How to maintain the self-sharpening property of squaring wheel during grinding?
Publish Time: 2025-02-17
In the field of grinding, squaring wheel plays an important role in many processing scenarios with its unique shape and performance. Self-sharpening, as one of the key properties of grinding wheel, directly affects grinding efficiency and processing quality.Reasonable selection of abrasivesAbrasives are the core components of squaring wheel, and their performance directly determines the self-sharpening property of grinding wheel. Choose abrasives with high hardness, good toughness and strong self-sharpening property. For example, silicon carbide abrasives have high hardness and strong cutting ability. When grinding some materials with lower hardness, they can quickly cut into the surface of the workpiece. At the same time, during the wear process, the abrasive particles can break in time to form new sharp cutting edges, thereby maintaining the self-sharpening property of the grinding wheel. For grinding of metal materials with higher hardness, cubic boron nitride (CBN) abrasives are a good choice. CBN abrasives have extremely high hardness and chemical stability. They can withstand greater pressure and friction during the grinding process. They also have excellent self-sharpening properties and can continuously expose new cutting edges after wear to ensure the grinding effect.Optimization of binder matchingThe function of the binder is to bond the abrasive together to form the overall structure of the grinding wheel. The performance and matching method of the binder will affect the shedding speed of the abrasive, and then affect the self-sharpening of the grinding wheel. If the bonding strength of the binder is too high, the abrasive will be difficult to fall off after wear, which will cause the surface of the grinding wheel to become blunt and the self-sharpening property to decrease; on the contrary, if the bonding strength is too low, the abrasive will fall off prematurely, which will shorten the service life of the grinding wheel. Therefore, it is necessary to select a suitable binder and optimize its ratio according to the type of abrasive, the material of the grinding workpiece and the processing requirements. For example, the ceramic binder has high heat resistance and chemical stability, and can maintain good shape and dimensional accuracy during the grinding process. At the same time, its moderate bonding strength is conducive to the timely shedding of the abrasive and maintaining the self-sharpening property of the grinding wheel.Precise control of grinding parametersGrinding parameters include grinding speed, feed rate, grinding depth, etc. The selection and control of these parameters have an important influence on the self-sharpening property of the grinding wheel. During the grinding process, the grinding parameters should be precisely adjusted according to the characteristics of the grinding wheel and the material of the workpiece. If the grinding speed is too fast, the friction between the abrasive and the workpiece will increase, which will easily lead to premature wear and shedding of the abrasive; while if the grinding speed is too slow, the grinding efficiency will be reduced. The feed rate and grinding depth also need to be reasonably controlled. Excessive feed rate and grinding depth will cause the grinding wheel to bear too much pressure, resulting in uneven crushing and shedding of the abrasive, affecting self-sharpening; too small feed rate and grinding depth will make the cutting action of the grinding wheel insufficient, and the abrasive will not be able to update the cutting edge in time.Timely dressing and maintenanceRegular dressing of the squaring wheel is an important measure to maintain its self-sharpening. During the grinding process, the surface of the grinding wheel will gradually become blunt, and problems such as blockage and uneven wear will occur. By using dressing tools, such as diamond dressing pens, the passivation layer on the surface of the grinding wheel can be removed, new abrasive particles can be exposed, and the sharpness and self-sharpening of the grinding wheel can be restored. At the same time, attention should be paid to the cleaning and maintenance of the grinding wheel to avoid the accumulation of grinding chips and impurities on the surface of the grinding wheel, which will affect the grinding effect.To maintain the self-sharpening property of the squaring wheel during the grinding process, it is necessary to start from multiple aspects such as abrasive selection, binder matching, grinding parameter control and dressing and maintenance. Only by comprehensively considering these factors can we ensure that the squaring wheel always maintains good self-sharpening property during the grinding process and improve the grinding efficiency and processing quality.
