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X-ray diffraction study of anisotropic state of residual stress after down-cut and up-cut face grinding

Published online by Cambridge University Press:  29 February 2012

Zdenek Pala ,
Nikolaj Ganev  and
Jan Drahokoupil
Zdenek Pala
Affiliation:
Department of Solid State Engineering, Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, Trojanova 13, 120 00 Prague 2, Czech Republic
Nikolaj Ganev
Affiliation:
Department of Solid State Engineering, Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, Trojanova 13, 120 00 Prague 2, Czech Republic
Jan Drahokoupil
Affiliation:
Department of Solid State Engineering, Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, Trojanova 13, 120 00 Prague 2, Czech Republic and Institute of Physics, Academy of Sciences of the Czech Republic, Na Slovance 2, 182 21 Prague 8, Czech Republic
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Abstract

Differences between up-cut and down-cut grinding are usually not considered since both modes are alternating during conventional face grinding. Nevertheless, there is a pronounced distinction in the fashion of material removal which could lead to unequal states of surface residual stress. By means of X-ray diffraction analysis, ground plates made from three types of steel were investigated in order to compute and compare both macroscopic and microscopic residual stress and domains of coherent scattering. With respect to the main sources of residual stress generation, i.e., plastic and thermal deformation, machining process was carried out in two types of cooling environment. The results indicate significant influence of heat removal since differences between the two grinding modes are virtually nonexistent for liquid cooling, whereas dry grinding results in higher compressive normal residual stresses for down-cut mode in comparison to the up cut.

Keywords

up-cut and down-cut grindingresidual stressmicrostrainsX-ray diffraction
Type
X-Ray Diffraction
Information
Powder Diffraction , Volume 24 , Special Issue 2 , June 2009 , pp. 99 - 101
Copyright
Copyright © Cambridge University Press 2009

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