陶瓷空心球形复合超硬磨料低温磨削特性实验研究

针对空心球形复合超硬磨料的多微孔结构对磨削温度影响问题,研究了空心球形复合超硬磨料的结构,建立了空心球形磨料砂轮的磨削模型.从理论上分析了多微孔结构对砂轮的切削锋利度和携带冷却液能力的影响机制;运用温度测量系统,进行了陶瓷空心球形复合超硬磨料砂轮在不同磨削切深和不同冷却液供给量条件下的平面磨削温度实验研究,并分析了磨削温度随不同切深和冷却液供给量的变化趋势.研究结果表明,空心球形磨料砂轮的磨削温度明显低于传统超硬磨料砂轮,验证了空心球形磨料砂轮具有较锋利的切削刃和更好的携带冷却液能力,可有效降低磨削温度,是实现低温磨削的一种新途径.

Influence of multi-pore structure of ceramic hollow ball super hard abrasive on grinding temperature

In order to the influence of the multi-pore structure of the ceramic hollow ball super hard abrasive on the grinding temperature,the structure and grinding model of ceramic hollow ball composite super hard abrasive were investigated.The analysis of the mechanism of the effects of the multi-pore structure on depth of cut and flow of cooling fluid was made in theory.On the temperature,the effects of depth of cut and flow of cooling fluid were tested,varied trends of grinding temperature according to different depth of cut and flow of cooling fluid were analyzed.The experimental results show that the grinding wheel with hollow ball super hard abrasive has more holes in the working layer,it can carry more cooling fluid into the grinding area for heat exchanges and its grinding temperature is lower than normal super hard abrasives grinding wheel and thus reducing the grinding temperature can be.