THE ISSUE OF DETERMINING THE LOCKING FORCE OF A HPDC MACHINE

In the high-pressure die casting machines, the locking force is a parameter that determines the size of the machine. For the safe operation of the machines, it is necessary that the die is locked perfectly, which ensures compliance with the dimensional tolerances of the cast and prevents metal from spraying out of the parting plane. The submitted contribution is devoted to the issue determining the adequate locking force of the machine and describes the recommended methodology for determining its size and the resulting area of application. Based on the dimensions of the gating system, the dimensions of the die frame cavity insert are calculated. By determining the center of the cavity insert and the center of the gating system, the position of the carriers of the opening and locking force are determined. In order to unify the carriers of the opening and locking force, the gating system is modified. It is proven that the unification of the centers eliminates the momentary rotating effect of forces not lying on one carrier, and at the same time, the modification of the gating system contributed to the reduction of the gas entrapment in the volume of the high pressure die cast.