| 摘要 |
PURPOSE:To manufacture a product which is electrically and mechanically excellent inexpensively by impregnating resin or varnish curable by ultraviolet ray to a molded strand coil and then emitting the ultraviolet ray and a microwave to cure the impregnated resin. CONSTITUTION:A cylindrical high voltage strand coil 1 is formed of an insulating base material such as polyester non-woven fabric, aramid paper or glass fiber and an insulated conductor such as a refractory enameled wire, a polyester non- woven cloth winding, aramid winding or a glass winding, and a wound core 7 is formed of iron, aluminum or plastic. A leakage preventing layer 12 is formed of polyester non-woven fabric or thermosetting resin felt at the end face of the coil 1. Then, epoxy resin 4 which contains 30wt% of component cured by ultraviolet ray added with photosensitizer to monomer is impregnated to the coil 1, ultraviolet ray 9 is emitted while rotating the coil 1 by a rotating unit 2 to cure the surface, the coil is further introduced into a microwave oven 13, and thermally cured by the microwave 14. In this manner, the coil can be inexpensively manufactured in good productivity in a short time. |
