The effect of the cutting machine oil pump and the introduction of [Ponse machine]
Hydraulic pump mainly depends on the movement of pump chamber volume changes, thereby compressing the fluid to make the fluid have pressure energy. The prerequisite for this movement is that the pump chamber has a sealed volume change.
Initial stage of wear:
During the manufacturing process of a part, the surface of the metal part has a certain micro unevenness (surface roughness) axis or the existence of ellipticity and straightness of the shaft or hole. In the initial relative movement of the metal surface, the pump parts are relatively high moving. At this time, the friction pairs will have slight friction and wear, and the parts are in the initial stage of wear. .
Normal wear stage:
After a period of running in, friction between the pairs of new, higher precision roughness, wear rate slowed down. Enter a relatively long period of stable use.
Abnormal wear stage:
In this stage, the metal material reaches the rated life of the fatigue cycle, the metal surface will produce fatigue layer, and the fatigue layer will easily fall off on the metal surface under the special use state of the high temperature and high pressure of the pump. Therefore, the wear and tear increase rapidly, and finally causes the failure of the parts.