With the Carbon Brush manufacturers and different Carbon Brush models its composition and structure is not the same, then the Carbon Brush wear rate will not be the same. So we recommend that the majority of customers try to choose the same kind of Carbon Brush, because it can reduce the product model caused by the Carbon Brush is not balanced self-wear rate.
Four factors that affect the Carbon Brush wear:
1. Determine the quality of Carbon Brush quality is a very important basis is the Carbon Brush wear rate. The smoothness of the slip ring surface will cause some wear on the Carbon Brush: if the smoothness of the slip ring surface is relatively high, the friction coefficient of the Carbon Brush can be reduced because the coefficient of friction produced by it is relatively small.
2. Carbon Brush material can also affect the Carbon Brush wear.
3. The pressure of the compression spring will also affect the degree of wear of the Carbon Brush: the pressure of the compression spring must be adjusted moderate, because if the pressure spring pressure is too large, it will increase the Carbon Brush mechanical wear
4. The current will also affect the wear of the Carbon Brush. Under normal circumstances, the graphite Carbon Brush in the positive Carbon Brush current flow than the negative Carbon Brush current flow is relatively large, casually will cause the positive Carbon Brush wear degree than the negative Carbon Brush wear a little more.
New Carbon Brush before use need to do the work of four points:
1, the new Carbon Brush must be used before the grinding (grinding), to ensure that the Carbon Brush and slip ring surface contact up to 80%, Carbon Brush into the brush to ensure that the upper and lower free to move, if the card astringent phenomenon should be Will be four sides of the Carbon Brush with sandpaper to keep the Carbon Brush and brush the gap between the wall should be between 0.1-0.3 mm, so as not to brush the card in the brush or because of the gap is too large to produce swing. Brush the lower edge of the distance from the slip ring surface should be maintained at about 3mm ~ 4mm mm.
2, at the same time, each brush holder only for 1 to 2 Carbon Brush, and the old and new Carbon Brush models must be consistent.
3, regularly with a DC clamp meter to measure the current sharing of the Carbon Brush evenly.
4, with a spring scale to check the pressure of the Carbon Brush should be uniform and stable, the unit pressure is usually between 1.1kg ~ 2.5kg, the Carbon Brush between the uneven pressure difference of less than 5%.
Carbon Brushes can shorten the manufacturing cycle and significantly reduce production costs. Due to the need for any special equipment, especially for the field processing large carbon steel elbow. The blank is flat or can be curved surface, so the material is simple, easy to guarantee, easy assembly and welding.
Carbon Brush for welding when the note:
1, in order to prevent the Carbon Brush because of heating and produce eye erosion, welding current should not be too much, less than about 20% of carbon steel electrode, arc should not be too long, cold between layers, narrow bead is appropriate.
2, Carbon Brush after the hardening of a larger, easy to produce cracks. If the same type of Carbon Brush welding, must be more than 300 ℃ preheating and 700 ℃ after the slow cooling treatment. If the weldment can not be heat treated after welding. You should use Carbon Brush electrode.
Carbon Brush has a certain corrosion resistance (oxidizing acid, organic acid, cavitation), heat and wear resistance. Usually applicable to the oil, natural gas, chemical, hydropower, construction and boiler industries such as pipeline system.