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Composite insulators manufacturing process

Composite insulators manufacturing process is simpler than porcelain insulator production process, including rod process, silicone rubber insulation manufacturing process.

Composite insulators manufacturing process        Composite insulators manufacturing process

The first manufacturing stage is the continuous pultrusion process yielding the FRP rod. The combination of a hydrolysis resistant epoxy resin with acid resistant glass fibers is a safe assurance against brittle fracture.
Rods are cut to length and visually inspected before being coated with a seamless sheath of high-temperature vulcanized silicone rubber ensuring optimum ascension prefabricated sheds are mounted on to the rod to complete the insulator.
A subsequent vulcanizing stage creates a durable high-strength bond between the sheds and the rod sheath. The metal hardware is mounted by a cold-forming process and all insulators are subjected to mechanical inspection, after which the joints between the FRP rod and the metal components are sealed with a special silicone elastomer.

The molding method is normally used for low or medium voltage insulators. The latest injection molding technology is used for vulcanization of the silicone shed to the high voltage insulators.

Composite insulators manufacturing process includes molding method and whole injection method.


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