The wire winding hose is composed of an inner rubber layer, a reinforcement layer and an outer rubber layer. The reinforcement layer is made of steel wire, which can enhance the hose's pressure resistance and wear resistance. The inner rubber layer is usually made of synthetic rubber, which is resistant to oil, acid, alkali and high temperature. Common outer rubber layer materials include synthetic rubber, nitrile rubber, polyurethane, etc.
Spiral wire winding hoses are widely used in industry and agriculture. However, in actual use, many users report that the problem of hose delamination often occurs, which brings great troubles to production and maintenance.
1. Problem: The whole batch of rubber delaminated
Cause: Formula design problem
Solution: Adjust the formula in time
2. Problem: The whole batch of rubber is delaminated, the steel wire layer is black or yellow
Cause: High moisture content in raw materials or low surface activity of white carbon black
Solution: Replace the raw materials
3. Problem: The outer rubber material in the delaminated part has obvious flow phenomenon
Cause: Rubber burning
Solution: Increase the scorching time, reduce the roller temperature, reduce the storage time of the vulcanized rubber, reduce the extrusion temperature
4. Problem: There is oil stain, and the steel wire appears yellow after wiping off the oil stain
Cause: The steel wire layer is oily
Solution: The steel wire layer should be washed with gasoline before wrapping the outer rubber
5. Problem: The steel wire appears red
Cause: The steel wire layer to rust
Solution: Keep it dry and shorten the storage time of the wrapped hose
6. Problem: Black steel wire layer with moisture
Cause: Water in the steel wire layer
Solution: The steel wire layer should be dried before wrapping the outer rubber
7. Problem: The whole batch of defective products with the same formula has a small extraction force
Cause: The coating content on the surface of the steel wire does not match the formula
Solution: The steel wire manufacturer should be changed or the manufacturer should be required to meet the parameter requirements
8. Problem: The steel wire layer is yellow, and it is more severe outside the vulcanization drum
Cause: It should be over-sulfurized
Solution: Reduced the vulcanization time
9. Problem: One side is delaminated, while the other layer is well bonded
Cause: Uneven tension of the water cloth
Solution: Adjust the tension of water cloth
10. Problem: There is rubber on the water cloth
Cause: The outer rubber and the water cloth are too sticky
Solution: Adjust the outer rubber formula or soak the water cloth in an isolation agent
11. Problem: The mark at the delamination is distorted
Cause: The outer rubber is empty and the mouth and core are improperly selected
Solution: Improve the outer rubber wrapping process and select suitable mouth and core shapes
12. Problem: The outer rubber of the hose head-section is delaminated
Cause: The outer rubber is water-infiltrated or the water cloth is wrapped tightly, resulting in steam entering during vulcanization
Solution: When wrapping the outer rubber, prevent water from entering the hose head, and wrap the head tightly when wrapping the water cloth
13. Problem: Hose head - rubber separation layer in the section
Cause: Steam entering when the wire layer shrinks or vulcanizes when the head is not wrapped tightly after winding
Solution: Wrap the hose head tightly immediately after winding
The above is an analysis of some common quality problems and solutions of wire winding hoses. Only by strictly controlling each link can the quality of wire-windind hoses be guaranteed and the risks of use be reduced.
