Tribological interactions at the wheel–workpiece interface in surface grinding of construction stone

Abstract

AbstractThis study was conducted to elucidate the interactions at the tool–workpiece interface during surface grinding of three typical granites—black, gray and red—by using a diamond wheel. The consumed power, the forces and temperatures generated at the grinding zone were in‐process monitored and the morphological features of ground granite surfaces were examined. The average load per diamond grit, energy partitions at the wheel–granite interface, and diamond tip temperatures were subsequently estimated based on the measurements of force, power and temperature. The normal force was found to be comparable for the three workpieces, but the tangential force was greater in either wet grinding red granite or dry grinding black granite due to their different removal mechanisms and friction conditions. Approximately linear relationships between the power and ploughed surface area generated per unit time per unit width were established for the three granites and the surface energy for the red granite was found to be higher than for the other two granites. The energy partitions into the granite were found to be about one‐third. Copyright © 2004 John Wiley & Sons, Ltd.