What Is Magnet Wire?

Magnet wire, also known as winding wire, is an insulated wire used to make coils or windings in electrical products. Electromagnetic wire is usually divided into enameled wire, wound wire, enameled wire and inorganic insulated wire.

Magnet wire is used in the manufacture of electrical products

The use of electromagnetic wires can be divided into two types:

General purpose, mainly used in motors, electrical appliances, meters, transformers, etc., to generate electromagnetic effects by winding coils, and use the principle of electromagnetic induction to achieve the purpose of electrical and magnetic energy conversion;

Special purpose, used in fields with special characteristics such as electronic components and new energy vehicles. For example, fine electronic wires are mainly used for information transmission in the electronics and information industries. New energy automobile special wires are mainly used in the production of new energy vehicles. Manufacturing. ^[1]

1, preparation

The raw materials of the electromagnetic wires are delivered to the production site by a cart. Preparation of insulation paint is done in the paint configuration room. According to the degree of insulation of various electromagnetic wires,

Electromagnetic wire

A certain proportion of paint and thinner are thoroughly mixed and added to the enameling machine.

2.Drawing

The wire drawing is performed in a wire drawing machine, and is drawn in one or more times according to the required wire diameter. The temperature during drawing can generally reach 60 to 100 ° C. Water-soluble lubricants are used for lubrication and cooling. When the temperature exceeds 100 ° C, supplementary cooling and heat removal are performed.

3.washing

Water washing is water purified by hydrochloric acid and caustic soda, and the electromagnetic wire is washed with a high-pressure water stream to remove the oil on its surface.

4. Annealing

Annealing is generally performed in an annealing furnace by means of electrical heating. The annealing temperature is generally controlled between 300 and 600 ° C. Water vapor is used to protect it from annealing during oxidation. After annealing, it is air-cooled with a blower and enters the dipping stage to about 40 ° C.

5.Immersion

The impregnation section is carried out in an enameling machine and is completed several times according to the requirements of the insulation layer. When dipping, an appropriate proportion of diluent is added according to the needs of the coating. The diluent contains flammable and toxic liquids such as cresol and xylene.

6.Drying

The electromagnetic wire is dried in a drying furnace. The drying temperature is determined by the drawing speed, which is generally 300-400 ° C. It can reach 670 degrees Celsius. Drying and exhaust gas are carried out simultaneously. The exhaust gas (temperature: 300-400 degrees Celsius) contains toxic and flammable vapors such as cresol, phenol, xylene, etc. After the catalytic reaction reaches the environmental protection index, the exhaust fan is discharged into the atmosphere.

7.Close the line

Take-up is to use a take-up device to wind the finished electromagnetic wire product on a spool. Need to add a small amount of lubricant (974 gasoline, cyclohexane) when winding up.

8.Packing and storage

After passing the inspection, the wrapped wire reel is wrapped in plastic film into a cardboard box or paper tube, packed into a line tug according to the needs of the user, and loaded and unloaded into a special warehouse. ^[2]