Grinding wheels are a common type of abrasive tool, sometimes also referred to as bonded abrasives. Besides white aluminum oxide grinding wheels, other types of grinding wheels, such as brown aluminum oxide wheels, are categorized primarily based on their intended use and performance. Grinding wheel quality is often of concern.
Grinding wheel quality isn't affected by a single factor; it can be said that poor quality affects every step of the process, from raw materials to factory delivery. Grinding wheel quality is generally focused on two key aspects: the hardness and crack resistance of white aluminum oxide grinding wheels. These two properties determine the grinding performance and lifespan of the wheel.
In fact, beyond these two factors, other indicators are also of concern. While they may not directly impact grinding wheel quality, they can potentially affect performance and thus reduce its quality. For example, the porosity and microstructure unevenness of white aluminum oxide grinding wheels.
Microstructure unevenness in white aluminum oxide grinding wheels may appear insignificant on the surface, but in use, it can lead to uneven mechanical forces, making it impossible to rotate and generate grinding forces, and can even cause significant damage to the machine.
There are many reasons for this phenomenon, such as poor mixing of the mold material or uneven distribution of the mold material in certain areas of the mold, which can lead to uneven concentrations of abrasive and binder. Alternatively, during pressing, the mold material may have varying degrees of compaction in certain areas, expelling varying amounts of air and creating pores of varying sizes and pore paths, leading to uneven structure in the white aluminum oxide grinding wheel.
This explains why the quality of a white aluminum oxide grinding wheel cannot be judged solely on one aspect; it requires a comprehensive assessment.
