1. Before the abrasive tool is fired, there must be a certain strength of wet blank and dry blank to facilitate unloading, removal, blank transportation and kiln loading operations. Therefore, in the formula, the relevant formula data should be determined according to the characteristics of the factory's equipment, the degree of mechanization of the production process, and even the smoothness of the workshop road surface.
2. For abrasive tools that need to be processed in semi-finished products before the kiln, the dry billet strength should be considered higher.
3. It should be beneficial to the mixing operation and the sieving operation. For this reason, for fine-grained abrasives, hard abrasives and silicon carbide abrasives with a large amount of binder added in the formula, the amount, density or concentration of wetting agents and temporary binders are generally different. For coarse and medium grit abrasives.
4. From the perspective of formula, try to avoid possible waste products (such as cracks caused by excessive shrinkage, foaming, deformation, etc.). Special attention should be paid to the particle size and hardness (such as fine particle size, abrasive tools with high hardness) that are prone to waste products.
5. It should be ensured that the mill has sufficient strength from the point of view of formulation. Especially for abrasive tools that are prone to breakage (such as coarse-grained soft grinding wheels, etc.). The principles are as follows:
◆ The new product should have the same hardness as the old product.
◆ The particle size of the abrasive should be the same.
◆ The bulk density of the abrasive is the same or lower.
◆ The abrasive strength should be the same or the new abrasive strength should be higher.
◆ The new formulation should have the same or higher tensile strength.
◆ New formulations have the same or lower density.
◆ The new formulations have the same or lower elastic modulus.
The above principles can be roughly summarized as: use abrasives with higher strength, use binders with high strength and low elastic modulus to reduce the amount of binding and increase porosity, use abrasives with low bulk density or lower abrasive density to make grinding The organization of the tool is looser.
