4. Ultrasonic polishing
Ultrasonic polishing is a processing method that uses a tool section for ultrasonic vibration to polish a brittle hard material through an abrasive suspension. 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.
5. Fluid polishing
Fluid polishing relies on flowing liquid and the abrasive particles it carries to wash the surface of the workpiece for polishing purposes. Hydrodynamic grinding is driven by hydraulics. The medium is mainly made of a special compound (polymeric substance) that flows at a lower pressure and is incorporated into an abrasive. The abrasive can be made of silicon carbide powder.
6. Magnetic grinding and polishing
Magnetic grinding and polishing is the use of 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 and easy control of processing conditions. With a suitable abrasive, the surface roughness of the processing can reach Ra 0.1 μm.
7. Electric spark ultrasonic composite polishing
In order to improve the polishing speed of the workpiece with the surface roughness Ra of 1.6μm or more, the ultrasonic wave is combined with the special high-frequency narrow pulse high peak current pulse power supply for composite polishing, and the ultrasonic vibration and the electric pulse corrosion simultaneously act on the surface of the workpiece, and rapidly reduce The surface roughness, which is effective for polishing the rough surface of the mold after machining by car, milling, electric spark and wire cutting, is very effective.