Predicting the size of the area of abrasive grain bluntness for the various technological conditions
Authors: Ardashev D.V.
Published in issue: #10(46)/2015
DOI: 10.18698/2308-6033-2015-10-1417
Category: Mechanical Engineering and Machine Science | Chapter: Technology and Equipment of Mechanical and Physical Processing
The main indicators that determine the performance of abrasive tools are the intensity and the degree of its bluntness. When considering the discrete contact of the grinding wheel with the workpiece one can use the size of the area of bluntness as such parameter. The suggested mathematical model of the area of abrasive grain bluntness for the first time takes into account the basic mechanisms of wear and tear - mechanical and physico-chemical. Mechanical wear is analyzed from the standpoint of the kinetic theory of strength of a solid body, and physico-chemical wear - from the standpoint of the theory of mass transfer. Since the analyzed wear of abrasive grains depends on the initial area of bluntness, this model for the first time takes into account nonlinear feedback on the size of the area of bluntness. Thus, the mathematical model is multifactorial and predicts the amount of wear of the abrasive tool in various process conditions.
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