This paper introduces hydraulic vibration-exciting system for marble moulding machine, and pats forward rational selection method of vibration. parameter for the system controlled by rotary valve.

Fault diagnosis and with skilled maintenance technique for the hydraulic system of plastic-injection moulding machine ensure that the plastic-injection moulding machine works efficiently and reliably.

Fault diagnosis and maintenance technique for the hydraulic system of plastic-injection moulding machine are analytical from theory to practice in this paper.