The relation between the geometric parameters of grinding powders grains measured by laser diffraction and light-microscopical methods

Vladimir A Nosenko,Alexey A Aleksandrov,S Bratan,S Roshchupkin,S Gorbatyuk,S Leonov

doi:10.1051/matecconf/201822401129

Abstract

The studies were conducted on grinding powders of black silicon carbide with F180-F60 grit produced by Volzhsky Abrasive Plant. The length, width, perimeter, area and reduced diameter of the grain area were determined by light-microscopical method, the equivalent diameter by the laser diffraction method. The distribution laws of geometric parameters are determined. A direct proportional relationship between the mean equivalent diameter and the average geometric parameters of the grain fractions (length, width, perimeter, equivalent diameter) and the power-law dependence with the average area of the grain fractions have been established

Highlights

The pressing issue of abrasive processing is the study of the geometric parameters of grinding powders grains
One part was used to measure the equivalent grain diameter by laser diffraction method; the other was used to measure the geometric parameters of grains by light-microscopical method
The distribution curves of the equivalent fractions grain diameter of grinding powders made of black silicon carbide with F180-F60 grit are closer to a lognormal law

Summary

Introduction

The pressing issue of abrasive processing is the study of the geometric parameters of grinding powders grains. They affect the cutting ability and wear resistance of the abrasive tool, the force and temperature of cutting and the quality of the treated surface [1,2,3]. To measure the grain composition of various powders, express methods are widely used at present, including the laser diffraction method [4,5,6]. The laser diffraction method presents a grain in the form of a sphere whose volume is equivalent to the volume of the grain. The laser diffraction method makes it possible to measure a large number of grains per unit time. On Mastersizer devices, about 20,000 measurements are performed in 20 seconds [7]

Objectives

Methods

Findings

Conclusion