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Evaluation of possibilities for leaded brasses replacement

Wybrane pełne teksty z tego czasopisma
Identyfikatory
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
Purpose: Leaded brasses are most commonly used Cu alloys, especially for home fixture. High toxicity of lead to human caused tendency to eliminate lead additions from these alloys. In this work a discussion of solutions to this problem is shown and possibilities of leaded brasses replacement with multi-component non-leaded brasses. Design/methodology/approach: In this work general properties of multi-component brasses are investigated (mechanical, technological and operating properties) as well as its structure and their correlation with chemical composition. Some interactions of additions are shown with physical and mathematical model of its influence on properties. Findings: It was found that in a complex of additions (closed system) the interactions can be described by physical model and mathematical equations showing properties in function of chemical composition can be used to optimize chemical composition for engineering alloys with known properties. Research limitations/implications: However introducing new elements to the system (chemical composition) will disturb the created models (physical and mathematical). It must be said that for investigated alloys optimal properties can be ensured using presented models. Practical implications: Presented approach enables optimization of alloy properties for particular application. Properties can be introduced to the mathematical model which with use of optimization methods will return needed chemical composition. Originality/value: Alloys engineered with use of presented approach have properties close to leaded brass with low increase in total production costs.
Rocznik
Strony
81--84
Opis fizyczny
Bibliogr. 18 poz., rys., wykr.
Twórcy
autor
  • Division of Foundry, Institute of Engineering Materials and Biomaterials, Silesian University of Technology, ul. Towarowa 7, 44-100 Gliwice, Poland
  • Division of Foundry, Institute of Engineering Materials and Biomaterials, Silesian University of Technology, ul. Towarowa 7, 44-100 Gliwice, Poland
autor
  • Division of Foundry, Institute of Engineering Materials and Biomaterials, Silesian University of Technology, ul. Towarowa 7, 44-100 Gliwice, Poland
Bibliografia
  • [1] M. Kondracki, J. Gawroński, J. Szajnar, The alloy additions influence on technological properties of fixture brasses, AMME, Gliwice-Zakopane 2003, p. 485-490
  • [2] A. Janus, B. Ankudowicz, Possibility of lead elimination from CuZn39Pb2 brass, Solidification of Metal and Alloys, vol. 43, PAN Katowice 2000, p. 291-298 (in polish)
  • [3] J. Pacałowski, M. Tałach-Dumańska, A. Spodaryk, Multi-component nonleaded brass with good machinability and wear resistance, Solidification of Metal and Alloys, vol. 24, PAN Katowice 1995, p. 89-94 (in polish)
  • [4] Kondracki M., Gawroński, J. Szajnar J., Role of the intermetallic phases in technological process of fixture brasses, Elsevier Journal o Materials Processing Technology, vol. 162-163, 2005, p. 332-335
  • [5] M. Kondracki, J. Gawroński, J. Szajnar, Forecasting of cast CuZn alloy structure based on TDA method, International Conference on Nonferrous Metal Casting Science – Technology, Wysowa 2005, p. 53-58 (in polish)
  • [6] S. Kuyucak, M. Sahoo, A review of the machinability of copper-base alloys, Canadian Metallurgical Quarterly, vol. 35, nr 1, 1996, p. 1-15
  • [7] M. Kondracki, J. Gawroński, J. Szajnar, G. Dyrbuś, Technological properties of non-leaded fixture brasses, Archives of Foundry, vol. 9, PAN Katowice 2003, p. 287-292 (in polish)
  • [8] M. Kondracki, J. Gawroński, J. Szajnar: Identification of some structural components in cast CuZn alloys, Archives of Foundry, PAN Katowice, vol. 15, 2005, p. 204-209 (in polish)
  • [9] M. Kondracki, J. Gawroński, J. Szajnar, Hard inclusions in fixture brasses, AMME, Wisła 2005, p. 319-322
  • [10] M. Kondracki, J. Gawroński, J. Szajnar, Intermetallic phases influence on solidification process of fixture brasses, AMME, Wisła 2005, p. 323-326
  • [11] M. Sadayappan, J.P. Thomson, M. Sahoo, Grain refinement of permanent mold cast copper base alloys, World Foundry Congress, Istambul 2002, p. 1401-1411
  • [12] M. Kondracki, J. Szajnar, Improvement of modification process of some copper alloys, Slevarenstvi 9/2004, Brno 2004, p. 364-366
  • [13] T. Umeda et al., Development of lead free copper alloy castings, mechanical properties, castability and machinability, World Foundry Congress, Istambul 2002, p. 1431-1342
  • [14] L.A. Dobrzański, W. Kasprzak, J.H. Sokolowski, R. Maniara, M. Krupiński, Application of the derivation analysis for assessment of the ACAlSi7Cu alloy crystallization process cooled with different cooling rate, AMME, Wisła 2005, p. 147-150
  • [15] E. Majchrzak, J. Mendakiewicz, A. Piasecka-Belkhayat, Algorithm of mould thermal parameters identification in the system casting – mould – environment, AMME, Wisła 2005, p. 411-414
  • [16] M. Kondracki, J. Gawroński, J. Szajnar, Chemical composition influence on machinability of non – leaded brasses, Archives of Foundry, vol.17, PAN Katowice 2006 in print (in polish)
  • [17] M. Kondracki, J. Gawroński, J. Szajnar, R. Grzelczak, K. Podsiadło, Investigation on crystallization process of fixture leaded brasses with use of TDA method, Archives of Foundry, vol. 4, PAN Katowice 2002, p. 128-134 (in polish)
  • [18] M. Miernik, Metals machinability. Investigation and forecasting methods, Wyd. Pol. Wroc., Wrocław 2000 (in polish)
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-da65b270-6ce7-4a8e-9702-ec07243502ff
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