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Isıl işlemsiz ve küreselleştirilmiş Ç52100 rulman çeliğinin farklı takımlarla işlenmesinde takım ömrü ve aşınmasının incelenmesi

Bu çalışmada, ısıl işlemsiz ve küreselleştirilmiş Ç52100 rulman çeliğinin farklı takımlarla işlenmesinde ana kesme parametreleri ile iş parçası ve takım sertliklerinin, takım ömrü ve takım aşınması üzerindeki etkileri araştırılmıştır. Üç farklı kesici takım kullanılmıştır. Bunlar; %70 $Al_2O_3$ + %30 TiC matris esaslı kaplamasız karma alümina seramik, %70 $Al_2O_3$ + %30 TiC matris esaslı ve PVD yöntemiyle TiN kaplı seramik ve CVD tekniğiyle Ti(C,N)+$Al_2O_3$+Ti(C,N)+TiN kaplı karbürdür. İşlenebilirlik deneyleri kuru kesme şartları altında yapılmıştır. Taguchi deneysel tasarım tekniği kullanılmış ve probleme uygun ortogonal dizi $L _{18}$($2^1x3^7$) seçilmiştir. Kontrol faktörleri ve etkileşimlerinin takım ömrü üzerindeki etkileri üç boyutlu (3D) yüzey kontur grafikleri ile açıklanmıştır. Aşınmış uçların tarama elektron mikroskobu (SEM) görüntüleri incelenerek takım aşınma tipleri belirlenmiştir. Isıl işlemsiz Ç52100 rulman çeliğinin işlenmesinde en iyi takım ömrü performansını kaplamalı seramik takımlar sağlamış bunu kaplamasız seramik ve kaplamalı karbür takımlar izlemiştir. Küreselleştirilmiş Ç52100 rulman çeliğinin işlenmesinde ise kaplamalı karbür takımlar daha iyi takım ömrü performansı sergilemiştir. Küreselleştirilmiş rulman çeliğinin işlenmesinde genel olarak tüm takımlarda düzenli yanak aşınması oluşmakta iken, ısıl işlemsiz rulman çeliğinin işlenmesinde yanak ve krater aşınması anlamlı bir şekilde artmıştır.

The investigation of tool life and wear in the machining of non-heat treated and spheroidized AISI52100 bearing steel with different cutting tools

In this study, the effects of main cutting parameters and the effects of work piece hardness and tool hardness on tool life and tool wear have been investigated in the machining of non-heat treated and spheroidized AISI52100 bearing steel by different cutting tools. Three types of cutting tools were used for the present work. These were mixed alumina ceramic with an $Al_2O_3$ (70%) +TiC (30%) matrix, PVD-TiN coated mixed ceramic with a matrix of $Al_2O_3$ (70%) +TiC (30%) and CVD Ti(C, N) +$Al_2O_3$+Ti(C, N) +TiN coated carbide tools. Machining tests were carried out under dry condition. Taguchi experimental design technique was used and $L _{18}$ ($2^1x3^7$) orthogonal array was selected to problem conveniently. Effects of control factors and their interactions on tool life were explained by three dimensional (3D) surface contour graphs. Types of tool wear were determined by observation of shown worn surfaces with a scanning electron microscope (SEM). Ceramic cutting tools showed the best tool life performance than the other tools in the machining of non-heat treated AISI52100 bearing steel and uncoated ceramic and coated carbide tools followed it, respectively. On the other hand; coated carbide tools showed better tool life performance than others in the machining of spheroidized AISI52100 bearing steel. Whereas a uniform-regular flank wear was occurred in the machining of spheroidizing bearing steel with the all tools in general, flank wear and crater wear was increased significantly in the machining of non-heat treated bearing steel.

