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When the mass fraction of the bonding agent increases to 22%, 24%, and 26%, the microstructure of the abrasive tool continues to be densified(white fused alumina). The bonding bridge also becomes thicker and the strength continues to increase, vitrified or porcelainized with binder, but the strength increases with the amount of bonding agent(aluminum oxide grit). But at this stage the number of pores in the cross section of the grinding tool is greatly reduced.

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The strength of the bond bridge itself becomes a bottleneck restricting the further increase in the strength of the abrasive test strip(black aluminum oxide). Therefore, the components in the binder will not react well, the flexural strength of the abrasive test strip has only slightly increased by increasing the amount of bonding agent(synthetic corundum). Different sintering temperature, resulting in insufficient reaction, the reaction of each binder component in the sample is different.

The microscopic morphology of the CA3A section fired at 850 ° C is because(white aluminum oxide), at this stage, the bonding bridge is already sufficiently thick, and the degree of bonding between the bonding phase and the abrasive particles is already very high. When the mass fraction of the bonding agent increases to 20%(high purity fused aluminum oxide), the microscopic morphology of the abrasive tool becomes more political, the bonding bridge becomes thicker, and the porosity further decreases.

Especially when the mass fraction of the binder is 26%, the number of pores in the cross section of the abrasive tool is very small(pink aluminum oxide). Too few pores will affect the grinding efficiency of ceramic corundum abrasive tools(emery abrasive). Therefore, considering the mechanical strength and grinding performance of ceramic corundum abrasive tools comprehensively, when the mass fraction of the bonding agent is 22%, the abrasive tool formulation is more appropriately selected.

Sintering is one of the key processes that determine the quality of ceramic abrasive tools(white corundum). Abrasive body is calcined at high temperature, and a series of physical and chemical changes occur together with the abrasive, and the abrasive is held firmly to meet the requirements of the abrasive tool to meet various grinding conditions(black silicon carbide). Among them, the firing temperature plays a decisive role in the performance of the binder.

The effect of increasing and increasing is not obvious(silicon carbide abrasive). The air holes have the functions of containing chips, removing chips and enhancing heat dissipation and cooling during the grinding process of the abrasive tool. As the firing temperature increases, the flexural strength of the ceramic corundum abrasive tool test strips rises to a greater extent(black silicon carbide factory), improving the bonding between the bonding agent and the abrasive particles.

If the sintering temperature is too high, the sample will expand and deform due to foaming, making the shape of the binder difficult to control(brown fused alumina price). If the sintering temperature is not enough, resulting in sample strength reduce. In addition, the binder used for ceramic corundum abrasives should be different from the ordinary fused corundum profile material, and should be fired at a lower temperature with a suitable binder(aluminum oxide abrasive).

In this experiment, the effects of different firing temperatures on the bending strength of the ceramic corundum abrasive bar CA3H(green silicon carbide), the microscopic morphology of the abrasive tool, and the microcrystalline structure in the ceramic corundum abrasive grains were compared and analyzed, and the comprehensive optimal firing was selected(aluminium oxide 36 grit). The temperature is used as the final sintering temperature in this experiment.