The enameled wire is also subjected to inspection after […]
The enameled wire is also subjected to inspection after it is finished. The following are the aspects of the enameled wire need to be inspected.
1. Adhesion: Whether the paint film is cracked when it is rapidly stretched.
2. Pinhole: A small hole in the film that cannot be discerned by visual inspection of the material at a certain length.
3. Abrasion resistance (damage): When the paint film is worn by the abrasion tester, the number of times the conductor is seen or the wear damage value is ground.
4. Flexibility (flexibility): Whether the paint film is cracked or pinholes are generated when winding or stretching.
5. Thermal shock resistance: When it is stretched or wound, it is heated under the specified conditions to see if the paint film is cracked.
6. Straight solderability: According to the specified conditions, solder, solder, whether the solder is evenly attached.
7. Insulation breakdown voltage: The two enameled wires are twisted into one piece, and a voltage is applied between the conductors to break the voltage of the paint film.
8. Aging resistance: When heating under specified conditions, it is expressed by whether the paint film produces pinhole or insulation breakdown voltage.
9. Softening resistance: The cross-linked enameled wire is heated under the specified conditions, and after being energized, the temperature value is short-circuited or short-circuited. Or twist the two enameled wires to heat under the specified conditions, depending on whether the paint film is abnormal.
10. Conductor resistance: measured by a conductor resistance tester and replaced by a value at 20 °C.
11. Solvent resistance or chemical resistance: When immersed in a solvent or a drug, the state of the paint film is expressed by a nail method or a pencil method.
12. Oil resistance: Dip in insulating oil under specified conditions, and the state of the paint film is expressed by nail or pencil.