1. Automobile cooling water pipe
The main function of the car cooling system is to timely dissipate the heat absorbed by the heated parts, ensuring that the engine operates at the most suitable temperature state. The cooling water hose is a flexible pipeline connecting the car engine and radiator. Its main function is to transport coolant, dissipate heat, and ensure the safe and normal operation of the engine.
At present, the working temperature of domestic cooling water rubber hose reaches 125 ℃, and EPDM rubber vulcanized with sulfur is used for production. The rubber hose includes a three-layer structure of inner lining (EPDM), reinforcement layer and outer layer (EPDM).
2. Automotive air conditioning hose
The inner rubber layer of automobile air conditioning hose is made of EPDM rubber, the reinforcing layer is woven with polyester fiber, and the outer rubber layer is EPDM, extruded and coated. It has the advantages of low permeability and high temperature resistance, and can be used in environments ranging from -40 to 140 ℃, and even in high temperature environments ranging from 160 ℃. Automotive air conditioning hose is a highly demanding hose product with a key technical indicator of low permeability.
3. Automotive brake hose
In addition to being resistant to brake fluid, automotive brake hose must also have good aging resistance and moisture permeability. Previously, Styrene-butadiene was the main material used for the inner rubber layer of automobile brake hose. Recently, EPDM rubber or EPDM rubber/Butyl rubber has the tendency to replace Styrene-butadiene due to the appearance of maintenance free cars, the increase of the working environment temperature of brake fluid and the use of high boiling point brake fluid.
Qinghe Changcheng EPDM rubber hose is all made of imported EPDM rubber, which has good wear resistance, aging resistance, acid and alkali corrosion resistance, good air tightness, and no change in appearance after nearly 100 hours in 230 ℃ Superheated steam; It is mainly used for transporting water, air, antifreeze, steam and weak acid and alkali liquid in automobile, mechanical water tank, engine, radiator, Fan heater and other parts.
Post time: Jul-13-2023