Composition, specification and performance of steel wire in wire reinforced hose

Composition, specification and performance of steel wire in wire braided hoseSteel wire rubber hoses are suitable for hoses using petroleum-based hydraulic fluids in the temperature range -40°C to +121°C (-40°F to +250°F), for high temperature and medium pressure hoses under harsh conditions.Steel wire plays a very important role in the working process of the hose braiding machine:The overall performance requirements of the steel wire for braiding and winding rubber hoses are high strength, good toughness, small elongation and good pulse fatigue resistance. Therefore, high strength steel wire drawn from No. 70 high carbon steel is usually used.Ply wire rope is made of multiple steel wire twisting, requiring even twisting, not loose, no stress, flat and soft; And pay attention to the surface clean, not rust and pollution.Large diameter rubber hose reinforcement helix steel wire is a round cold drawn steel wire,w(C) is 0.35% ~ 0.60%, the steel wire should have appropriate modulus and strength, as well as good toughness, to avoid the wire in the winding process brittle break. In order to prevent corrosion on the surface of the steel wire, anti-rust copper coating should be coated during processing.Oil hose, drilling hose and some large diameter hose use flat steel wire as the skeleton material, the general amount is less.Steel wire is an important component of reinforced rubber hose. It plays a key role in the hose to withstand pressure, pulse, shock and flexure. It should be said that without steel wire it is impossible to have high pressure, ultra-high pressure and special large diameter rubber hoses. Although the strength of arylamide fiber is higher than that of steel wire, the volume mass is lower than that of steel wire, and the resistance to high temperature shows its advantages in some applications, but the enhanced position of steel wire is irreplaceable. China's rubber hose industry needs high-quality steel wire with high tensile strength and high toughness, and it needs steel wire with good comprehensive performance.The wire spiral rubber hose is composed of a heat-resistant oil synthetic rubber inner layer, 4 layers of wire wound layer and a layer of oil-resistant and weather-resistant synthetic rubber outer layer. Hose implements SAE100R12 standard, GB/T10544-2013 standard.