The main reason of oil temperature rise of four-column hydraulic press

Four-column oil pressure oil temperature should be appropriate. The oil temperature of the tank can not exceed 60 ° C, and it is more suitable to work within the range of 35 ~ 55 ° C. From the point of view of maintenance, the oil temperature should also be absolutely avoided. If there is an abnormal rise in oil temperature, it should be checked.

Common reasons are as follows:

1. The viscosity of oil is too high.

2. Oil quality deteriorates and resistance increases.

3. The performance of the cooler is not good, such as insufficient water, scale in the pipeline, etc.

4. The air in the loop should be completely removed. After entering the air in the loop, because the volume of the gas is inversely proportional to the pressure, so with the change of the load, the movement of the hydraulic cylinder is also affected, so the air should be especially avoided). In addition, air is an important reason for oil deterioration and heating.

The oil temperature rise of four-column hydraulic press should pay special attention to the following matters:

① After the inlet filter is blocked, the suction resistance is greatly increased, and the air dissolved in the oil is separated, resulting in the so-called cavitation phenomenon;

② Suction pipe and pump shaft seal parts below atmospheric pressure should be careful not to leak into the air;

When the four-column hydraulic press starts the hydraulic pump for the first time or does not operate for a long time, the following matters should be noted:

① Fill the pump with working medium;

② Check whether the rotation direction is correct;

When the four-column hydraulic press starts the hydraulic pump at low temperature, the following matters should be noted:

When starting the hydraulic pump in cold areas or winter, it should be started and stopped, reciprocating several times to make the oil temperature rise, and the hydraulic device runs flexibly before entering formal operation.