Passivation Model of Diamond Grinding Wheel in Constant-Force Grinding of Si<,3>N<,4> Ceramic
Grinding wheel passivation is an inevitable phenomenon during grinding process. It has important guiding significance for the formulation of grinding technique to unveil the passivation rule and generation mechanism. Taking grinding efficiency as evaluation indicator, the passivation curve of grinding wheel during full passivation period under the constant-force grinding condition is established through experiments in this dissertation, which is divided into three stages according to passivation speeds and passivation patters, i. e. early passivation stage, stable passivation stage and sharp passivation stage. Of which, the passivation speed is the slowest but with the highest grinding efficiency in early passivation stage. The change of passivation curve with the time is a process from concave to convex, which is totally different from the wearing process of grinding wheel in this stage. With combination of experiment conditions and wearing characteristics of grinding wheel, the passivation rule and its gene ration reasons are discussed deeply. Furthermore the exponential function y=ab<x> is adopted to make fitting for passivation curve based on the scatter plot of stable passivation stage and regression equation is derived through the fitting result of origin thus to testify the correctness of the inference.
Grinding wheels Passivation curve Constant-force grinding Grinding efficiency
Xinli Tian Zhiyuan Wu Anying She Zhongxiang Hu
National Key Laboratory for Equipment Remanufacturing, Institute of Armored Force, Beijing, China, 100072
国际会议
第14届全国磨粒技术学术会议(14th Conference of Abrasive Technology in China)
南京
英文
94-97
2007-10-26（万方平台首次上网日期，不代表论文的发表时间）