【摘要】 为探究金刚石堆积磨料在树脂结合剂砂轮中的磨削性能,采用ZLB–60旋转式制粒机制备了金刚石浓度为150%、200%、250%的陶瓷结合剂金刚石堆积磨料,其单颗粒静压强度分别为61 N、65 N、36 N。选用金刚石浓度为200%的金刚石堆积磨料与相同原始粒度的单颗粒金刚石配比制备金刚石浓度为100%的树脂结合剂金刚石砂轮,在自制磨削平台上对YG8硬质合金进行磨削性能测试。磨削结果显示:当金刚石堆积磨料体积分数为30%时,树脂结合剂金刚石砂轮的磨削性能最佳,磨削比为145.11,磨削效率为13.64 g/h,较相同原始粒度单颗粒金刚石砂轮的分别提高了152%和40%。更多还原

【Abstract】 To explore the grinding performance of diamond agglomerate abrasive in resin bonded grinding wheels, we prepared ceramic bond diamond agglomerate abrasives with diamond concentrations of 150%, 200%, and 250%, respectively on ZLB-60 rotary granulator. The results show that the single-particle static pressure strength of diamond agglomerate abrasives was 61 N, 65 N, 36 N. We selected the agglomerate abrasive with a diamond concentration of 200% and the single-grain diamond with the same original particle size to prepare resin bond diamond grinding wheels with a diamond concentration of 100%, and conduct a YG8 cemented carbide grinding test on the grinding wheels through a self-made grinding platform. Results indicate that when the volume fraction of polycrystalline abrasive is 30%, the resin bond diamond wheel has the best grinding performance. The grinding ratio is 145.11 and the grinding efficiency is 13.64 g/h, which are increased by 152% and 40%, respectively when compared with those of the single-grain diamond wheels.更多还原