The selection of the grinding wheel is an important step during the process planning of grinding operations, especially for high-quality small components of hardened steel. The correct choice of the grinding wheel and the proper selection of cutting parameters can provide ground surfaces with high quality and positively affect the economic aspects of the process. The present work compares the performance of seeded-gel and CBN grinding wheels in external cylindrical plunge grinding of 100Cr6 steel in a range of high peripheral speeds, where it is possible to use both grinding wheels. The comparison was made taking into account the workpiece surface roughness and indices like the grinding ratio, specific grinding energy and grinding efficiency. The use of the CBN grinding wheel resulted in lower surface roughness values than those obtained with the seeded-gel grinding wheel. For both grinding wheels, there was a tendency that increasing peripheral speed reduces the surface roughness values. The best performance of the seeded-gel grinding wheel was found at 150 mm³/min/mm, where the grinding efficiency increased with the peripheral speed, and the highest value of all the performed experiments was achieved at 80 m/s. This value was approximately three times the grinding efficiency of the CBN grinding wheel under the same cutting conditions. The highest grinding efficiency for the CBN grinding wheel was achieved at 200 mm³/min/mm and 80 m/s. The grinding efficiency of the seeded-gel wheel dropped for this cutting condition due to higher wheel wear.

砂轮的选择是磨削作业过程规划中的重要步骤，特别是对于高品质小尺寸淬硬钢件。正确选择砂轮和正确选择切削参数可以为地面提供高质量的产品，并对加工的经济性产生积极影响。本工作比较了在高圆周速度范围内可以同时使用两个砂轮的100Cr6钢外圆圆柱切入磨削中的种子凝胶和CBN砂轮的性能。进行比较时要考虑到工件的表面粗糙度和诸如磨削比，比磨削能和磨削效率之类的指标。使用CBN砂轮所产生的表面粗糙度值低于使用种子凝胶砂轮所获得的表面粗糙度值。对于两个砂轮，都有提高圆周速度会降低表面粗糙度值的趋势。种子凝胶砂轮的最佳性能为150 mm³ / min / mm，其中磨削效率随着圆周速度的增加而增加，所有执行的实验的最高值均达到80 m / s。在相同的切削条件下，该值约为CBN砂轮的磨削效率的三倍。CBN砂轮的最高磨削效率达到200 mm ³ / min / mm和80 m / s。在这种切削条件下，由于较高的砂轮磨损，籽晶砂轮的研磨效率下降。