Many people are not clear about how to prevent leakage and common faults of CNC hydraulic press. Then we need CNC hydraulic press manufacturers to introduce them in detail!

Generally speaking, the common leakage fault of CNC hydraulic press refers to the leakage of CNC hydraulic press beyond the allowable range. Numerical control hydraulic press often has shortcomings when leakage occurs. It is basically impossible to make the hydraulic machinery leak free. This is because in CNC hydraulic machines and hydraulic components, there is always a gap because of the production and processing deviation and the relative speed regulation of the mating surface. When the hydraulic oil flows through this gap, it will cause leakage. There are two ways of leakage: first, the leakage of hydraulic oil from high-pressure area to low-voltage area is internal leakage; Second, the leakage of hydraulic oil in the CNC hydraulic press to the outside of the CNC hydraulic press is external leakage.

Leakage will reduce the efficiency of CNC hydraulic press and pollute the environment; The damage of internal leakage becomes energy, which makes the oil temperature of system software high and endangers the characteristics of hydraulic components and the normal operation of hydraulic transmission system; Leakage is also likely to cause fire accidents.

Because the leakage injury is serious, leakage control is the key work in the application of hydraulic machinery. Measures are often taken at the following levels.

Gap leakage is the key way of leakage of CNC hydraulic press, the size of leakage and the pressure difference on both sides of the gap, liquid viscosity and the length of the gap. The total width is equivalent to the height, especially the height of the gap is more serious to the leakage, and its leakage is positively related to the cubic of the gap height. Therefore, when designing the scheme and manufacturing hydraulic components, the gap height should be reduced as much as possible under the allowable standards of structure and processing technology.

Because the surface roughness of the parts of the NC hydraulic press makes it impossible for the two closely connected surfaces to touch each point, there are many porosity with various cross-sectional shapes and impossible sizes in the external economic concave where the two surfaces touch left and right. Therefore, under the effect of differential pressure, the hydraulic oil leaks according to this porosity. Therefore, for each rear cover plate of the hydraulic element Ensure the surface roughness of tight connection surfaces such as flange joints and flat plate connections; Moreover, during installation, the tightening range is large enough to ensure that the screws are tightened firmly and avoid skew of the welding surface.