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Mould polishing must pay attention to the basic knowledge

How to improve the quality of the product directly affects the quality of the product is an important task in the process of the development of industrial products to diversification. In the process of mould manufacturing, the smooth machining and the mirror surface machining are called the surface grinding and polishing, which is an important process to improve the quality of the mold. Master reasonable polishing method, can improve the quality and service life of the mold, and then improve the quality of products.
A common polishing method and working principle
1 mechanical polishing
Mechanical polishing by cutting or surface plastic deformation and remove protruding workpiece surface smooth surface polishing method of general use, oilstone, wool wheel, sand paper, mainly manual, high surface quality can be used for ultra precision polishing. The ultra precision polishing is a special abrasive tool, which is used to make the high speed rotating movement in the process of grinding and polishing with the abrasive. Using this technique, the surface roughness of ra0.008 m is achieved, which is the best of all kinds of polishing method. This method is often used in optical lens die. Mechanical polishing is the main method of die polishing.
2 Chemical Polishing
Chemical polishing is the material in the chemical medium to make the surface of the convex part of the concave part of the first dissolved, so as to get smooth surface. The method can be used to polish the workpiece with complex shape and can be polished with a lot of work pieces at the same time. The surface roughness obtained by chemical polishing is generally RA10 M.
3 electrolytic polishing
The basic principle of electrolytic polishing and chemical polishing the same, that is, by selective dissolution of the material surface micro convex part, so that smooth surface. Compared with chemical polishing, it can eliminate the influence of the cathode reaction, the effect is good.
4 ultrasonic polishing
Ultrasonic polishing is a kind of processing method of the ultrasonic vibration of the tool section, and the hard material is polished by the abrasive suspension. Put the workpiece in the abrasive suspension and put it in the ultrasonic field, and depend on the vibration of ultrasonic, so that the abrasive in the workpiece surface grinding and polishing. The ultrasonic machining is small, will not cause the distortion of the workpiece, but it is difficult to manufacture and install.
5 fluid polishing
Fluid polishing is to rely on the flow of liquid and its carrying abrasive particles to achieve the purpose of polishing the surface of the workpiece surface. Fluid power is driven by hydraulic pressure, the medium is mainly used in the low pressure flow of a good special compound (polymer material) and the incorporation of abrasive, abrasive can be made of silicon carbide powder.
6 magnetic abrasive polishing
Magnetic abrasive polishing is the use of magnetic abrasive in the field of the formation of abrasive brush, the workpiece grinding process. This method has high efficiency, good quality and easy control. The surface roughness can be reached to ra0.1 m by using suitable abrasive.
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