How to set the clamping force of injection molding machine?

Clamping force F & gt=k*P*A\x0d\F= actual clamping force (kn) 1kg = 9.8n \ x0d \ p = average cavity pressure (MPa) 1mpa = 9.8kg \ x0d \ a = the product is on the parting surface. \x0d\ injection pressure = 1.5* mold pressure \ x0d \ grade mold pressure (kg/cm2)\x0d\ precision product 550-700\x0d\ ordinary product 350-500\x0d\ inferior product 250-