THE INFLUENCE OF MATERIAL MICROSTRUCTURE ON THE CHIP FORMING PROCESS
DOI:
https://doi.org/10.7251/COMEN1401069KAbstract
For a number of alloys the process of metal cutting is accompanied by extensive plastic deformation and fracture. In the paper we investigate quick stop samples of the chip formation of materials with different chemical composition and microstructure. The type of chip formation is classified according to the mechanism of crack formation and propagation. During cutting, most samples that are used, quasi-continuous chips with built-up edge (BUE) are obtained. The formation of BUE is undesirable since it is a highly deformed body with a semi stable top which periodically breaks away giving rise to poor workpiece surface quality.
References
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[11] B. Savković, P. Kovač, M. Gostimirović, M. Sekulić, D. Rajnović, Experimental Studies of Nodular Cast Iron Alloys During Milling, Journal of Production Engineering, Vol.131 (2010) 1518.
[2] K. Vasilko, Analytická teória trieskového obrábania, Prešov, 2012, 539 s.
[3] M. E. Merchant, H. Ernest, Chip Formation, Friction and Finish, The Cincinnati Machine Co., Cincinnati, Ohio, 1954, 4.
[4] M. Kronenberg, Machining Sciences and Application, Mechanic of Metal Cutting, Pergamon Press, Oxford, 1966, 345.
[5] N. N. Zorev, Metal Cutting Mechanics, Pergamon Press, Oxford, 1996, 245256.
[6] P. Kovač, L. Sidjanin, D. Rajnović, B. Savković, J. Wannasin, The microstructure influence on the chip formation process of Al-Cu alloy cast conventionally and in semi solid state, Metalurgija, Vol 511 (2012) 3438.
[7] L. Sidjanin, P. Kovač, Fracture mechanisms in chip formation processes, Materials Science and Technology, Vol. 13 (1997) 439444.
[8] P. Kovač, L. Šidjanin, Investigation of chip forming process during aluminum machining, 9th International Scientific Conference on Flexible Technologies, Faculty of Technical Sciences, Novi Sad 2006, 1516.
[9] K. Vasilko, A. Macurová, Two local extremes of cutting speed, Manufacturing Technology, Vol. 1212 (2012) 8689
[10] P. Kovač, L. Šidjanin, The Chip Root Deformation of Difficult to Machine Materials, 11th International Research/Expert Conference „Trends in the Development of Machinery and Associated Technology” TMT 2007, Hammamet, Tunisia, 05−09 September, 2007, 59-62.
[11] B. Savković, P. Kovač, M. Gostimirović, M. Sekulić, D. Rajnović, Experimental Studies of Nodular Cast Iron Alloys During Milling, Journal of Production Engineering, Vol.131 (2010) 1518.
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2014-09-24
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