The key technology of composite insulators manufactured

        The key composite insulator manufacturing process are: selection of materials and processing technology umbrella, the mandrel and sheath material selection process, metal decapitated selection and end connection and sealing process. Three kinds of production technology features are described below:

        1. Single bond patterned umbrella suit jacket BAUER plus vertical Glue: mandrel outer jacket molded after passing through internal RTV silicone rubber adhesive good umbrella series, which poured into the polymer filling the vacuum gap plastic, the ends of the connection fittings seal to complete the production. This kind of technology is early in the process, process more large dispersion, it is difficult to ensure production of plastic irrigation technology 220KV and above voltage level of fullness. Since the mandrel Deflection, small plastic irrigation slit, the mandrel and the inner wall of the contact-prone umbrella string side glue duct blockage, resulting in the formation of a local non-filled rubber insulation defects.

       2. extruded jacket plus stick umbrella disc: Mandrel the fight brush hair treatment after the binder, the sheath is made by squeezing the charter, the secondary vulcanization and vulcanized good umbrella piece wearing flash with umbrella machine room vulcanized silicone rubber adhesive, the end connection fittings, after the completion of the sealing process. The technology to produce high efficiency, due to domestic crowded charter outlet temperature is low, the mandrel and the jacket bonded mainly by secondary vulcanization were scattered disc with jacket bonded facets.

       3. segments or a single injection into a form: After a fight hair treatment mandrel brush binder, by injection molding in a mold for injection molding. High voltage insulator take sub injection molded, by the second curing, sealing fittings to complete the connection. This process is mandrel coupling in the jacket is hot, good bonding effect, only one interface, less insulating interface, it is a relatively new production technologies.