ã€China Aluminum Industry Network】 Aluminum core electromagnetic wire, as its name suggests, refers to the electromagnetic wire with aluminum as the core, and magnet wire is used to manufacture insulated wires for coils or windings in electrical products. Also known as winding wire. Magnet wire must meet a variety of use and manufacturing process requirements. The former includes its shape, size, ability to work at high temperatures for a short time and for a long period of time, as well as strong vibrations and high-speed centrifugal forces under certain conditions, resistance to corona and breakdown at high voltages, and chemical resistance in special atmospheres. Corrosion, etc.; the latter includes the requirements for tensile, bending, and abrasion experienced during winding and inserting, as well as swelling and erosion during impregnation and drying. Indoor Light,Indoor Wall Lamp,Modern Style Indoor Wall Lamps,Led Down Light Indoor Shenzhen You&My Electronic Technology Co., Ltd , https://www.szyoumylighting.com
Aluminum core magnet wire can be classified according to its basic composition, conductive core and electrical insulation layer. According to the insulating material used in the electrical insulating layer and the manufacturing method, the aluminum core enameled wire, the aluminum core wrap-around wire, the aluminum core enameled wrap-around wire, and the inorganic insulated wire are generally divided into the aluminum core enameled wire.
Aluminum core wire magnet wire: coated with a corresponding paint solution outside the conductor, and then solvent evaporation and film curing, cooling and made. The enameled wire can be divided into polyester enameled wire, polyesterimide enameled wire, polyamideimide enameled wire, polyimide enameled wire, polyesterimide/polyamideimide enameled wire, corona resistant enameled wire, and oil-based insulation paint. Paint, acetal paint, polyurethane enameled wire and so on. Sometimes classified according to the specificity of their use, such as self-adhesive enameled wire, anti-refrigerant enameled wire and so on.
The earlier magnet wire enameled wire was an oil-based enameled wire made of tung oil. The paint film has poor wear resistance and cannot be directly used for manufacturing motor coils and windings. When used, it needs to be wrapped with cotton yarn. Later, the advent of polyvinyl formalin enameled wire, its mechanical properties greatly improved, can be directly used for motor windings, and called high strength enameled wire.
With the development of weak current technology, a self-adhesive enameled wire has emerged, so that a good overall coil can be obtained without impregnation and baking. However, its mechanical strength is poor and can only be used in micro-motors and small motors. In addition, in order to avoid the trouble of removing the paint film first during welding, a straight solder enameled wire was developed, and the coating film was able to fall off in the high-temperature solder bath to make the copper wire easy to solder.
Wire wrapping around magnet wire: An important variety in winding wire. Early use of cotton yarn and silk, known as yarn wrapping and silk wrapping, was used in motors and electrical appliances. Due to the large insulation thickness and low heat resistance, most have been replaced by enameled wires. Currently only used as high frequency winding wire. In the winding wires of large and medium specifications, when the heat-resistant grade is high and the mechanical strength is large, a glass-wire coated wire is also used, and an appropriate adhesive paint is used in the manufacture.
In the wrapping line, the wrapping line still occupies a considerable position, mainly used in oil-immersed transformers. The oil-paper insulation formed at this time has excellent dielectric properties, and is inexpensive and has a long life. In recent years, the development of relatively fast is the film around the envelope, mainly polyester film and polyimide film around the envelope. Recently, a mica-coated polyesterimide film for wind power generation is wrapped around a copper flat wire.
Insulated wire of aluminum core magnet wire: When the heat-resistant grade exceeds the limit of organic material, it is usually coated with inorganic insulating paint. Existing inorganic insulated wires can be further classified into glass film wires, oxide film wires, and ceramic wires. There are combination wires, Chinese wire and cable network position wire and so on.
As the application of the enameled wire of the aluminum core magnet wire has become increasingly widespread, the requirements have become increasingly strict, and a composite enameled wire has also been developed. Its inner and outer paint films are composed of different polymer materials, such as polyesterimide/polyamideimide enameled wire. Therefore, the aluminum core electromagnetic wire is also increasingly used in various related industries, and the industrial position of the aluminum core wire has also been irreplaceable.