The polishing machine is a common electric processing tool, which is mainly composed of chassis, polishing plate, polishing fabric, polishing cover and polishing cover. When it is working, it is mainly driven by the electric motor, which causes the polishing plate to continuously rotate and polish the polishing items. Apply the appropriate pressure to finish the polishing. However, the polishing machine is prone to problems in long-term use, reducing the service life of the polishing machine, so how to extend the use time of the polishing agent? We have to know how the polishing machine works and how to maintain it. Please see the following point:
1. The key to the operation of the polishing machine is to try to get the maximum polishing rate, so as to remove the damaged layer caused by polishing as soon as possible. At the same time, it is necessary to prevent the polishing damage layer from affecting the finally observed tissue, that is, from causing false tissue. The former requires the use of coarser abrasives to ensure a greater polishing rate to remove the polished damage layer, but the polishing damage layer is also deeper; the latter requires the use of the finest materials to make the polishing damage layer shallower, but polished The rate is low.
2. The best way to resolve this contradiction is to divide the polishing into two stages. The purpose of rough polishing is to remove the polishing damage layer. This stage should have the maximum polishing rate. The surface damage caused by rough polishing is a secondary consideration, but it should also be as small as possible; followed by fine polishing (or final polishing), The purpose is to remove the surface damage caused by rough polishing and minimize polishing damage.
3. When the polishing machine is polishing, the grinding surface of the sample and the polishing disc should be absolutely parallel and lightly pressed on the polishing disc evenly, taking care to prevent the sample from flying out and generating new wear marks due to too much pressure. At the same time, the sample should be rotated and moved back and forth along the radius of the turntable to avoid local wear of the polishing fabric too fast. During the polishing process, the powder suspension must be continuously added to keep the polishing fabric at a certain humidity.