Automobile silicone hose is used to transport gas, liquid, paddle or granular materials. It is composed of inner and outer rubber layer and skeleton layer. The material of the skeleton layer can be cotton fiber, various synthetic fibers, carbon fiber or asbestos, steel wire, etc. Generally, the inner and outer layers of automobile silicone hose are made of natural rubber, styrene-butadiene rubber or butadiene rubber.
The oil-resistant silicone hose is made of neoprene, rubber, acid and alkali resistant, and the high temperature resistant silicone hose is made of ethylene-propylene rubber, fluorine rubber or silicone rubber.
Because of its flexibility, cushioning, light weight, and convenient installation and usage, it has a wide range of uses, such as irrigation and drainage of farmland in agriculture, suction and discharge of mud paddles in port dredging, hydraulic systems and pneumatic systems in aircraft, tanks, automobiles and many mechanical equipment , The fuel system uses many silicone hoses.
The inner rubber layer of the automobile silicone hose directly bears the wear and erosion of the conveying medium and prevents its leakage.
The outer rubber layer protects the skeleton layer from external damage and erosion. The skeleton layer is the pressure-bearing layer of the rubber tube, giving the tube body strength and rigidity. The working pressure depends on the material and structure of the framework layer.
According to the material structure of the skeleton layer, it can be divided into full rubber hose (no fabric material), cloth hose (the skeleton layer is a cloth layer), suction hose (there is a metal spiral outside the cloth layer), and braided hose (the skeleton layer is woven Steel wire or fabric), winding hose (the skeleton layer is a steel wire or rope winding layer), knitted hose (the skeleton layer is a knitted fabric), short fiber hose (short fiber and rubber are blended and pressed).
Among them, the suction hose works under negative pressure, and the steel wire braided hose or winding hose can withstand 80 or even higher pressure.
The basic processes for the production of automotive silicone hoses are rubber compound processing, clothes and canvas processing, hose molding, vulcanization, etc. For hoses with different structures and different skeletons, the processing methods of the skeleton layer and the hose forming equipment are different.
Since the full silicone hose does not contain layer, it only needs to be extruded with an extruder. The cloth-filled hose needs to use a molding machine that wraps the silicone cloth on the inner silicone layer. The suction hose needs to be wrapped with a metal spiral and then covered with rubber during forming.
The knitting and winding hose needs to use a special fabric knitting machine or winding machine, and the knitted hose needs to use a loom.
