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New approach for applications of machinability and machining strength

Wybrane pełne teksty z tego czasopisma
Identyfikatory
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
Purpose: The purpose of this paper is to present and discuss the machinability and machining strength concepts under a new viewpoint concerned with both their applications and how to measure then. Despite of the fact that to develop easy to cut steel is a very important task, this work take under consideration entire application of these properties for any kind of materials in terms of how aggressive it can be against the tool material. Design/methodology/approach: A new approach to measure machining strength property is proposed. The reliability of the proposed test was based on experimental data from the literature. The best way to apply machinability index and machining strength index is put forward. Otherwise, at this moment, the authors are doing experimental laboratory research to evaluate the best way to organize appropriate samples to attend different kind products for respective materials makers'. Findings: It was possible to conclude that machinability must be used by means of comparative tests as close as possible to shopping floor conditions. The main application is to select the best steel to be used for a specific cutting process workpart. Research limitations/implications: The main limitation is that the entire new viewpoint presented is very new for the materials makers. The authors must spread the ideas presented here to check the actual materials makers' resistance or acceptance of their applications. Originality/value: The proposed test is very simple and more reliable than that one already published. On the other hand, machining strength is a material intrinsic property. For this reason, it is best employed during easy to cut materials development and measured by a Coppini Index (CI) based on standard tests. As a material intrinsic property it is not related to a standard material. Machinability is supposed to be appropriated for process optimization and not for materials development or characterization.
Rocznik
Strony
21--28
Opis fizyczny
Bibliogr. 21 poz.
Twórcy
autor
autor
  • Universidade Nove de Julho, Av. Francisco Matarazzo, 612, Água Branca, Sao Paulo, S.P., 05001-100, Brazil, ncoppini@uninove.br
Bibliografia
  • [1] N.L. Coppini, J.P.B. Destro, Machining Strength- A Contribution to the Characterization of Materials, Proeedings of the 48th Annual Congress of ABM, 1993, Rio de Janeiro, RJ, 1993, 341-342, (in Portuguese)
  • [2] J.P.B. Destro, Machining Strength of Materials - Concept, Measurement, and Applications of a New Property, Doctoral Thesis, Universidade Estadual de Campinas, Faculdade de Engenharia Mecânica, 1995, (in Portuguese)
  • [3] N.L. Coppini, J.P.B. Destro, Parameter Analysis to Accomplish a Reliable Method to Characterize Intrinsic Material Machining Strength, Proceedings of the International Conference on Advances in Materials & Processing Technologies AMPT´95, Dublin, EIRE, 1995, 373-380
  • [4] A.E. Diniz, F.C. Marcondes, N.L. Coppini, Technology of Machining of Materials, São Paulo, Artiliber Editora, 2006, 147-161, (in Portuguese)
  • [5] R.T. Coelho, M.F, Pimentel, L.R.M. Valle and E. Duarte, Comparison of Machinability between easy to cut steels with addition of lead (11smNpB37) and different levels of metallicresidues, Annals from Machining 2008, Expo Center Norte, São Paulo, 1-21 2008, (media), (in Portuguese)
  • [6] J.H. Bagetti, L. Boehs, W.L. Guesser, C. Doré. Analysis of the Machinability of Grey and Vermicular Cast Irons in Frontal Milling Process. Annals from the V National Congress of Mechanical Engineering, Salvador, BA, 1- 10, 2008, (media), (in Portuguese)
  • [7] H.Z. Li. H. Zeng. and X.Q. Xen, An experimental study of tool wear and cutting force variation in the end milling, Journal of Materials Processing Technology 180 (2006) 296-304
  • [8] P.J. Arrazola, A. Garay, L.-M. Iriarte, M. Armendia, S. Marya and F. Le Maître. Machinability of titanium alloys (Ti6Al4V and Ti555.3), Journal of Materials Processing Technology 209/ 5 (2009) 2223-2230.
  • [9] S. Thamizhmanii, S. Saparudin, S. Hasan, Analyses of surface roughness by turning process using Taguchi method, Journal of Achievements in Materials and Manufacturing Engineering 20 (2007) 120-125.
  • [10] M.I. Hossain, A.K.M. Nurul Amin, A.U. Patwari and A. Karim, Enhancement of machinability by workpiece preheating in end milling of Ti-6Al-4V, Journal of Achievements in Materials and Manufacturing Engineering 31/2 (2008) 30-34.
  • [11] A.M.A. Al-Ahmari, Predictive machinability models for a selected hard material in turning operations, Journal of Materials Processing Technology 190 (2007) 305-311.
  • [12] B. Y. Lee, Y. S. Tarng, Cutting-parameter selection for maximizing production rate or minimizing production cost in multistage turning operations, Journal of Materials Processing Technology 105/1 (2000) 61-66.
  • [13] Q. Meng, J. A. Arsecularantne, P. Mathew, Calculation of optimum cutting conditions for turning operations using a machining theory, International Journal of Machine Tools and Manufacture: Design, Research and Application 40/12 (2000) 1709-1733.
  • [14] M. Tolouei-Rad, Intelligent selection of cutting conditions in turning, milling and drillingm, International Conference on Production Research, Prague, 2001, (Published in CD)
  • [15] D. Shabtay, M. Kaspi, Optimization of the machining economics problem under the failure replacement strategy, International Journal of Production Economics 80/3 (2002) 213-230.
  • [16] E.A. Baptista, Development of a Specialist System to a Machining Process Optimization based on the Web, Doctoral Thesis, Faculty de Mechanical Engineering of UNICAMP, Campinas, 2004, (in Portuguese).
  • [17] N.L. Coppini, E.A. Baptista, M. Vieira Jr., Optimization of Machining Processes. II Assembléia Geral do Instituto Fábrica do Milênio, Campinas, SP, 102-103, 2008, (in Portuguese).
  • [18] T. Corbett, Throughput accounting, Great Barrington: North River Press, 2005.
  • [19] E. M. Goldratt, What is thing called the Theory of Constraints, and how should it be implemented, Croton-on-Hudson: North River Press, 1990.
  • [20] E. M. Goldratt, The Haystack Syndrome: sifting information in the data ocean. Great Barrington: North River Press, 1991.
  • [21] H. Matsumoto, A.R. Rodrigues, D.I. Suyama, C.L.F. de Assis, A.Y. Rigatti, J.E.A. Pereira, Tests of Machinability for Long and Short Duration Periods of time performed in Steels AISI 630 with and without addition of calcium, Annals from the V National Congress of Mechanical Engineering, Salvador, BA, 1 -10, 2008, (media), (in Portuguese).
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BSL8-0030-0003
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