How to ensure that the tensile strength of fire hose is not easy to break under high-load working conditions?
Publish Time: 2025-04-01
The tensile strength of fire hose is crucial to its stability and durability under high-load working conditions.
1. Material selection and manufacturing process
High-performance materials: Modern fire hoses are usually made of new materials such as EPDM rubber, thermoplastic polyurethane elastomer and nitrile rubber double-sided adhesive, which have made significant improvements in durability, anti-aging and environmental protection. The selection of materials needs to consider its tensile breaking strength and elongation at break to ensure that the hose is not easy to break when subjected to high loads.
Manufacturing process: The fabric layer of the hose should be woven evenly, the surface should be neat, without double warp skipping, double warp breakage, weft skipping and scratches to ensure the strength of the overall structure. The thickness of the hose lining (or covering layer) should be uniform, the surface should be smooth and flat, without wrinkles or other defects, to improve its wear resistance and tensile strength.
2. Tensile strength standard
Clear standards: The tensile strength standard of fire hose varies according to the diameter of the hose. Generally speaking, the tensile strength of a smaller diameter hose should reach 5500N, while the tensile strength of a larger diameter hose should be higher, reaching 7500N. These standards ensure that the hose can withstand at least the specified value of tension without breaking during the tensile test.
Actual test: During the production process, the hose should be subjected to strict tensile strength tests to ensure that it meets the relevant standards. During the test, the actual working conditions, such as temperature and humidity, should be simulated to more accurately evaluate the performance of the hose.
3. Design and use precautions
Reasonable design: The design of the hose should take into account its resistance to high pressure, wear and mildew, etc., to adapt to various complex working environments. The inner diameter, length and dimensional tolerance of the hose should comply with the regulations to ensure its stability and reliability during use.
Correct use: When laying the hose, avoid sharp twists and turns to prevent reducing its water pressure resistance and tensile strength. After filling with water, the hose should not be dragged on the ground, especially to avoid contact with sharp objects such as nails and glass pieces to reduce wear and damage. The hose should be kept away from corrosive chemicals such as oils, acids, and alkalis to prevent its performance from deteriorating.
Regular maintenance: Regularly inspect and maintain the hose to detect and repair potential damage and defects in a timely manner. After use, the hose should be thoroughly cleaned and dried, then coiled and stored in a cool and dry place to extend its service life.
In summary, through the selection of high-performance materials and optimization of manufacturing processes, clear and compliance with tensile strength standards, reasonable design, and correct use and maintenance methods, it can be ensured that the fire hose is not easy to break under high-load working conditions, thereby ensuring the smooth progress of firefighting work.
