The use of high-pressure hoses

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The use of high-pressure hoses is very common. I don’t know how much customers know about the basic conditions of high-pressure hoses. Let’s take a look: The layout of high-pressure hoses should try to avoid heat sources and keep away from the performance of the engine exhaust pipe. If necessary, devices such as sleeves or protective screens can be used to prevent the hose from deteriorating due to heat. Where the high-pressure hose crosses or may rub against the mechanical surface during work, protective devices such as hose clamps or springs should be used to prevent the outer layer of the hose from being damaged.

When the hose is bent, the bending radius should not be too small, and should be greater than 9 times the outer diameter. There should be a straight section at the connection between the high-pressure rubber hose and the joint that is twice the outer diameter of the hose. Do not twist the high pressure hose during its installation. Slight torsion of the high-pressure hose may reduce its strength and loosen the joint. When assembling, the joint should be tightened on the hose instead of the hose on the joint. The vulcanization of the high-pressure rubber hose does not reach positive vulcanization, and the manifestation is under-sulfur or over-sulfur.

Due to the above two reasons, its various attributes and functions cannot meet the requirements, resulting in problems during use. The wall thickness of the high-pressure hose is uneven, especially the inner rubber layer. The steel wire weaving or winding process did not follow the design process, the braiding angle did not reach 54 degrees 44 minutes, the steel wire weaving was too tight or too loose, and the deformation of the high-pressure hose (after pressurization) (deformation of elongation, shortening or bending) larger.

The poor airtightness of the outer layer of rubber leads to corrosion of the steel wire, and the poor sealing of the inner layer of rubber makes it easy for high-pressure oil to enter the steel wire layer. Adhesion between the rubber layer and the steel wire layer is insufficient.