The oil layer and steel wire layer of high-pressure steel wire braided rubber hose have the ability to withstand pressure on the conveying medium. The following are the precautions for quality inspection of rubber hoses.

1. Standardization scale and practical errors

Because the inner and outer diameters of the high-pressure hose and the outer diameter of the skeleton layer will fluctuate, if the scale of the fluctuation exceeds the limit, it will be difficult to ensure the balance of the clamping amount of the hose joint, and the quality of the hose assembly will be difficult to ensure. Therefore, for the production of rubber hose assemblies, strict inspection should be carried out to ensure that the inner diameter and outer diameter of the skeleton layer meet the requirements, and the outer diameter error can be appropriately relaxed.

2. Wall thickness error

Due to the influence of the bonding width between the inner adhesive layer and the skeleton layer during quality inspection, the wall thickness error of the rubber hose can be too large. If the wall thickness error exceeds the scale, it will affect the subsequent sealing and pull-out strength, and even cause some deviation of the hose assembly joint. Therefore, the error of the hose wall thickness is strictly controlled. Generally, when the wall thickness error exceeds 0.5mm, the hose should be selected with caution.

3. Adhesion between layers

The high-pressure steel wire braided rubber hose has outstanding integrity, which means that there should be high adhesion between each structural layer during quality inspection, and the adhesive between each adhesive layer should become a whole. Only in this way can we get used to the various technical requirements during the installation and crimping process of the joint, and ensure that the quality inspection of the hose assembly meets the requirements. Therefore, there is a rule that the adhesion between the layers of the control hose cannot be lower than the technical specifications, and high adhesion hoses should be selected as much as possible for the production of hose assemblies.

4. Appearance quality

The appearance quality of the hose cannot be ignored, as it not only affects the quality inspection and appearance quality of the hose assembly, but also affects the quality of its use. If there are bubbles, pores, or mechanical damage in the outer rubber layer, it will expose the skeleton layer, form rust on the skeleton layer, reduce the pressure resistance strength of the hose, directly affect the service life of the hose assembly, and even cause accidents during use.

The above are the precautions for quality inspection of high-pressure steel wire braided rubber hoses. The quality of the hose should be carefully checked to identify any appearance defects that may affect its overall performance.