Resinoid grinding wheel is a large family among many grinding wheels. There are many types of resinoid grinding wheels, and they are used in many places and in large quantities. The functions of resinoid grinding wheel include grinding, cutting, grooving, etc. The most common one is grinding the appearance of the workpiece to improve the appearance quality of the workpiece or the standard of use.
No matter what kind of grinding wheel product, long-term use will cause wear. After years of practical summary, we found that the wear forms of grinding wheels are mainly the following:
1. Abrasion wear type. When the abrasive grains are severely abraded and worn, and an obvious wear plane appears on the top surface of the abrasive grains, the surface of the grinding wheel is flat and smooth. At this time, the total wear area of the cutting edge increases, the friction intensifies, and the cutting edge is difficult to cut into the surface of the workpiece. However, the hardness of the grinding wheel is too high, so that the abrasive grains cannot be broken and detached in time. If it continues to be used, the grinding force and grinding heat will increase significantly, and obvious vibration and noise will appear, and the material cannot be effectively removed. At this time, the grinding wheel must be trimmed.
2. Grinding wheel clogging type. During grinding, a large amount of chips are attached to the surface of the grinding wheel, which is called grinding wheel clogging. There are two types: one is the intrusion type blockage, that is, the chips drill into the gaps on the surface of the grinding wheel. This type of blockage is easy to occur when grinding steel. The other is the adhesion type blockage, where the chips are fused on the surface of the abrasive and the binder, covering the abrasive cutting edge. This adhesion type blockage occurs when grinding non-ferrous metals such as titanium alloys, copper alloys, magnesium alloys and other materials with good ductility and low melting points. When the grinding wheel is blocked to a certain extent, its cutting ability is significantly reduced, and it is easy to have obvious vibration and noise, and even burns.
3. Shedding type. Shedding is easy to occur in situations where the hardness of the grinding wheel is too soft, that is, when the hardness of the grinding wheel is too low or the grinding conditions are too heavy, the self-sharpening effect is very strong, causing the grinding wheel to lose its normal geometric shape, so that the grinding wheel cannot work normally. At this time, the grinding wheel can still continue to work, but the geometric accuracy and roughness of the grinding wheel surface have been lost, so necessary dressing must be carried out.
Resinoid grinding wheels will also experience these wear conditions during use. We need to discover them in time and replace them with new resinoid grinding wheels in time to avoid affecting the production. At the same time, the old grinding wheels that can be dressed should be dressed in time to avoid waste.
