For most motor products, cast iron, ordinary steel parts, and copper parts are relatively common applications. However, some motor parts may be selectively used due to factors such as different motor application locations and cost control. The material of the component is adjusted.
In the initial design plan, the collector ring material was mostly copper, and its better electrical conductivity was the main tendency to choose this material; but in the actual application process, especially the matching brush system , directly affects the overall operating effect; when the material of the carbon brush is hard or the pressure of the brush box is too high, it will directly cause serious wear of the conductive ring, making the motor unable to operate normally. Frequent replacement will reduce both operating efficiency and cost. unreasonable.
In response to this actual situation, many motor manufacturers choose steel collector rings, which better solves the wear problem of the system. However, it is followed by the corrosion problem of the collector rings, although some are used in the manufacturing process of the motor. Anti-rust measures, but the harsh conditions of the operating environment and possible uncertainties may still cause serious corrosion problems. Especially for occasions where maintenance is inconvenient, stainless steel is required for collector rings when the current density is satisfied. Conductive ring material, thus avoiding the problems of rust and wear at the same time, but this type of collector ring is difficult to process and the cost is relatively high.
Compared with ordinary bearings, stainless steel bearings have better corrosion resistance and are not easy to rust; during the cleaning process, they can be washed with water and can run in liquids; due to the good corrosion resistance of the bearings, stainless steel bearings can always be used Keep it in a cleaner state.
Because stainless steel bearings are equipped with high-temperature polymer cages, they have better heat resistance and slower quality degradation. Some stainless steel bearings do not require lubrication at low speeds and light loads. However, stainless steel bearings have disadvantages such as high cost, poor alkali resistance, relatively easy fracture and failure, and rapid deterioration under abnormal lubrication, which have also led to limitations in the application fields of this type of bearings. Currently, stainless steel bearings are widely used in fields such as medical equipment, cryogenic engineering, optical instruments, high-speed machine tools, high-speed motors, printing machinery and food processing machinery.
Post time: Aug-31-2023