Insulated aluminium magnet wire can be classified according to its basic composition, conductive wire core and electrical insulation layer. Generally, according to the insulation materials and manufacturing methods used in the electrical insulation layer, it can be divided into enameled wire, wrapped wire, enameled wrapped wire and inorganic insulating wire.

The conductor is coated with a corresponding paint solution and then made by solvent evaporation, film solidification and cooling. The insulated enamelled aluminium magnet wire can be divided into polyester enameled wires, polyesterimide enameled wires, polyamide enameled wires, polyimide enameled wires, polyesterimide/polyamide enameled wires, corona-resistant enameled wires, paint, acetal enameled wires, polyurethane enameled wires and so on. Sometimes it is also classified according to the particularity of its use, such as self-adhesive enameled wire, refrigerant-resistant enameled wire, etc.


 
The earliest  insulated enamelled aluminium magnet wire was oil enameled wire, made of Tung oil, etc. The paint film has poor wear resistance and can not be directly used to manufacture motor coils and windings. Cotton yarn wrapping layer is needed in use. Later, the polyvinyl formaldehyde enameled wire came out, and its mechanical properties were greatly improved. It can be directly used in motor windings, which is called high strength enameled wire.
With the development of weak current technology, self-adhesive enameled wires have emerged, which can obtain better coils without impregnation and baking. But its mechanical strength is poor, so it can only be used in micro and special motors and small motors. In addition, in order to avoid the trouble of removing the paint film first, a direct weldable enameled wire was developed. The coating film can fall off in the high temperature enamel tank and make the copper wire easy to weld.
 
As the application of enameled wires is becoming more and more extensive and the requirements are becoming stricter, composite insulated aluminium magnet wire have also been developed. The inner and outer coatings are made up of different macromolecule materials, such as polyesterimide/polyamide imide enameled wires.

An important variety of winding wires. Early cotton yarn and silk, called yarn wrapped yarn and silk wrapped yarn, have been used in motor and electrical appliances. Most of them have been replaced by enameled wires because of their large insulation thickness and low heat resistance. At present, it is only used as high frequency winding wire. In large and medium size winding wires, when the heat resistance level is high and the mechanical strength is high, the glass filament wrapped wire is also used, and the appropriate adhesive paint is used in the manufacture.




Paper wrapped wire still occupies a considerable position in wrapped wire, mainly used in oil-immersed transformer. The oil-paper insulation formed at this time has excellent dielectric properties, low price and long service life. Paper wrapped insulated aluminium magnet wire is a wire which is annealed after extrusion or drawing of oxygen-free copper rod or electric round aluminium rod by a certain size die, and then wrapped two or more layers of insulating paper (including telephone paper, cable paper, high voltage cable paper, inter-turn insulating paper) on copper (aluminium) conductor. It is suitable for oil-immersed transformer coils and other similar electrical windings. NOMEX paper-wrapped insulated aluminium magnet wire is a kind of winding wire made of oxygen-free copper rod or electric circular aluminium rod extruded by a certain size die, and then wrapped by NOMEX insulating paper produced by DuPont Company, USA. It is mainly used for winding of transformers, welding machines, electromagnets or other similar electrical equipment products. The bare copper (aluminium) conductor produced by extrusion process is the most ideal material for cable paper wrapped wire production.
In recent years, film wrapping insulated aluminium magnet wires have developed rapidly, mainly polyester film and polyimide film wrapping wires.
Recently, mica tape wrapped polyesterimide film has been used to wrap copper flat wire for wind power generation.
Henan Signi Aluminum specializes in the production of enamelled insulated aluminium magnet wire, glass-wrapped insulated aluminium magnet wire, polyimide film-wrapped insulated aluminium magnet wire, etc., exported to Japan, Italy, Mexico, Vietnam and other countries, the quality of which is excellent and widely praised by customers.