MATEC Web Conf.
Volume 101, 2017Sriwijaya International Conference on Engineering, Science and Technology (SICEST 2016)
|Number of page(s)||7|
|Section||Mechanical, Industrial and Manufacturing Engineering|
|Published online||09 March 2017|
Evaluation of cutting force and surface roughness in high-speed milling of compacted graphite iron
1 Faculty of Mechanical Engineering, Universiti Teknologi Malaysia, 81310 Johor Bahru, Malaysia
2 Manufacturing System R&D Division, Korea Institute of Industrial Technology, Republic of Korea
3 Department of Industrial and Information Systems Engineering, Chonbuk National University, Republic of Korea
4 Department of Mechanical Engineering, Universitas Sriwijaya, 30162 Inderalaya, Indonesia
* Corresponding author: firstname.lastname@example.org
Compacted Graphite Iron, (CGI) is known to have outstanding mechanical strength and weight-to-strength ratio as compared to conventional grey cast iron, (CI). The outstanding characteristics of CGI is due to its graphite particle shape, which is presented as compacted vermicular particle. The graphite is interconnected with random orientation and round edges, which results in higher mechanical strength. Whereas, graphite in the CI consists of a smooth-surfaced flakes that easily propagates cracks which results in weaker and brittle properties as compared to CGI. Owing to its improved properties, CGI is considered as the best candidate material in substituting grey cast iron that has been used in engine block applications for years. However, the smooth implementation of replacing CI with CGI has been hindered due to the poor machinability of CGI especially at high cutting speed. The tool life is decreased by 20 times when comparing CGI with CI under the same cutting condition. This study investigates the effect of using cryogenic cooling and minimum quantity lubrication (MQL) during high-speed milling of CGI (grade 450). Results showed that, the combination of internal cryogenic cooling and enhanced MQL improved the tool life, cutting force and surface quality as compared to the conventional flood coolant strategy during high-speed milling of CGI.
© The Authors, published by EDP Sciences, 2017
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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