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What Determines The Wear Rate Of The Motorcycle Carbon Brush Commutator And Slip Ring

Oct 19, 2017


What determines the wear rate of the Motorcycle Carbon Brush commutator and slip ring! There is no breakage value for the wear factor of the commutator or slip ring in the technical characteristics table of the Motorcycle Carbon Brush. A series of causes of commutator wear can be cited: sparking under the brush, brush too hard, abrasive material in the Motorcycle Carbon Brush, low hardness of the commutator material, harmful chemical action in the surrounding atmosphere, current flow Contact points and so on.
The last three reasons for these reasons are not related to Motorcycle Carbon Brush. The method of sparks and their elimination will be discussed later. Very hard Motorcycle Carbon Brush is usually used in the peripheral speed is low, easy to dirty and black commutator; in this case, Motorcycle Carbon Brush does not cause commutator has a great wear rate, but There is a clearing effect on the dirt on the surface of the commutator. Some companies can use a high degree of peripheral speed that allows the commutator to clean the special abrasive motorcycle Carbon Brush (this work can not be done with a hard carbon graphite brush because it is suitable for very low peripheral speeds. In this type of Motorcycle Carbon Brush, the abrasive material penetrates into the motorcycle Carbon Brush material with very small particles, which makes the commutator's wear evenly and is small.
Motorcycle Carbon Brush is also called brush according to the brush production method, divided into two categories: one is colored brushes, namely metal graphite brush, the other is a black brush. Colored brushes, containing non-ferrous metals, mainly copper powder, silver powder, followed by lead powder, tin powder, lead oxide powder, the balance of the scale graphite powder. How much of the metal powder content depends on the technical requirements of the brush. Most of the brush material made of graphite, in order to increase the conductivity, there are made of copper-containing graphite, graphite has a good electrical conductivity, soft texture and wear.
Motorcycle Carbon Brush is a device for transferring energy or signals between a fixed part of a motor or generator or other rotating machine. It is usually made of pure carbon and coagulant. The exterior is usually a square, stuck on a metal bracket, There is a spring to press it on the shaft, the motor rotation, the power through the inverter delivery to the coil, because its main component is carbon, called Motorcycle Carbon Brush, it is easy to wear. Should be regularly replaced and cleaned up.
Motorcycle Carbon Brush is a DC motor or winding motor to the rotor conductive device, only through it can be sent to the rotor up, the role in the motor is to change the current direction of the DC motor and AC motor, DC motor is to change the rotor Of the conductive coil, thereby changing the rotor pole. Thereby changing the movement of the motor. Because Motorcycle Carbon Brush is relatively soft, and wear, smooth, not easy to play spark. Conductive performance Ye Hao, not easy to oxidation, deterioration, deformation. So it is generally used for conductive contact surface.
Motorcycle Carbon Brush run in three ways: natural running, manual running, tool running. Motorcycle Carbon Brush Friction surface and the rotating parts of the friction surface contact to complete, the current transmission will be uniform. If you do not run the work, the motor will run when there are sparks. The way to run is as follows:
Natural running: After the Motorcycle Carbon Brush is installed, start the motor running in the no-load case, so that it naturally runs (about 0.5-3 hours, depending on the size of the situation).
The new Motorcycle Carbon Brush must be properly ground (ground) to ensure that the Motorcycle Carbon Brush is in contact with the slip ring surface. The Motorcycle Carbon Brush is designed to be able to move freely up and down. If there is a jam, Motorcycle Carbon Brush should be sandwiched by sandpaper to keep the Motorcycle Carbon Brush from the inside of the brush grip between 0.1-0.3 mm to prevent the Motorcycle Carbon Brush from catching in the brush or excessive swing. Brush the lower edge of the distance from the slip ring surface should be maintained at about 3mm ~ 4mm mm.