Grinding and polishing is to remove the blemishes, scratches, grinding lines and other processing traces left by the previous process to obtain a smooth surface, and at the same time it can improve the anti-wear and anti-corrosion ability.
In order to make the processed cemented carbide products look more beautiful, we often need to polish the surface of the cemented carbide products. Grinding and polishing is to remove the blemishes, scratches, grinding lines and other processing traces left by the previous process to obtain a smooth surface, and at the same time it can improve the anti-wear and anti-corrosion ability. So, what is the commonly used cemented carbide grinding method?
Because the hardness of cemented carbide is relatively high, it cannot be polished with ordinary metallographic sandpaper, but can be ground with emery. Our common method is to grind on a diamond grinding machine. Diamond grinding wheels have very unique effects when grinding cemented carbide and non-metallic materials. The diamond grinding wheel can maintain the shape of the cemented carbide better, and the precision of the workpiece is very high; there are more air holes in the grinding wheel, which is conducive to chip removal and heat dissipation during grinding, and is not easy to cause blockage and burn the workpiece; The self-sharpening of the grinding wheel is better, and it is easier to dress with a diamond grinding wheel for grinding carbide.
In short, the diamond grinding wheel has the characteristics of high hardness, high compressive strength and good wear resistance, and is an ideal tool for grinding and processing cemented carbide. However, when grinding steel materials with diamond grinding wheels, especially when grinding special steel, the effect is not significant. It is most suitable for processing difficult-to-grind steel materials with high hardness, high viscosity, high high-temperature strength, and low thermal conductivity, as well as high-speed or ultra-high-speed grinding. Its application range and artificial diamond play a complementary role.
Compared with the grinding wheels made of boron carbide, silicon carbide, corundum and other general abrasive grains, the diamond grinding wheel has sharper edges, less wear, long life, high productivity, and good processing quality, but it is expensive, and is more suitable for fine grinding of hard alloys, High-hardness, brittle and difficult-to-machine materials such as ceramics and semiconductors
Compared with the grinding wheels made of boron carbide, silicon carbide, corundum and other general abrasive grains, the diamond grinding wheel has sharper edge angle, less wear, long service life, high productivity and good processing quality, but it is expensive, so it is suitable for fine grinding of cemented carbide and ceramics. High-hardness, brittle and difficult-to-machine materials such as semiconductors and semiconductors.
There is nothing wrong with choosing four types of grinding wheels when grinding alloy steel.
In addition, cemented carbide can also be polished with an ultrasonic polishing machine, or wood chips and bamboo chips can be coated with abrasive paste, and polished manually, but the efficiency is relatively low.
