Investigation on Effect of Material Compositions on Machinability of Carbon Steels
Loading...
Date
2019
Journal Title
Journal ISSN
Volume Title
Publisher
International Conference on Engineering for Sustainable World
Abstract
Steels are basically classified based on their carbon contents. In view of this, the
processing of steels is greatly affected by their composition, particularly their carbon
content. This paper reports on the machinability of three different steels with varying
carbon contents. The steel samples were sourced from Owode metal market in Ilorin,
Kwara State and their percentage compositional analysis was carried out at Universal
Steels Limited, Lagos. The steel samples were classified into high, medium and low
carbon steels based on their percentage carbon content. The machining condition was wet
and the machining parameters used were depth of cut (0.2 – 0.6 mm), feed rate (0.05 –
0.15 mm/rev), and cutting speed (100 - 150 rpm). The experimental runs were designed
using Taguchi orthogonal array of Minitab version 16 and the cutting temperature was
monitored with a digital thermometer and k-type thermocouple wires. The experimental
results were analysed using Minitab 18 with a focus on percentage contribution of
various factors affecting surface roughness, chip morphology, cutting temperature and
material removal rate. Results show that surface finish is highest in low carbon steel and
lowest in high carbon steel. The responses show that machinability of the steel improved
with a reduction in carbon content.
Description
Staff Publication
Keywords
Machinability,, Steel,, Surface Roughness,, Carbon content