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Investigation of Tool Temperature and Surface Quality in Hot Machining of Hard-to-Cut Materials

Authors: M.Davami, M.Zadshakoyan


Production of hard-to-cut materials with uncoated carbide cutting tools in turning, not only cause tool life reduction but also, impairs the product surface roughness. In this paper, influence of hot machining method were studied and presented in two cases. Case1-Workpiece surface roughness quality with constant cutting parameter and 300 ºC initial workpiece surface temperature. Case 2- Tool temperature variation when cutting with two speeds 78.5 (m/min) and 51 (m/min). The workpiece material and tool used in this study were AISI 1060 steel (45HRC) and uncoated carbide TNNM 120408-SP10(SANDVIK Coromant) respectively. A gas flam heating source was used to preheating of the workpiece surface up to 300 ºC, causing reduction of yield stress about 15%. Results obtained experimentally, show that the method used can considerably improved surface quality of the workpiece.

Keywords: Hard-to-cut material, Hot machining, Surfaceroughness, Tool Temperature

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[1] Ozler, L., Inan, A., Ozel, C., 2000. Theoretical and experimental determination of tool life in hot machining of austenitic manganese steel. Int. J. Mach. Tool & Manuf. 41,163-172.
[2] E.O. Ezugwa, 2005, Improvement in the machining of difficult aerospace super alloy, Int. J. Mach. Tool& Manuf.45,1353-1367.
[3] Outinen J., Mechanical properties of structural steels at elevated temperatures and after cooling down, Fire and Materials Conference, San Francisco, USA, Proceedings, Interscience Communications Limited, UK, 2006.
[4] R.J.Karbacher,M.E.Merchant,1951, Basic factors in Hot-machining of metals, Transactions ASME73,761-776.
[5] J.R.Macy, 1952, US PATENT, Heating device for hot machining apparatus.
[6] Z.Y.Wang ,K.P. Pajurkar,J.Fan,S.lei, Y.C.Shin, G.Perfrescu, 2003,Hybrid machining of Inconel 718, Int. J. of Mach. Tools& Manuf.43 ,1391-1396.
[7] N.Tosun,L.Ozler,2002,A study of tool life in hot-machining using artificial neural networks and regression analysis method,J. Material processing technology 124,99-104.
[8] N. Tosun ,L. Ozler, 2004, Optimization for hot turning operations with multiple Performance characteristics, Int J Adv Manuf Technol 23, 777- 782.
[9] K.P. Maity, P.K. Swain, An experimental investigation of hotmachining to predict tool life, Int. J. of Materials processing technology 1 9 8 (2008) 344-349.