There are many types of high-pressure steel wire spiral hoses available in the sales market. Users can make selections based on their specific development trends. Regarding their application, it is helpful to understand the following precautions.
The main precautions for using high-pressure steel wire spiral hoses are as follows:
The bending radius of the hose must not be smaller than the specified minimum bending radius to prevent damage to the hose structure or premature wear caused by excessive stretching.
When selecting high-pressure steel wire spiral hoses, the appropriate hose type and technical specifications should be chosen based on the application standards. Misuse or unauthorized substitution must be avoided.
If the working location changes, the hoses should be lifted during transport and dragging on the ground should be avoided as much as possible. This prevents scratches on the outer cover that could lead to the corrosion of the reinforcement layer.
When transporting corrosive liquids, the inside of the hose must be thoroughly cleaned after use to prevent residual substances from causing long-term corrosion of the hose body. Alternatively, hoses specifically designed for such media can be used.
Application and Inspection Precautions:
Before use, check whether the product specifications and length meet the required standards, and conduct a sample working pressure test. The hose can only be used after passing the test.
Check whether any steel wires are exposed at the connection between the fitting and the hose, and whether the outer rubber cover shows signs of crushing. If any of these conditions are present, the hose must not be used. (Note: The phrase "industrial dryer" in the original text appears to be an unrelated typo and has been omitted for logical accuracy.)
The coating at the top connection of the fitting must not be damaged or exposed. If exposed, the hose must not be used to prevent loose sealing and subsequent fluid leakage.
For newly installed hoses, the inner wall must be cleaned to prevent rubber debris and dirt from entering the hydraulic system. (Note: "Four-column hydraulic press" in the original text has been generalized to "hydraulic system" to fit the broader context.)
Installation Requirements:
Twisting the hose during connection must be avoided to prevent changes in the stress points of the reinforcement layer, which could lead to premature wear.
After connection, the hose length should have a certain amount of slack to prevent changes in length due to tensile forces, which would reduce its pressure-bearing capacity.
The fixed clamps for the hose should be placed along the straight line where the trend line and the straight line intersect. The clamps must neither bend the hose nor be too loose.
When connecting moving parts, sufficient length must be allowed to prevent the hose from being affected during movement.
The bending radius during connection must comply with the relevant specified requirements.
High-pressure steel wire spiral hoses are widely used in hydraulic supports. Each support typically uses approximately 10 to 30 hoses. Therefore, the structure, usage methods, and connection methods of these hoses will directly affect the operational stability of the supports.