Enamelled wire is currently a very widely used wire i […]
Enamelled wire is currently a very widely used wire in motor and transformer equipment. There are many factors to judge the quality of enamelled wire. The most important one is to look at the continuity of the enamelled wire paint film, which is to detect the needle of the enamelled wire paint film under a certain length. Number of holes.
The number of pinholes on the paint film can reflect the quality of enamelled wire to a large extent. The fewer the number of pinholes detected, the higher the integrity of the paint film of the enamelled wire and the better the use effect. On the contrary, the quality of the enamelled wire is better. Will be greatly reduced. So how do we check the pinhole number of enamelled wire in practice?
Generally, we will use a professional paint film continuity tester to check the number of pinholes of the enamelled wire. This detection mainly uses the principle of high-pressure leakage, and passes the electromagnetic wire and the concave wheel with high pressure in the semi-envelope When contact is made, when the paint film thickness is insufficient or there are serious bare copper defects, the instrument will respond and record the specific number of defects. In this way, you can see the number of pinholes in this section of enamelled wire.
Therefore, when we purchase enamelled wire, we must also pay attention to checking the number of pinholes of the enamelled wire to help us judge the quality of the enamelled wire, which is also very useful for our use.