Ningbo Jintian Copper (Group) Co., Ltd.
Ningbo Jintian Copper (Group) Co., Ltd.

The Performance, Use and Production Process of Enamel Coil Wire

Ⅰ. The concept of enamel coil wire

The enamel coil wire is coated with one or several insulating coatings on the surface of the conductor, which is baked and cooled to form a wire with an insulating layer.

Enamel coil wire is a variety of magnet wire (winding wire), which is a wire used for electromagnetic induction. In physics, it is pointed out that a magnetic field will be generated around a current-carrying conductor, and a moving conductor will generate a current when the magnetic field lines are cut in the magnetic field, which is the phenomenon of electromagnetic induction.

Therefore, the ultimate purpose of enamel coil wire is to realize the mutual conversion between electric energy, magnetic energy and kinetic energy.

Ⅱ. The performance and use of enamel coil wire

Enamel coil wires are widely used in industrial production, household appliances and other industries. The main properties and uses of various enamel coil wires are as follows:

1. UEW: direct welding; used for various machines, communication equipment, instruments, relays, small transformers, etc.;

2. UEWE: enamel coated copper wire has direct weldability and excellent winding linearity; it is used for small motors, deflection coils, etc.;

3. PVF: resistant to water-containing transformer oil, excellent resistance to humidity and heat; oil pressure transformers, underwater motors, closed motors, etc.;

4. PEW: used for various motors, transformers, etc.;

5. PEWN: excellent winding linearity and excellent resistance to water; used for various motors, transformers, etc.;

6. EIW: Excellent resistance to humidity and heat; used for machines, motors, high-voltage transformers, etc. with special requirements for heat resistance;

7. EIWH: excellent in winding, heat resistance, humidity and heat resistance; used for special motors, high-voltage transformers, power tools, etc.;

8. AIW: excellent heat resistance and chemical resistance; used for special motors, aircraft accessories, power tools, etc.;

9. FBWHC: Self-adhesive; used for deflection coils, high-voltage transformers, etc.

Ⅲ. The production process of enamel coil wire

Paying off (joint drawing)→annealing→painting→baking→cooling→lubricating→winding

1. Paying off: The copper material is uniformly discharged from the iron shaft to provide raw materials and ensure the stability of the paint. In the high-speed machine, the combined wire drawing machine is used to pay off the wire.

2. Annealing: soften the bare copper wire, such as tinned annealed copper wire, remove the internal stress during the stretching process, rearrange the molecular lattice, and enhance flexibility and conductivity.

3. Painting: Apply insulating paint evenly to bare copper wires, using mold or felt as a medium.

4. Baking: Evaporate the solvent in the paint liquid to solidify the paint base material to form a paint film with a solid body structure.

5. Cooling: The paint film is cooled and further formed to prepare for the second painting.

6. Lubrication: For the enamel insulated wire after painting, apply a layer of lubricant on the surface to reduce the friction during processing.

7. Take-up: The finished products are coiled and evenly arranged with a plastic shaft, which is convenient for customers to process and use.