Rubber hydraulic hoses are important components of hydraulic systems for construction machinery such as concrete trucks, road rollers, excavators, loaders, etc., and leaks, cracks, cracks, looseness, etc. are often encountered in use, but people often do not analyze the cause of the failure but only Simply replace the hose and repeat the same fault shortly after use. As a professional rubber tube manufacturer, let me introduce the common faults and solutions of the hydraulic hose reinforcement layer.
The hose is broken and the woven wire is rusted near the rupture
If the hose breaks, peel off the outer rubber layer and find that the wire is rusted near the crack. This is mainly due to the wet or corrosive substance of the outer rubber layer, which weakens the strength of the hose and causes cracking at high pressure. This occurs, usually accompanied by an outer layer of fracture, abrasion or severe deterioration, which causes the outer layer to lose its protective effect on the reinforcement layer. At this time, it is necessary to check and eliminate the mechanical damage, chemical corrosion and high temperature baking of the outer rubber layer, and then replace the hose. However, there is also a case where the outer rubber layer is kept good but the reinforcing layer is rusted and broken, and the rupture opening is usually within a range of 200 mm from the hose joint, and the reason is mostly that the joint is unacceptable, since moisture enters the inner edge of the outer casing, so that The reinforcing layer absorbs moisture, causing rust to cause the pressure resistance of the hose to decrease and rupture.
The hose reinforcement layer is not rusted, but irregular wire breakage
If the hose is broken, the outer layer is peeled off and no rust is found in the reinforcing layer, but the broken layer appears in the longitudinal direction of the reinforcing layer. The main reason is that the hose is subjected to high-frequency impact. There are many intersections between the steel wire and the steel wire of the braided reinforcing layer. When the pressure inside the pipe changes greatly, these intersections also shift with the change of the pipe diameter, so that the wires rub against each other. If the hose is subjected to high-frequency impact pressure, frequent friction will occur at the intersection, causing the wire to break. For hoses that are frequently subjected to high frequency impact, a wire wound frame should be used as the reinforcement layer.