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Control of microstructure of cast irons Indefinite Chill Double Pour-ICDP

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Języki publikacji
EN
Abstrakty
EN
ICDP cast irons designated for working layer of centrifugal cylinders of rolling mill must have precisely defined properties. The most closely observed parameters of the ICDP (Indefinite Child Double Pour) cast irons are the following: the amount of graphite in a microstructure and hardness of base metal material. Secretion of graphite in cast iron with ledeburitic basic metal compound is a complex process that can be controlled and managed with the use of thermal analysis. On the basis of the evaluation of cooling curve parameters of cast iron there is performed metallurgical adjustment of meltage by adding elements supporting graphite end carbide formation into cast iron. The identified structural and mechanical properties of ICDP cast irons were correlated with recorded KO. Subsequently, a methodology for control of the metallurgical adjustment of cast iron before casting was proposed so as to ensure the desired microstructure and properties the ICDP cast iron.
Rocznik
Strony
199--203
Opis fizyczny
Bibliogr. 14 poz., rys., tab., wykr.
Twórcy
autor
autor
  • VSB - Technical University of Ostrava, 17. listopadu 15, CZ 708 33 Ostrava-Poruba, Department of Foundry Engineering, FMMI, jiri.hampl@vsb.cz
Bibliografia
  • [1] K. H. Caspers, Giesserei - Praxis. Nr. 7, 1998, s. 273-282 (In Germany).
  • [2] E. Schürmann, Grundlagen zur kritischen interpretation von Abkühlungskurven der thermischen Analyse. Giessrei-Forschung 44, 1992, Heft 1, s. 8-12 (In Germany).
  • [3] B.Marinček, New aims and ways in the production of castings from graphitic cast iron, Giesserei-Praxis, č. 15/16, 1990, s. 258 .(In Germany).
  • [4] D. M. Stefanescou , Solidification of flake, compacted /vermicular and spheroidal graphite cast irons as revaled by thermal analysis and directional solidification experiments. In. The Physical metalurgy of Cast Iron. Proc. 3rd. International Symposium on the physical Metallurgy of Cast Iron. Stockholm, 1985, s. 151-162.(In Sverige).
  • [5] B. Marinček, Extension of thermal analysis for ensuring of quality of gray solidifying melt. Giesserei, č. 15, 1984, s. 588.(In Germany).
  • [6] E. Guhl, , Quality control and stability of the molten iron by using thermal analysis software. Giessereitechnik 36, č. 16, 1990, s. 394(In Germany).
  • [7] J. Hampl, Prediction of metallurgical quality of cast iron with spheroidal graphite. Solidification of metals and alloys. No 26, PAN Katowice, Rzeszow, 1996, ISSN 0208-9386, ISBN 84-04-02019-X, s. 205-209, (In Polish).
  • [8] J. Hampl, L. Bechný, A. Sládek, R. Řezníček,. Using of thermal analysis for determination of the metallurgical quality of the castings. Slévárenství č. 8-9, 1997, s. 331-334.(In Czech).
  • [9] J. Hampl, L. Bechný, A. Sládek, R. Řezníček, Determination of metallurgical quality of graphite cast irons. Solidification of metals and alloys. No 32, PAN-ODDZIAŁ, Katowice, 1997, ISSN 0208-9386, ISBN 84-04-02019-X, s. 205-211, (In Polish).
  • [10] J. Hampl, V. Vondrák, T. Válek, Changes in the cubic content of cast iron with lamellar graphite as a function of parameters of cooling curve. Sborník mezinárodní konference SPOLUPRÁCE 2002, s. 107-113, (In Czech).
  • [11] J. Hampl, V. Vondrák, T. Válek, Using thermal analysis for calculation of the volume changes of cast iron. In Materiálové inžinierstvo, roč. X, č. 3, 2003, s. 99-102. ISSN 1335-0803. (In Slovak).
  • [12] J. Hampl, V. Vondrák, T. Válek, Cubic content shrinkage of cast irons between molding temperature and solidification temperature. Slévárenství LI, č. 3-5, 2003, s. 186-189. (In Czech).
  • [13] V. Vondrák, J. Hampl, T. Válek, The Influence of cubic content changes on the size of the riser graphitic cast irons., Slévárenství, č. 7, 2003, s. 259 .(In Czech).
  • [14] M. Příhoda, J. Bažan, J. Dobrovská, J. Drápala, J. Hampl, L. Hyspecká, Z. Jančíková, Z. Jonšta, Z. Klečková, New materials prepared by crystallization processes. Monograph, VŠB-TU Ostrava, 2005, s. 55-68. (In Czech).
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BPZ7-0004-0037
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