
446 Fundamentals of Machining Processes
limited depth of 20 μm. MAF is currently used in micronishing of internal
and external surfaces of materials ranging from carbon and stainless steel to
ceramics and thermosetting plastics. During nishing of bearing surfaces,
the roughness was lowered from 0.5–0.6 to 0.05–0.06 μm in 30–60 s.
14.3.3 Micro-Superfinishing
During conventional supernishing, stones tend to glaze or dull or become
loaded such that the material removal and surface nish vary. The stock
removal rate can be enhanced by introducing vibrations that reduce the
loading of the abrasive stones with chips. The use of coated abrasives