A Enameled wire is an insulated wire used to make coils or windings in electrical products. Also known as the winding wire. The enameled wire must meet the requirements of various uses and manufacturing processes. The former includes its shape, specifications, ability to work at high temperatures for short and long periods of time, and withstands strong vibrations in certain occasions and centrifugal forces at high speeds, withstands corona and breakdown at high voltages, and with chemical resistance under special atmospheres. Corrosion, etc.; the latter includes the requirements of being subjected to stretching, bending and abrasion during winding and weaving, as well as swelling and erosion during dipping and drying.

Electromagnetic wires can be classified according to their basic composition, conductive core and electrical insulation. Generally, it is divided into an enameled wire, a wrapped wire, an enamel wrapped wire, and an inorganic insulated wire according to the insulating material and the manufacturing method used for the electrical insulating layer.

An important item in the winding line of the wrapped wire. Early use of cotton yarn and silk, called yarn wrapped wire and wire wrapped wire, was used in electric motors and electric machines. Because of the insulation is thick and the heat resistance is low, and most of them have been replaced by lacquered wires. It is currently only used as a high frequency winding line. In the winding line of large and medium gauges, when heat resistance when the grade is high and the mechanical strength is large, the glass wire is also used, and the appropriate adhesive paint is used in the manufacture.

The paper wrap line still occupies a relatively good position in the wrap line and is mainly used in the oil immersed transformer. The oil paper formed at this time has superior dielectric properties and the price is low and the life is long. In recent years, the thinner film wrapping wire has been developed more rapidly, mainly including a polyester film and a polyimide film wrapping wire.

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