The quality of carbon brushes and electric brushes has an impact on the operation. A simple damaged carbon brush can cause great trouble during operation. How to distinguish the quality of carbon brushes and electric brushes.
Carbon brushes are commonly seen vulnerable parts, and their quality depends primarily on:
Smooth finish (with a shiny appearance)
Texture (the texture should be smooth, delicate, and free of impurities)
Conductivity (the smaller the internal resistance, the better)
It's always good not to ignite during operation. When the current is below the rated value, the tension spring pressure is normal, and the slip ring (or commutator) is smooth, the contact surface of the carbon brush is lubricated flat and worn evenly, and it will definitely not ignite.
The production methods of various carbon brushes and electric brushes are divided into two categories
One type is colored carbon brushes, namely metal graphite carbon brushes.
One type is black carbon brush.
Carbon brush, the symbol of outstanding carbon brush application function, mainly includes the following situations:
1. When the electric brush is running, it does not overheat, has low noise, is not damaged, and the bristles do not change color or burn.
2. During operation, a uniform, moderate, and stable oxide film can be quickly formed on the surface of the commutator or collector ring.
3. Long service life and no wear on the commutator or collector ring, without causing scratches, unevenness, erosion, wire drawing, etc. on the commutator.
4. It has outstanding commutation and current collection functions, which keep sparks within the acceptable range and reduce energy loss.