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1. Huang, Y. L. ve Steven Y. “CBN Tool Wear Modeling in Finish Hard Turning”, 2003 ASME International Mechanical Engineering Congress, Washington, DC., United States, Proceedings of the ASME Manufacturing Engineering Division, 193-200, 2003.
2. Poulachon, G., Bandyopadhyay, B.P., Jawahir, I.S., Pheulpin, S. ve Seguin, E., “Wear Behavior of CBN Tools While Turning Various Hardened Steels”, Wear, Cilt 256, 302–310, 2004.
3. Tönshoff, H.K., Arendt, C. ve Amor, R. B., “Cutting of Hardened Steel”, CIRP Annals, Cilt 49, No 2, 547-566, 2000.
4. Byrne, G., Dornfeld, D. ve Denkena, B., “Advancing Cutting Technology”, CIRP Annals, Cilt 52, No 2, 483-507, 2003.
5. Klocke, F., Brinksmeier, E. ve Weinert, K., “Capability Profile of Hard Cutting and Grinding Processes”, CIRP Annals, Cilt 54, No 2, 557- 580, 2005.
6. Smith, W.F. Structure and Properties of Engineering Alloys, Mc Graw-Hill, NewYork., 1993, Çev.: Dr. Mehmet Erdoğan, Nobel Yayın Dağıtım, Ankara, 2000.
7. Komanduri, R. ve Samanta, S.K., Ceramics, Metals Handbook-Machining-16. Ninth Edition, ASM International, Materials Park, Ohio, 98-104, 1989.
8. Motorcu, A.R., Ç1050, Ç4140 ve Ç52100 Çeliklerinin Farklı Takımlarla İşlenebilirliği ve Modeller Geliştirilmesi, Doktora Tezi, Gazi Üniversitesi, Fen Bilimleri Enstitüsü, 2006.
9. Dawson, T.G. ve Kurfess, T.R., “Machining Hardened Steel with Ceramic-Coated and Uncoated CBN Cutting Tools”, Society of Manufacturing Engineers, Cilt 156, 1-7, 2002.
10. Thiele, J. D. ve Melkote, S.N., “Effect of Cutting Edge Geometry and Work Piece Hardness on Surface Generation in The Finish Hard Turning of AISI52100 Steel”, Journal of Processing Technology, Cilt 94, 216-226, 1999.
11. Benga, G.C. ve Abrao, A.M., “Turning of Hardened 100Cr6 Bearing Steel with Ceramic and PCBN Tools”, Journal of Materials Processing Technology, Cilt 143, 237-241, 2003.
12. Poulachon, G., Bandyopadhyay, B.P., Jawahir, I.S., Pheulpin ve S., Seguin, E., “The Influence of The Microstructure of Hardened Tool Steel Workpiece on The Wear of PCBN Cutting Tools”, International Journal of Machine Tools and Manufacture, Cilt 43, 139-144, 2003.
13. Poulachon, G., Moisan, A. ve Jawahir, I.S., “Tool-Wear Mechanisms in Hard Turning with Polycrystalline Cubic Boron Nitride Tools”, Wear, Cilt 250, 576-586, 2001.
14. Diniz, A.E., Ferreira, J.R. ve Filho, F.T., “Influence of Refrigeration/Lubrication Condition on SAE 52100 Hardened Steel Turning at Several Cutting Speeds”, International Journal of Machine Tools and Manufacture, Cilt 43, 317-326, 2003.
15. Jing Liu, S. ve Richard, C., “On Predicting Softening Effects in Hard Turned Surfaces-Part I: Construction of Material Softening Model”, Journal of Manufacturing Science and Engineering, Transactions of the ASME, Cilt 127, No 3, 476-483, 2005.
16. Pavel, R. ve Marinescu, I. D. “Finite Element Modeling of Chip Formation in Hard Turning Using Marc Mentat”, Transactions of the North American Manufacturing Research Institute of SME, Cilt 32, 375-382, 2004.
17. Huang, Y. L. ve Steven Y. “Modeling of Cutting Forces under Hard Turning Conditions Considering Tool Wear Effect”, Journal of Manufacturing Science and Engineering, Transactions of the ASME, Cilt 127, No 2, 262- 270, 2005.
18. Davies, M.A., Burns, T.J. ve Evans, C.J., “On The Dynamics of Chip Formation in Machining Hard Metals”, CIRP Annals - Manufacturing Technology, Cilt 46, No 1, 25-30, 1997.
19. Zone, C.L. ve Din, Y. C., “A Study of Cutting with A CBN Tool”, Journal of Materials Processing Technology, Cilt 49, No 1-2, 149- 164, 1995.
20. Poulachon, G., Moisan, A. L. ve Jawahir, I.S., “Evaluation of Chip Morphology in Hard Turning Using Constitutive Models and Material Property Data”, American Society of Mechanical Engineers, Manufacturing Engineering Division, MED, Cilt 12, 179-185, 2001.
21. Hunkel, M., Lubben, T., Hoffmann, F. ve Mayr, P., “Simulation of Transformation Behavior of Steels During Quenching”, Progress in Heat Treatment and Surface Engineering, Proceedings of the 5th ASM Heat Treatment and Surface Engineering Conference in Europe, Gthenburg, Sweden, 43-54, 7-9 Haziran 2000.
22. Bartha, B.B., Zawadzki, J., Chandrasekar, S. ve Farris, T.N., “Wear of Hard-turned AISI52100 Steel”, Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, Cilt 36, No 6,1417-1425, 2005.
23. Poulachon, G., Moisan, A. ve Jawahir, I.S., “On Modeling The Influence of Thermo-Mechanical Behavior in Chip Formation During Hard Turning of 100Cr6 Bearing Steel”, CIRP Annals - Manufacturing Technology, Cilt 50, No 1, 31- 36, 2001.
24. Kurt, A., Şeker, U., “The Effect of Chamfer Angle of Polycrystalline Cubic Boron Nitride Cutting Tool on The Cutting Forces and The Tool Stresses in Finishing Hard Turning of AISI 52100 Steel”, Materials and Design, Cilt 26, 351–356, 2005.
25. TS 10329, Torna Kalemleri-Ömür Deneyi, Türk Standartları Enstitüsü, Ankara, 40-44, 1992.
26. Kennametal Hertel, Lathe Tools-Master Catalogue 2001, Kennametal Hertel AG, Fürth, 2001.
27. Seco Tools, Turning-Catalogue and Technical Guide, Seco Tools AB, Fagersta, 36-64, 2002.
28. Ranjit, K.R., A Primer On The Taguchi Method, Competitive Manufacturing Series, Van Nostrand Reinhold, New York, A.B.D., 1990.
29. Miroslav, N., “Turning of Roll Bearing Steel 100Cr6 of Bainite Structure”, 7th International Multidisciplinary Conference, Baia Mare, Romania, 543-548, 17-18 Mayıs, 2007
30. Sahin, Y., “Comparison of Tool Life Between Ceramic and Cubic Boron Nitride (CBN) Cutting Tools when Machining Hardened Steels”, Journal of Materials Processing Technology, In Pres. Corrected Prof., 12 sf, 2008.