Resin grinding wheel is a grinding wheel made of resin with high strength. Used in cutting discs, double face, heavy duty grinding wheels, polishing wheels, etc. It has the characteristics of certain elasticity, low heat resistance, good self-sharpening, easy production and short process cycle. It is widely used for rough grinding, rough grinding, cutting and free grinding, such as grinding steel ingots, casting burrs, etc.
It is a grinding wheels made of resin, such as phenolic, epoxy, polyurethane, polyvinyl alcohol, etc. The resin grinding wheel has high strength, and can add reinforcing fiber mesh and steel bars to the grinding wheel. Such as cutting discs, grinding discs. Most of our resin wheels are not waterproof and cannot be ground with abrasive fluids. Of course, there are also some resin grinding wheels that need to be ground with grinding fluid. Such as epoxy and resin grinding wheels, the grinding smoothness is good, and the workpiece is not easy to burn. Resin grinding wheels are used in cutting discs, double-faced, heavy-duty grinding wheels, polishing wheels, etc. The strength of resin bond grinding wheel is lower than that of metal bond and vitrified bond.
Sometimes we will find that the resin grinding wheel has bubbles, in fact, this is caused by the irregularity of the formula or details in the production process. If you want to reduce this phenomenon, you must pay attention to the standardization of processing. Let’s take a look at how to reduce the bubble phenomenon?
The powder filler is first subjected to high temperature calcination activation heat treatment, and then cooled to room temperature, and then the resin diamond grinding wheel is produced according to the conventional powder hot pressing method. The heat treatment temperature is 300-850 DEG C, the time is 1-6 hours, the atmosphere is air, and the pressure is normal pressure.
High temperature calcination heat treatment. On the one hand, the physically adsorbed water and chemically bound water in the powder filler can be removed. At the same time, the powder filler forms a relatively stable phase structure. On the other hand, a fresh surface is formed on the surface of the filler particles. This reduces the formation of air bubbles during production and use of resin wheels. The bonding strength and service life of the resin grinding wheel body are improved.
The solution to the bubbles of the resin grinding wheel is generally as mentioned above. As long as you pay attention to every detail during production. It will reduce the occurrence of these conditions and increase the service life.