Raw materials determine the quality of the grinding wheel
The grinding effect of the grinding wheel in industrial production is irreplaceable. The grinding wheel with good quality has better effect and longer life, and of course it is more favored by users. The quality of the grinding wheel is determined by the raw materials used to make the grinding wheel. Good raw materials can produce high quality grinding wheels, and vice versa. Let us talk about the importance of raw materials to the grinding wheel:
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1. Powder phenolic resin. For powdered phenolic resins, fluctuations in flow length, particle size, urotropine content and gelation time can affect the quality of the grinding wheel. The flow of the powder resin is the most important performance index affecting the structure of the binder. The size of the particle size affects the amount of the humectant, and the content of the volatiles is also important. In the actual grinding wheel production process, it is necessary to ensure the stability of the performance of each batch of powder resin, so as to ensure the quality of the grinding wheel.
2. The stability of the technical indicators of the mesh. The mesh was originally applied to the resin wheel and the most important role was to increase the strength of the wheel. As the performance of the resin grinding wheel continues to increase, the role of the mesh in the resin grinding wheel is very important. Mainly manifested in: fluctuations in the strength of the grinding wheel, deformation of the slice, stratification of the grinding plate, and so on. The thickness of the mesh has an influence on the strength and viscosity of the grinding wheel and the cutting and grinding performance of the resin wheel. Theoretically, under the condition that the grinding wheel is stable and allowed, the mesh has a higher amount of glue, and the grinding wheel has The higher the strength, the better the bonding performance and the more stable the cutting.
3. Liquid phenolic resin. The fluctuation range of solid content, viscosity, gel time and water solubility of liquid phenolic resin has different degrees of influence. Therefore, the grinding wheel manufacturer must combine its own mixing, molding and hardening process characteristics according to its own product performance requirements. , develop the technical indicators and scope of liquid resin suitable for you.
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The hardness of the grinding wheel refers to the difficulty of the abrasive grains on the surface of the grinding wheel falling off under the action of grinding force. The hardness of the grinding wheel is soft, which means that the abrasive grains of the grinding wheel are easy to fall off, and the hardness of the grinding wheel is hard, indicating that the abrasive grains are difficult to fall off. The hardness of the grinding wheel and the hardness of the abrasive are two different concepts. The same kind of abrasive can be made into grinding wheels of different hardness, which is mainly determined by the performance and quantity of the bonding agent and the manufacturing process of the grinding wheel. The significant difference between grinding and cutting is that the grinding wheel has “self-sharpness”. Choosing the hardness of the grinding wheel is actually choosing the self-sharpness of the grinding wheel. I hope that the sharp grinding particles should not fall off too early, and should not be blunt or not. Fall off.
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