What harm will be caused if the hydraulic oil of Hydraulic Press Machine is contaminated?

    The main ways that the Deep Drawing Hydraulic Press oil is contaminated are that the oil tank cap is subjected to alternate cooling and heating, causing moisture in the air to condense into water droplets that fall into the oil tank; damage to the cooler or heat exchanger seal, or rupture of the cooling pipe, causing water to seep into the oil; the hydraulic cylinder piston rod is not sealed tightly, causing humid air entering the system to condense into water droplets; when the hydraulic press uses oil, moisture enters or the oil becomes damp, and the relationship with water is very close.

 

　   The hazards caused by contamination of hydraulic oil mainly include the following points. Everyone must pay attention during use.

　　1. Moisture reacts with certain additives in the engine oil to produce precipitation, colloids and other pollutants, thereby accelerating the aging of the engine oil; sulfur and chlorine in water and oil will produce sulfuric acid and hydrochloric acid, which will intensify the wear of components and accelerate its corrosion. Oxidative deterioration of oil can even produce a large amount of sludge.

 

　　2. Water pollutants and oxidation products become catalysts for further oxidation, causing blockage or blockage of hydraulic components, causing the hydraulic system of the four-column hydraulic press to malfunction, blocking the oil distribution pipe, and reducing efficiency. A series of blockages such as the cooler, such as a faulty oil filter.

 

　　3. When a certain amount of water is mixed into the hydraulic oil of 20T Hydraulic Press Machine, the hydraulic oil will emulsify into a turbid state. If the hydraulic oil itself has poor anti-emulsification ability, the water cannot be separated from the oil after standing for a period of time, so the oil is always white and turbid. In this state, the white turbid emulsified oil enters the hydraulic system of the four-column hydraulic press, which will not only cause the hydraulic components to rust, but also reduce the lubrication performance of the hydraulic components, thereby aggravating the wear of parts and reducing system efficiency.

 

4. When the iron metal in the hydraulic system of Hydraulic Hot Pressing Press rusts, the flaking rust will flow in the hydraulic system pipes and hydraulic components and spread, causing the entire system to rust, thereby generating more flaking rust and oxides.

 

　　The main reason for the failure of the 50T Hydraulic Press Machine plunger is the deformation of the cylinder bore. When assembling the hydraulic press, the upper steel ball falls off. When the pump is turned on, the end face of the cylinder is stuck, causing the plunger to die due to deformation. Of course, there are other reasons, such as damage to the center return spring of the Hydraulic Press Machine and damage to the cylinder support roller bearing, which will cause the hydraulic press plunger to be bitten or the pump to be damaged.

 

     Once the Hydraulic Stamping Press plunger is found to be bitten, all major parts such as the hydraulic cylinder must be removed for inspection. If there is little hope of repairing the damaged part, it can be replaced directly; the hydraulic press has been running for a long time, causing the plunger to wear too much, the gap is too large, the pressure cannot be increased under high pressure or the oil output is insufficient, the hydraulic press plunger has low heat treatment hardness, the material does not meet the requirements, or the cylinder surface roughness is high. The severely worn plunger and cylinder sleeve can be replaced. If the deformation of the cylinder bore is not very serious, the method of fine processing or grinding can be used to make its shape and position accuracy meet the tolerance requirements.