After the machine is used for a long time, the parts inside will be damaged, so we should pay attention to maintenance methods in peacetime, only in this way can we better ensure the operation of the machine and ensure the quality of our products. Of course, some minor failures are inevitable after a long time, and today we will understand what maintenance methods are available for the internal leakage failure of the hydraulic system in the four-column hydraulic press?
1, replace the pump housing or use the insert method to repair, to ensure that the hydraulic pump gear tooth top and the housing clearance within the specified range.
2. Ensure that the guide wire of the four-column hydraulic press can simultaneously deflect the two shaft bushings according to the rotation direction of the passive gear at an Angle, so that the two shaft bushings are closely fitted.
3, if the pressure sealing ring aging, should be replaced with a new part: pressure relief disc sealing rubber ring should be installed in the suction cavity (mouth) side (low pressure chamber), and ensure that there is a certain pre-tightening pressure. If installed on one side of the hydraulic chamber, the sealing rubber ring will soon be damaged, causing the high pressure chamber to communicate with the low pressure chamber, so that the hydraulic pump loses the ability to work.
4. Replace the sealing ring and sealing stop ring of the four-column hydraulic press. However, it should be noted that the surface of the selected sealing ring should be smooth; No wrinkles, no cracks, no pores, no scratches, etc.
5, if the loss of circle is not too serious, can be replaced by increasing the piston sealing ring to restore its tightness; If the error of roundness and cylindricity exceeds 0.05mm, the cylinder should be honed and the piston replaced to restore the normal clearance.
