The data of carbon brushes in the carbon brush holder of natural gas generating units are mostly made of graphite. In order to increase electrical conductivity, graphite brushes are also made of copper and graphite. Graphite has good conductivity, soft texture and wear resistance.
The carbon brush in the carbon brush holder of natural gas generator can be used for DC motor or commutator motor, such as general electric tool, hand drill and angle grinder. He is used to match the commutator to complete the commutation of the electric current.
The carbon brush in the carbon brush frame of the natural gas generator set is the sliding contact of the electric current of the motor parts (except the squirrel cage motor). In a DC motor, it is also responsible for the task of changing the alternating electromotive force of the armature winding and stopping the commutation (rectifying). The theory has proved that the reliability of the motor's operation depends on the performance of the brush on a large level.
We can divide into two types according to the consumption of carbon brush. One kind is colored carbon brush, that is, metal graphite brush. One type is black carbon brush. Colored brush, including non-ferrous metals, mainly copper, silver, lead, followed by tin powder, lead oxide powder, flake graphite powder for allowance. The content of all kinds of metal powder depends on the technical request of carbon brush.
When the metal content reaches above, the binder is not added, and the powder is mixed and then formed directly. Otherwise, join the binder (coal tar, coal tar or resin, etc.). Black carbon brushes are made from petroleum coke, pitch coke, carbon black, charcoal and natural graphite powder, etc., and take part in local binder, such as coal tar pitch, coal tar and artificial resin, etc.
High resistance carbon brush is the resin binder by curing brush manufacturing, and the calcined products called carbon brush and graphite brush (natural graphite as the main raw material) graphitised after product called electrographite brush.
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