Today, Vibratory Polishing Machine manufacturers share the classification of polishing machines.
Ultrasonic polishing
The workpiece is placed in an abrasive suspension and placed together in an ultrasonic field, and the abrasive is ground and polished on the surface of the workpiece by the action of ultrasonic waves. Ultrasonic machining has a small macroscopic force and does not cause deformation of the workpiece, but it is difficult to manufacture and install the tooling. Ultrasonic processing can be combined with chemical or electrochemical methods. On the basis of solution corrosion and electrolysis, the ultrasonic vibration stirring solution is applied to dissociate the dissolved products on the surface of the workpiece, and the corrosion or electrolyte near the surface is uniform; the cavitation of the ultrasonic wave in the liquid can also inhibit the corrosion process, which is favorable for surface illuminating.
2. Fluid polishing
Fluid polishing relies on high-speed flowing liquids and abrasive particles carried by them to wash the surface of the workpiece for polishing purposes. Common methods are: abrasive jet processing, liquid jet processing, hydrodynamic grinding, and the like. The hydrodynamic grinding is hydraulically driven to cause the liquid medium carrying the abrasive particles to flow back and forth across the surface of the workpiece at high speed. The medium is mainly made of a special compound (polymeric substance) which flows at a relatively low pressure and is doped with an abrasive, and the abrasive can be made of silicon carbide powder.
3. Magnetic grinding and polishing
Magnetic grinding and polishing is the use of a magnetic abrasive to form an abrasive brush under the action of a magnetic field to grind the workpiece. This method has high processing efficiency, good quality, easy control of processing conditions and good working conditions. With a suitable abrasive, the surface roughness can reach Ra 0.1 μ m.
The polishing described in plastic mold processing is very different from the surface polishing required in other industries. Strictly speaking, the polishing of the mold should be called mirror processing. Not only does it have high requirements for polishing itself, but it also has a high standard for surface flatness, smoothness and geometric accuracy. Surface polishing generally requires only a shiny surface. The standard for mirror processing is divided into four levels: AO=Ra0.008 μ m , A1=Ra0.016 μ m , A3=Ra0.032 μ m , A4=Ra0.063 μ m, due to electropolishing, fluid polishing, etc. It is difficult to accurately control the geometric accuracy of parts, and the surface quality of chemical polishing, ultrasonic polishing, magnetic polishing and other methods can not meet the requirements, so the mirror processing of precision molds is mainly based on mechanical polishing.
information about vibratory polishing machine: https://www.zhongyun-machine.com/product/vibratory-polishing-machine/
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