Precautions for adjusting pressure of four-column hydraulic press

In order to play a better role in the use of four-column hydraulic press, we will often adjust the pressure in the process of use, and the pressure, parameters include nominal pressure and push out pressure and return pressure three, then the legal measurement of pressure is Pa, then here Xiaobian should remind you to pay attention to safety, In order to avoid any material falling into the four-column hydraulic press workbench resulting in internal accidents, it is necessary to pay attention to the following matters.

The system pressure of a four-column hydraulic press can not be higher than the pump pressure, except when it is increased

Second, often whether the four-column hydraulic press is tested depends on the load, which is automatically generated, and is not debutted by itself, and the fixed pressure should be the maximum pressure value of the normal work of the hydraulic press

Third, we will lower the pressure of the relief valve, the middle of the throttle valve and the reversing valve close the outlet of the pump, debug the relief valve, the maximum working pressure of the hydraulic press is a nominal pressure is a fixed number; The minimum pressure of hydraulic cylinder working movement is the top output; The minimum pressure of the cylinder back or back is the return force; In simple terms, the tonnage of the four-column hydraulic press is converted into Kg, and then multiplied by 9.8N/Kg is the nominal force of the hydraulic press, which is divided by the total working area of the hydraulic press working plunger to obtain the maximum pressure of the working liquid.