CORRELATION OF DIAMOND GRINDING REGIMES
–TiC-CERAMIC SURFACE CONDITION
V. V. Kuzin
and S. Yu. Fedorov
Translated from Novye Ogneupory, No. 9, pp. 63 – 68, September, 2016.
Original article submitted August 15, 2016.
Results are provided for a study of the effect of planar grinding regimes with diamond wheels on
–TiC-ceramic surface condition. A correlation is established for grinding depth, and longitudinal and
transverse feed with roughness, waviness, and morphology of a machined surface. The correlations revealed
are planned for application in creating methodology for standardizing the precision of ceramic components
and its production provision.
Keywords: grinding, Al
–TiC-ceramic, roughness, waviness, ceramic surface layer morphology.
An important task of structural-technological preparation
for manufacture of objects is substantiated standardization of
the accuracy of component elements taking account of their
service designation . Permitted errors lead to unfavorable
consequences, i.e., joint seating is distorted, there is an in-
crease in difficulty of assembly, component precision is re-
duced, there is an increase in the amount of component rejec
tion, and their efficiency and operating life are reduced .
For high precision ceramic components solution of this
problem is made difficult by limitation of the choice and in
adequate study of procedures of their formation, and also the
complex nature of the effect of loads generated during ma
chining on the precision and condition of their surface layer
[4 – 6]. Marked differences in structure and properties of
prospective ceramic materials make it impossible to extend
features revealed for one form of ceramic to others [7, 8].
The same disadvantage of studying diamond grinding for fi
nal shaping of high-precision ceramic components makes it
impossible to formulate a procedural standardization of their
accuracy and to ensure its technological provisions [9, 10].
This situation determines the importance of studying the ef
fect of diamond grinding parameters on parameters for preci
sion of ceramic components and their technological provi
With respect to Al
–TiC-ceramic this research is pur-
sued very actively. It has been shown [11 – 14] that rough-
ness and undulation of a surface increases, and machining
precision decreases with intensification of diamond grinding.
A reduction in diamond wheel grain size leads to a reduction
in surface roughness and the degree of its defectiveness .
The complex mechanism of defect formation in a surface
layer of Al
–TiC-ceramic during grinding has been ana-
lyzed in [16, 17]. However, results of this research have not
been systematized, which makes it difficult to use them in re
solving an important technological task. The aim of this
work is to study the effect of diamond grinding regimes on
roughness, undulation, and surface morphology of a layer of
–TiC-ceramic in order to create a procedure for stan
dardizing component precision and its technological provi
sion. This article is a continuation of work in .
The main assumptions of the experimental procedure
have been given in detail in . Specimens are studied in
this work of high-density Al
–TiC-ceramic whose struc
ture is formed by grains of irregular shape with a size of
2–5mm with planar faces (Fig. 1). At the boundaries of
neighboring grains there are discontinuities of extended
shape with size up to 0.5 mm. Specimens of Al
ramic had ultimate strength in bending s
of 60 MPa, crack
, density ~4.3 g/cm
, and hard
ness HRA 93. These specimens were ground with the follow
Refractories and Industrial Ceramics Vol. 57, No. 5, January, 2017
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FGBOU VO Moscow State Technological University Stankin,