The paper reviews experimental research on the performance of cubic boron nitride (CBN) grinding wheels and discusses advantages and difficulties experienced in the application of CBN wheels particularly for internal grinding with fine grain wheels. The hardness of CBN grains potentially increases redress life and improves dimensional stability. The problem is that increased redress life increases the importance of avoiding wheel loading, particularly for small grain wheels. This paper highlights the importance of touch dressing for improved dimensional stability and other operational techniques to maintain an open surface topography of the wheel. Effects on grinding temperature are also illustrated.
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