Hydraulic pipes are common parts in production and life, but hydraulic hoses often have various failures during use. A large part of the faults are caused by the inner rubber layer. As a professional hydraulic pipe manufacturer, the following is for everyone. Introduce common faults and solutions for the inner rubber layer of hydraulic pipes.
Hydraulic hose inner layer is hard and cracked
The plastic is added to the rubber product to make the hose flexible and malleable. The hydraulic hose works under high temperature and high pressure, and the hose overheats, which will cause plasticizer to overflow. In addition, when the superheated oil passes through the cylinders, valves or other components in the system, if a large pressure drop occurs, the oil will be decomposed, resulting in oxidation and hardening of the rubber layer inside the hose. In this case, first check whether the working temperature of the hydraulic system is normal, the throttle of the valve, the suction passage of the pump is smooth, etc., and replace the hose after removing all the factors that may cause the oil temperature to be too high and the oil to decompose. If only the inner rubber under the rupture port of the hose is hard and the upper part is kept good, this means that the rupture of the hose is excessively squeezed, bent too fast or twisted, which causes the oil to heat up and accelerate oxidation, resulting in hardening of the inner rubber.
The inner layer of the hydraulic hose is seriously deteriorated and obviously swells
The reason why the rubber layer in the hose is seriously deteriorated and obviously swelled is because the hydraulic oil used time is overdue or the oxidized and degraded dirt exists in the hydraulic system, the hose is chemically deteriorated, and the broken rubber piece is found at the oil return port. . If this happens, check the physical and chemical indicators of the hydraulic oil, check the compatibility of the system oil and the rubber material inside the hose and check whether the working temperature meets the standard.
The above is the type of failure that often occurs in the inner layer of the hydraulic hose. I hope it will help everyone.