期刊
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
卷 210, 期 6-7, 页码 899-906出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jmatprotec.2010.02.002
关键词
High speed grinding; Engineering ceramics; Brazed diamond wheels
资金
- National Science Foundation of China [50825505]
- Department of Science and Technology in Fujian Province/China [2006F1007, 2007H2003]
An investigation was undertaken to explore the grinding characteristics and removal mechanisms in high speed grinding of three engineering ceramics alumina, silicon nitride, and zirconia by using brazed diamond wheels of two different grit sizes. The grinding forces and surface roughness were measured and the morphological features of ground workpiece surfaces were examined. The results indicate that material removal mechanisms are different for the three ceramics at high grinding speeds. For alumina, the removal is dominated by brittle fracture. For silicon nitride and zirconia, the ductile removal prevails in the grinding. For each of the three ceramics, grinding power per unit width is found to be nearly proportional to the rate of plowed surface area generated per unit time per unit width, indicating that the grinding energy expended is mainly associated with sliding and plowing. (C) 2010 Elsevier B.V. All rights reserved.
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