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How To Identify The Washing Machine Carbon Brushes Is Good Or Bad?

Jun 14, 2017

How to identify the Washing Machine Carbon Brushes is good or bad?

It is always good to run without fire.

Current below the rated value, the spring pressure is normal, slip ring (or commutator) smooth, the Washing Machine Carbon Brushes contact surface smooth, uniform wear, certainly not flames.

Multiple judgments:

Washing Machine Carbon Brushes, also known as the choice of brush on the motor to suppress the spark has an important role, should be power, voltage, load characteristics and commutator circumference speed and other conditions selected. Commonly used electrochemical graphite brush, because of its high resistance coefficient and contact voltage, to inhibit the spark favorable. However, for low-voltage motors, the large contact voltage makes it a large proportion of the total voltage drop, so the use of metal graphite brush.

 

From the use of view, the use of good performance of the brush signs are the following:

one look

1, see hardness 2, see color 3, to see if there are impurities 4, look at the packaging

Dual use

1, whether the start is weak.

2, days cool or battery slightly loss of power in the case can not start.

3, when the electromagnetic switch when the stop (that is, driving the gear is not sensitive).

Three wear:

Determine the quality of the Washing Machine Carbon Brushes quality is a very important basis is the Washing Machine Carbon Brushes wear rate. Washing Machine Carbon Brushes wear rate is smaller, the longer the service life. The same because the Washing Machine Carbon Brushes wear rate at a relatively small time, the relevant equipment operation and maintenance personnel will be relatively small workload, operating costs are very low.

1, the smooth surface of the slip ring will cause a certain degree of wear on the Washing Machine Carbon Brushes: If the smooth surface of the slip ring is relatively high, because the friction coefficient will be relatively small, then the Washing Machine Carbon Brushes wear rate can Reduced. In addition we all know that in the slip ring surface has a layer of oxide film, the main role is to reduce the slip ring and the Washing Machine Carbon Brushes between the friction coefficient, so as to reduce the degree of wear of the Washing Machine Carbon Brushes.

2, the pressure of the compression spring will also affect the degree of wear of the Washing Machine Carbon Brushes: the pressure of the compression spring must be adjusted moderate, because if the pressure spring pressure is too large, it will increase the Washing Machine Carbon Brushes mechanical wear; Small, although the washing machine between the carbon brush and slip ring friction between the smaller, but likely to cause poor contact with the spark.

3, the current will also affect the Washing Machine Carbon Brushes wear. Under normal circumstances, graphite Washing Machine Carbon Brushes in the positive Washing Machine Carbon Brushes flow current than the negative Washing Machine Carbon Brushes current flow to be relatively large, casually will cause the positive Washing Machine Carbon Brushes wear degree than the negative Washing Machine Carbon Brushes Wear a little bigger. And the wear of the positive slip ring is also more than the negative slip ring, then each time the unit overhaul, we can adjust the Washing Machine Carbon Brushes positive and negative cable head to delay the purpose of wear and tear.

4, Washing Machine Carbon Brushes material can also affect the Washing Machine Carbon Brushes wear. Different Washing Machine Carbon Brushes production business and different Washing Machine Carbon Brushes models its composition and structure is not the same, then the Washing Machine Carbon Brushes wear rate will not be the same. So we recommend that the majority of customers try to choose the same kind of Washing Machine Carbon Brushes, because it can reduce the product model caused by the Washing Machine Carbon Brushes uneven self-wear rate.

Four models:

The correct choice of brush model is very important, because the manufacture of brushes used in the selection of raw materials and processes are different, its technical performance is also different. Therefore, when selecting the brush, you should consider the performance of brush and motor brush requirements. Brush use performance good signs should be:

1, in the commutator or collector ring surface can quickly form a layer of uniform, moderate and stable oxide film.

2, brush the long life, not wear commutator or collector ring.

3, brush has a good commutation and current collection performance, so that the spark within the allowable range, and the energy loss is small.

4, brush running, but hot, low noise, reliable assembly, no damage.