From：Zhaoqing second machine tool works Co., Ltd. Release time：2019-08-27
Overview：When the polishing machine is polished, the sample grinding surface and the polishing disc should be absolutely parallel and evenly pressed on the polishing disc, taking care to prevent the sample from flying out and creating new wear marks due to too much pressure.
What are the details when polishing the polishing machine?
When the polishing machine is polished, the sample grinding surface and the polishing disc should be absolutely parallel and evenly pressed on the polishing disc, taking care to prevent the sample from flying out and creating 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 polished fabric too fast. During the polishing process, the fine powder suspension should be continuously added to keep the polishing fabric at a certain humidity. Too much humidity will weaken the wear scar, so that the hard phase in the sample will appear embossed and the non-metallic inclusions in the steel and the graphite phase in the cast iron will produce a "tailing" phenomenon; if the humidity is too small, the sample will be generated due to frictional heat generation. The temperature rises, the lubrication is reduced, the surface is tarnished, and even dark spots appear, and the light alloy will throw the surface. In order to achieve the purpose of rough throwing, the rotation speed of the turntable is required to be low, preferably not exceeding 500r/min; the polishing time should be longer than the time required to remove the scratch, because the deformed layer is also removed. After rough polishing, the surface is smooth, but it is dull and dull. Under the microscope, there is a uniform and fine wear scar, which needs to be removed by fine polishing. The speed of the turntable can be appropriately increased during fine polishing, and the polishing time is preferably to throw away the damage layer of the rough throw. After fine polishing, the polished surface is as bright as a mirror. No scratches can be seen under the bright field conditions of the microscope, but the wear marks are still visible under phase contrast lighting conditions. The polishing quality of the polishing machine seriously affects the structure of the sample, which has gradually attracted the attention of relevant experts. In recent years, a lot of research work has been done on the performance of polishing machines at home and abroad. Many new models and a new generation of polishing equipment have been developed, which are being developed from the original manual operation into various semi-automatic and fully automatic polishing. machine.
The performance and features of several commonly used mechanical polishing machines are described below. The polishing machine is specially designed for the surface treatment and treatment of steel, aluminum and copper metal products. Dozens of original accessories meet different needs, and it is easy to manufacture snow patterns, drawing patterns, wave patterns and matte with various precisions. Surface, mirror, etc., quick repair of deep scratches and slight scratches, rapid grinding and polishing; welds, nozzle marks, oxide film, stains and paints, suitable for deburring, rounding, decorative metal processing, It does not form shadows, transition zones and uneven decorative surfaces during processing, and is an important equipment for metal product production lines.