Common polishing methods of mold accessories

There are 6 methods for polishing mold accessories:

1. Mechanical polishing

Mechanical polishing is a polishing method to obtain a smooth surface by cutting and removing the convex part after polishing due to plastic deformation of the material surface. Generally, oilstone strips, wool wheels, sandpaper, etc. are mainly used for manual operation. For special parts such as the surface of the swivel, turntable and other auxiliary tools can be used. If the surface quality requirements are high, the method of ultra precision grinding and polishing can be used.

2. Chemical polishing

Chemical polishing is to make the micro convex part of the surface of the material dissolve preferentially than the concave part in the chemical medium, so as to obtain a smooth surface. The main advantage of this method is that it can polish workpieces with complex shapes without complex equipment.

Mold accessories

3. Electrolytic polishing

The basic principle of electropolishing is the same as that of chemical polishing, that is, the surface is smooth by selectively dissolving the small protruding parts on the surface of the material. Compared with chemical polishing, it can eliminate the influence of cathode reaction and has better effect.

4. Ultrasonic polishing

Put the mold parts into the abrasive suspension and put them together in the ultrasonic field. Relying on the oscillation of ultrasonic, the abrasive can be ground and polished on the surface of the workpiece. The macro force of ultrasonic machining is small and will not cause workpiece deformation, but the fabrication and installation of tooling are difficult.

Mold accessories

5. Fluid polishing

Fluid polishing relies on the high-speed flowing liquid and its abrasive particles to wash the workpiece surface to achieve the purpose of polishing. Common methods are: abrasive jet machining, liquid jet machining, hydrodynamic grinding, etc.

6. Magnetic abrasive polishing

Magnetic abrasive polishing is to use magnetic abrasive to form abrasive brush under the action of magnetic field to grind the workpiece. This method has the advantages of high processing efficiency, good quality, easy control of processing conditions and good working conditions.