The four column hydraulic press uses hydraulic oil to transmit energy to complete some mechanical actions. When it comes into contact with raw materials during the operation, vibration will occur.

　　The hydraulic system pipeline and oil tank of the hydraulic press are relatively clean, and the cleaning oil can be used with the viscosity of the working fluid. If the system is found to be dirty, the cleaning may be slightly low viscosity oil for cleani

　　一、As the pressure of the four column hydraulic press increases, the gas in the oil becomes bubbles. When the pressure rises to a certain limit value, the bubbles rupture at high temperatures, rapidly acting on the surface of the parts.