What are the applications of magnet wire?

Magnetic wire is an insulated wire that generates a magnetic field or induces current in a magnetic field after being energized. It is mainly used for motor and transformer windings and other related electromagnetic equipment. Its conductors are mainly copper wire and aluminum wire, with a thin insulation layer and good electrical and mechanical properties, heat resistance, moisture resistance, solvent resistance and other properties. Different properties can be obtained by choosing different insulating materials. Magnetic wire mainly includes enameled wire and wrapped wire.

Function of magnetic wire in circuit

✅ 1. Conversion of electric energy and magnetic energy

✅ 2. Insulation protection

✅ 3. Signal transmission

✅ 4. Special physical properties

What are the applications of magnetic wire?

• 1. Power and energy field

Electromagnetic wire plays a key role in the power and energy field. It is widely used in the manufacture of power equipment such as AC motors, transformers, generators, etc. to realize the conversion between electric energy and magnetic energy. In the field of new energy, such as wind power generation and solar power generation, electromagnetic wire also plays an indispensable role.

• 2. Home appliances and electronic products field

In the field of home appliances and electronic products, electromagnetic wire is also widely used. For example, a large number of electromagnetic wires are used in household appliances such as air conditioners, refrigerators, washing machines, and electronic products such as mobile phones and computers. They are used to manufacture key components such as motors and coils to ensure the normal operation of the equipment.

• 3. Automobile and transportation fields

With the rapid development of new energy vehicles, the application of electromagnetic wires in the automotive and transportation fields is becoming more and more extensive. Key components such as motors and battery management systems in new energy vehicles cannot do without the support of electromagnetic wires. In addition, in the field of rail transportation, electromagnetic wires are also used to manufacture traction motors, signal transmission and other equipment.

• 4. Communication and information fields

In the field of communication and information, electromagnetic wires also play an important role. It is widely used to manufacture coils, inductors and other components of communication equipment to achieve information transmission and processing. At the same time, in electronic information products, electromagnetic wires are also used to manufacture various electronic components, such as inductors, transformers, etc.

• 5. Aerospace and defense fields

In the field of aerospace and defense, the application of electromagnetic wires is also indispensable. It is used to manufacture key components of aerospace vehicles such as satellites, rockets, and aircraft, such as engines, navigation systems, etc. At the same time, in the field of defense, electromagnetic wires are also used to manufacture various military equipment and weapon systems.

Production process of magnetic wire

• 1. Material preparation

The raw materials of the electromagnetic wire are transported to the production site by carts. The preparation of insulating paint is completed in the paint configuration room. According to the different insulation levels of various electromagnetic wires, a certain proportion of paint and thinner are fully mixed and evenly added to the enameling machine.

• 2. Wire drawing

Wire drawing is carried out in the wire drawing machine, and is drawn once or multiple times according to the required wire diameter. The temperature during drawing can generally reach 60~100℃, and water-soluble lubricants are used for lubrication and cooling. When the temperature exceeds 100℃, supplementary cooling and heat removal are carried out.

• 3. Water washing

Water washing is to use water purified by hydrochloric acid and caustic soda to wash the electromagnetic wire with high-pressure water flow to remove oil stains on its surface.

• 4. Annealing

Annealing is generally carried out in an annealing furnace by electric heating. The annealing temperature is generally controlled at 300~600℃. During annealing, water vapor is used for protection to prevent oxidation. After annealing, a hair dryer is used for air cooling, and it enters the impregnation section at about 40℃.

• 5. Impregnation

The impregnation process is carried out in the enameling machine and is completed multiple times according to the requirements of the insulation layer. During the impregnation, a proper 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 drying of the electromagnetic wire is carried out in a drying furnace. The drying temperature is determined according to the speed of wire drawing, generally 300~400℃. The maximum temperature can reach 670 degrees Celsius. Drying and exhaust gas removal are carried out simultaneously. The exhaust gas (temperature is 300~400 degrees Celsius) contains toxic and flammable vapors such as cresol, phenol, and xylene. After the catalytic reaction reaches the environmental protection index, it is discharged into the atmosphere by the exhaust fan.

• 7. Reeling

Reeling is to use the reeling device to wind the dried electromagnetic wire product on the reel. A small amount of lubricant (974 gasoline, cyclohexane) needs to be added when reeling.

• 8. Packaging and storage

After passing the inspection, the wound wire reels are wrapped with plastic film and placed in cartons or paper tubes. They are packaged into wire drags according to user needs and loaded and unloaded into a dedicated warehouse.

Original Source:Magnet Wires for Power Industry