Abstract
This paper presents the results of the surface fatigue strength of cast iron EN-GJSF after grinding and burnishing with a force of P = 1000 N, 3000 N, 4000 N and 5000 N. In comparison to grinding, tests have revealed that burnishing increases the surface strength by about 140 – 170%. The research has demonstrated that the size of plastic deformation increases together with increasing strength. It was determined that the form of graphite and its distribution are essential to the development of fatigue cracks.
About this article
Received
05 July 2011
Accepted
01 September 2011
Published
30 September 2011
Keywords
spheroidal cast iron
surface layer
grinding
burnishing
surface fatigue strength
Copyright © 2011 Vibroengineering
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