The manufacturing process of automotive silicone hoses mainly includes the following steps:
Raw Material Preparation: The main raw materials for automotive silicone hoses include silicone rubber, fillers, additives, and vulcanizing agents. Silicone rubber is the main material of the silicone hose. Fillers increase the hardness and strength of the silicone hose, additives improve processing performance and heat resistance, and vulcanizing agents maintain the stability of the silicone hose at high temperatures.
Raw Material Mixing: Silicone rubber, fillers, additives, and vulcanizing agents are mixed evenly according to the formula to form a compound. Mixing time and temperature need to be controlled during the mixing process to ensure the mixture melts and has good flowability.
Extrusion Molding: The mixture is extruded through an extruder. The design and preparation of the die directly affect the shape and size of the silicone hose. Extrusion speed and pressure need to be controlled during the extrusion process to ensure dimensional and shape accuracy.
High-Temperature Vulcanization: The extruded silicone hose needs to undergo vulcanization treatment, usually in a high-temperature oven. Controlling the vulcanization time and temperature is extremely critical to ensure the elasticity and heat resistance of the silicone hose.
