(1) Liquid phenolic resin. The fluctuation range of indicators such as solid content, viscosity, gel time and water solubility of liquid phenolic resin has different degrees of influence, so the grinding wheel manufacturer must develop the technical indicators and range of liquid resin suitable for itself according to its own product performance requirements, combined with its own mixing, molding and hardening process characteristics. In addition, liquid phenolic resins must be stored correctly, because liquid phenolic resins are inherently very unstable, and their technical specifications can change even under room temperature conditions. The wheel manufacturer must store the liquid phenolic resin under low temperature conditions in order to ensure the stability of the liquid phenolic resin, which in turn ensures the stability of the resin wheel mix and the stability of the resin wheel quality.

(2) Powdered phenolic resins. For powdered phenolic resins, fluctuations in flow length (fluidity), particle size, urotropine content and gelling time can affect the quality stability of the resin grinding wheel. In this regard, flow length is the first consideration that should be made. These indicators illustrate the changing behavior of the resin under certain experimental conditions. They are only resin performance indications, and the exact magnitude of the effect on the performance of the grinding wheel product can only depend on the actual application of each resin wheel plant. The flow of the powder resin is the most important performance indicator affecting the structure of the bond, the particle size affects the amount of wetting agent, and the content of volatile components (free phenol, moisture) 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 tool.

(3) Stability of the technical index of the mesh. The most important role of mesh flakes initially applied in resin grinding wheels is to improve the strength of grinding wheels. With the continuous improvement of the performance of resin grinding wheels, the role of mesh in resin grinding wheels becomes very important. It is mainly manifested in the fluctuation of grinding wheel strength, the deformation of slices, and the delamination of grinding discs. Theoretically speaking, under the condition that the grinding wheel production process is stable and allowed, the higher the gum content of the mesh, the higher the strength of the grinding wheel, the better the bonding performance, and the more stable the cutting and grinding at the same time.