Several common bearing polishing method

The current commonly used polishing method has the following kinds: 1. 1 mechanical cutting, polishing machine polishing is to rely on material surface plastic deformation after removed by polishing the convex part of the smooth surface polishing method, commonly used article oil stone, wool wheel, abrasive paper, etc. , with manual operation is given priority to, special components such as surface of solid of revolution, can use tools such as turntable, high surface quality can be used over lapping method. Super throw is to use special abrasive lapping, in containing abrasive and polishing liquid, press on the processed workpiece surface, high-speed rotary motion. Using this technique can achieve Ra0. 008 microns of surface roughness, is among the highest in all kinds of polishing method. Optical lens mold often use this method. 1. 2 chemical polishing chemical polishing is to get the materials in the chemical medium surface micro protruding part of the concave part of the preferential dissolution, so as to get smooth surface. The main advantage of this method is no need to complicated equipment, can be polished shape complex artifacts, polishing of many artifacts, high efficiency. The core issue of chemical polishing is the configuration of the polishing liquid. Chemical polishing the surface roughness of the general number 10 microns. 1. Three basic principle of electrolytic polishing electrolytic polishing with the same chemical polishing, namely tiny bulge by selectively dissolved material surface, the surface is smooth. Compared with the chemical polishing, can eliminate the influence of the cathode reaction, the effect is better. Electrochemical polishing process is divided into two steps: ( 1) Macro leveling lysate to spread in the electrolyte, rough surface geometry, Ra mu m> 1. （ 2) Anode polarization light level off, the surface brightness, Ra < 1 microns. 1. 4 ultrasonic polishing workpiece to be included in the abrasive suspension and put in ultrasonic field, rely on the ultrasonic oscillation effect, make the abrasive surface grinding and polishing. Ultrasonic machining of macro force is small, can not cause deformation of workpiece, but tooling production and installation more difficult. Ultrasonic machining can be combined with chemical or electrochemical method. On the basis of corrosion, electrolytic solution, and then applying ultrasonic vibration mixing solution, make the surface lysate from, near the surface of the uniform corrosion or electrolyte; The ultrasonic cavitation in liquid can also inhibit the corrosion process, favors the normal lighting. 1. 5 polishing fluid polishing is rely on high speed of fluid flow of liquid and its carrying abrasive erosion surface polishing. Commonly used methods are: abrasive jet machining, liquid jet machining, grinding fluid power, etc. Grinding fluid power is driven by hydraulic pressure, make carry liquid medium to high speed reciprocating abrasive through the workpiece surface. Medium is mainly used in low pressure through the special compound with good sex ( Polymer material) And mixed abrasive, abrasive silicon carbide powder can be used. 1. 6 magnetic abrasive polishing magnetic abrasive polishing is the use of magnetic abrasive in the magnetic field is formed under the action of abrasive brush, grinding of workpiece. This method is of high efficiency, good quality, processing condition easy to control, good working conditions. Using appropriate grinding, the surface roughness can reach Ra0. 1μm。 The previous: bearing process variance analysis in the next article: rolling bearings of the production process of heat treatment