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The use of the Taguchi approach to determine the influence of injection-moulding parameters on the properties of green parts

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Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
Purpose: The paper is focused on the influence of injection moulding parameters on the properties of green parts in powder injection moulding. Because of the nature of this technology all the technological phases must be mastered. Design/methodology/approach: For the design of experiments (DOE) we used the Taguchi approach and the results were analysed with the analysis of variance (ANOVA). Findings: As is presented in the paper the injection moulding parameters have big influence on weight and dimensions of the green parts. The mould temperature, material temperature and holding pressure are the parameters which influence the dimensions most. The influence of cycle time has to be examined in further experiments. Research limitations/implications: It would also be advisable to conduct additional research on all the influential factors and their interaction. The factors would appear on three or more levels, which would make it possible to show the non-linear dependence of the output, and to optimize the process itself. Practical implications: The optimisation of injection moulding parameters gives better tolerances of both, the green parts and the sintered parts. Originality/value: Not much research work has been done to examine the influence of injection moulding parameters in PIM. With these experiments we upgraded our existing knowledge about the influence of the injection-moulding parameters on the dimensional accuracy of the green part, made from stainless steel 316L, and thus contributed to improving the process’s reliability.
Rocznik
Strony
63--70
Opis fizyczny
Bibliogr. 19 poz., rys., tab., wykr.
Twórcy
autor
  • Laboratory for Forming, Faculty of Mechanical Engineering, University of Ljubljana, Askerceva 6, 1000 Ljubljana, Slovenia
autor
  • Laboratory for Forming, Faculty of Mechanical Engineering, University of Ljubljana, Askerceva 6, 1000 Ljubljana, Slovenia
  • Metallic Materials and Process Technology, Institute of Metals and Technology, Lepi pot 11, p.p. 431, 1001 Ljubljana, Slovenia
Bibliografia
  • [1] R.K. Roy, Design of Experiments Using the Taguchi Approach; John Willey & Sons, Inc.: New York, 2001.
  • [2] G. Casalino, F. Curcio, F. Memola Capece Minutolo, Investigation on Ti6Al4V laser welding using statistical and Taguchi approaches, Journal of materials processing technology 2005, 167, 422-428.
  • [3] B. Ozcelik, T. Erzurumlu, Comparison of the warpage optimization in the plastic injection molding using ANOVA, neural network model and genetic algorithm, Journal of materials processing technology 2006, 171, 437–445.
  • [4] L.A. Dobrzański, G. Matula. A. Varez, B. Levenfeld, J.M. Torralba, Structure and mechanical properties of HSS HS6-5-2- and HS12-1-5-5-type steel produced by modified powder injection moulding process, Journal of materials processing technology 2004, 157–158, 658–668.
  • [5] J.M. Torralba, L.A. Dobrzański, G. Matula, G. Herranz, A. Varez, B. Levenfeld, Metal injection moulding of HS12-1-5-5 high-speed steel using a PW-HDPE based binder, Journal of materials processing technology 2006, IN-PRESS.
  • [6] G. Matula, L.A. Dobrzański, A. Varez, B. Levenfeld,, J.M. Torralba, Comparison of structure and properties of the HS12-1-5-5 type highspeed steel fabricated using the pressureless forming and PIM methods, Journal of materials processing technology 2005, 162–163, 230–235.
  • [7] L. Castro,.S. Merino, B. Levenfeld, A. Várez, J.M. Torralba, Mechanical properties and pitting corrosion behavior of 316L stainless steel parts obtained by a modified metal injection moulding process, Journal of materials processing technology 2003, 143–144, 397–402.
  • [8] N.H. Loh, R.M. German, Statistical analysis of shrinkage variation for powder injection moulding, Journal of materials processing technology 1996, 59, 278-284.
  • [9] C.H. Ji, N.H. Loh, K.A. Khor, S.B. Tor, Sintering study of 316L stainless steel metal injection moulding parts using Taguchi method: final density, Material science and Engineering 2001, A311, 74-82.
  • [10] Z. Baojun, Q. Xuanhui, T. Ying, Powder injection moulding of WC-8%Co tungsten cemented carbide, Int. Jour. of refractory metals & hard materials 2002, 20, 389-394.
  • [11] R. Zauner, C. Binet, D.F. Heaney, J. Piemme, Variability of feedstock viscosity and its correlation with dimensional variability of green powder injection moulded components, Powder Metallurgy 2004, 47 (2), 151-156.
  • [12] D.F. Heaney, R. Zauner, C. Binet, K. Cowan, J. Piemme, Variability of powder characteristics and their effect on dimensional variability of powder injection moulded components; Powder Metallurgy 2004, 47 (2), 145-150.
  • [13] W.C.J Wei, R.Y. Wu, S.J. Ho, Effects of pressure parameters on alumina made by powder injection moulding, Journal of European Ceramic Society 2000, 20, 1301-1310.
  • [14] P. Postawa, J. Koszkul, Change in injection moulded parts shrinkage and weight as a function of processing conditions, Journal of materials processing technology 2005, 162–163, 109–115.
  • [15] W. J. Tseng, Statistical analysis of process parameters influencing dimensional control in ceramic injection moulding, Journal of Materials Processing Technology 1998, 79, 242-250.
  • [16] D.F. Heaney, C.G. Green, Effect of moulded parameters on final sintered component dimensions, PM2004 World Conference Vienna, Austria, Oct 17-21, 2004; EPMA: Bellstone, Shrewsbury, 2004; 433-438.
  • [17] D.C. Montgomery, Design and Analysis of Experiments, John Wiley & Sons, Inc.: New York, 2000.
  • [18] G.W. Ehrenstein, Polymeric Materials – Structure – Properties – Applications, Hanser Publishers: Munich, 2000.
  • [19] G. Potsch, W. Michaeli, Injection Moulding an Introduction, Hanser Publishers: Munich, 1995.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-fb0b29c8-0ab1-4dd0-aeae-4af87b8e7d13
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