Chip shape analysis during dry machining of nodular cast iron
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Keywords:
Chip Analysis, Cast Iron, Dry Cutting, Milling, MachinabilityAbstract
hip shape in machining of metals not only reflects the quality and success of the operation but also carries the signs about the cutting mechanism. Most importantly, chips are responsible for the heat removal from the cutting zone which directly eliminates the thermal effects such as fatigue, shock, and early failure of edge due to excessive wear. Therefore, analysis of the chips is not only important in these aspects but also have significance in determination of the cutting parameters, lubricating and cooling conditions. This study addresses mentioned points by evaluating the milling parameters under dry cutting conditions to compare chip properties such as color, length, and helix etc. The evaluation was carried out by examining the microscopic images according to the experimentally obtained chips under two different levels of cutting speed, feed rate and depth of cut. The results of this experimental work are expected to be an idea for the future studies in the metal cutting sector.
References
Guzel, E.; Yuksel, C.; Bayrak, Y.; Sen, O.; Ekerim, A., Effect of section thickness on the microstructure and hardness of ductile cast iron. Materials Testing 2014, 56, (4), 285-288.
Bosnjak, B.; Asanovic, V.; Radulovic, B.; Pop-Tonev, K., Influence of microalloying and heat treatment on the kinetics of bainitic reaction in austempered ductile iron. Journal of Materials Engineering and Performance 2001, 10, (2), 203-211.
Keough, J. R.; Hayrynen, K. L., Automotive applications of austempered ductile iron (ADI): a critical review. SAE transactions 2000, 344-354.
Kilinc, B.; Kirtay, S., Influence of Cu addition and austempering treatment on mechanical properties and microstructure of GGG 50. Acta Physica Polonica A 2017, 132, (3), 461-465.
Rao, P. P.; Putatunda, S. K., Investigations on the fracture toughness of austempered ductile irons austenitized at different temperatures. Materials Science and Engineering: A 2003, 349, (1-2), 136-149.
Del Val, A. G.; Alonso, U.; Veiga, F.; Arizmendi, M., Wear mechanisms of TiN coated tools during high-speed tapping of GGG50 nodular cast iron. Wear 2023, 514, 204558.
Ghani, A.; Choudhury, I., Study of tool life, surface roughness and vibration in machining nodular cast iron with ceramic tool. Journal of Materials Processing Technology 2002, 127, (1), 17-22.
Şeker, U.; Hasirci, H., Evaluation of machinability of austempered ductile irons in terms of cutting forces and surface quality. Journal of Materials Processing Technology 2006, 173, (3), 260-268.
Ting, P. L., A Study of the Turning of Austempered Ductile Iron (ADI) Grades with Coated Carbide Tools. 2016.
Yılmaz, B.; Karabulut, Ş.; Güllü, A., A review of the chip breaking methods for continuous chips in turning. Journal of Manufacturing Processes 2020, 49, 50-69.
Rahman, M.; Seah, K.; Li, X.; Zhang, X., A three-dimensional model of chip flow, chip curl and chip breaking under the concept of equivalent parameters. International Journal of Machine Tools and Manufacture 1995, 35, (7), 1015-1031.
Yazman, Ş.; Akdemir, A.; Uyaner, M.; Bakırcıoğlu, B. In The Effect of Build Up Edge Formation on the Machining Characteristics in Austempered Ferritic Ductile Iron, ASME International Mechanical Engineering Congress and Exposition, 2013; American Society of Mechanical Engineers: 2013; p V02BT02A052.
Meena, A.; El Mansori, M., Specific cutting force, tool wear and chip morphology characteristics during dry drilling of austempered ductile iron (ADI). The International Journal of Advanced Manufacturing Technology 2013, 69, (9-12), 2833-2841.
Su, G.; Liu, Z.; Li, L.; Wang, B., Influences of chip serration on micro-topography of machined surface in high-speed cutting. International Journal of Machine Tools and Manufacture 2015, 89, 202-207.
Salem, S. B.; Bayraktar, E.; Boujelbene, M.; Katundi, D., Effect of cutting parameters on chip formation in orthogonal cutting. Journal of Achievements in Materials and manufacturing Engineering 2012, 50, (1), 7-17.
Yazman, Ş.; Gemı, L.; Uludağ, M.; Akdemır, A.; Uyaner, M.; Dişpinar, D., Correlation between machinability and chip morphology of Austempered ductile iron. J. Test. Eval 2017, 46, (3), 1012-1021.
