more than 60 MPa

saving more than 15% materials.