Abstract
Modern production technology requires new ways of surface examination and
a special kind of surface profile parameters. Industrial quality
inspection needs to be fast, reliable and inexpensive. In this paper it is
shown how stochastic surface examination and its proper parameters could
be a solution for many industrial problems not necessarily related with
smoothing out a manufactured surface. Burnishing is a modern technology
widely used in aircraft and automotive industries to the products as well
as to process tools. It gives to the machined surface high smoothness, and
good fatigue and wear resistance. Every burnished material behaves in a
different manner. Process conditions strongly influence the final
properties of any specific product. Optimum burnishing conditions should
be preserved for any manufactured product. In this paper we deal with
samples made of conventional tool steel – Sverker 21 (X153CrMoV12) and
powder metallurgy (P/M) tool steel – Vanadis 6. Complete investigations of
product properties are impossible to perform (because of constraints
related to their cost, time, or lack of suitable equipment). Looking for a
global, all-embracing quality indicator it was found that the correlation
function and the frequency analysis of burnished surface give useful
information for controlling the manufacturing process and evaluating the
product quality. We propose three new indicators of burnishing surface
quality. Their properties and usefulness are verified with the laboratory
measurement of material samples made of the two mentioned kinds of tool
steel.
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