In the normal operation of four column hydraulic press equipment, its processing use is mainly through the hydraulic pump to transport the static pressure of hydraulic oil for workpiece processing. The four column hydraulic press used by processing and manufacturing enterprises generally selects hydraulic press with a tonnage of more than 100. These types of four column hydraulic press generally use hydraulic cartridge valve. Therefore, when the workpiece is produced, it is often in case of abnormal hydraulic operation. The following, hydraulic press manufacturers for you to further analyze the main causes of hydraulic problems.
First of all, the main reason for the four column hydraulic press fault is that the main relief valve in the hydraulic system is seriously worn, resulting in debris. Hydraulic opportunity card owner. Hydraulic oil pump flow is not normal, as a result, the flow and pressure of the hydraulic pump form a back impact phenomenon. The flushing valve on the upper part of the hydraulic cylinder is not opened, so it can not rise normally. The lower chamber directional valve of the hydraulic system is fixed, and the hydraulic oil enters the upper and lower system together. The valve core of the filling valve of the hydraulic system is stuck, which may be caused by foreign matters or cracking of the tension spring.
Secondly, the four column hydraulic press circuit fault will also form the hydraulic press can not work normally, advocated the use of a screw driver on the two ends of the directional valve to see if it can be stuck, and then test whether the small valve indicator light is normal. Whether the four column hydraulic press system is balanced for movement. In addition, if the hydraulic pressure of the hydraulic system is normal, the worst result is whether the hydraulic cylinder is damaged.
