Validation Tests of Prediction Modules of Shrinkage Defects in Cast Iron Sample

• Autorzy: Hajkowski J. , Roquet P. , Khamashta M. , Codina E. , Ignaszak Z.

Identyfikatory

DOI

10.1515/afe-2017-0011

• Języki publikacji: EN

Abstrakty

EN

The paper presents the results of experimental-simulation tests of expansion-shrinkage phenomena occurring in cast iron castings. The tests were based on the standard test for inspecting the tendency of steel-carbon alloys to create compacted discontinuities of the pipe shrinkage type. The cast alloy was a high-silicone ductile iron of GJS - 600 - 10 grade. The validation regarding correctness of prognoses of the shrinkage defects was applied mostly to the simulation code (system) NovaFlow & Solid CV (NFS CV). The obtained results were referred to the results obtained using the Procast system (macro- and micromodel). The analysis of sensitivity of the modules responsible for predicting the shrinkage discontinuities on selected pre-processing parameters was performed, focusing mostly on critical fractions concerning the feeding flows (mass and capillary) and variation of initial temperature of the alloy in the mould and heat transfer coefficient (HTC) on the casting - chill interface.

Słowa kluczowe

EN

castings defects; shrinkage; porosity; ductile cast iron; validation

PL

wady odlewów; porowatość; żeliwo sferoidalne

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2017
• Tom: Vol. 17, iss. 1
• Strony: 57--66
• Opis fizyczny: Bibliogr. 15 poz., il., rys., tab., wykr.

Twórcy

autor

Hajkowski J.

• Division of Foundry, Poznan University of Technology, Piotrowo 3, 61-138 Poznań, Poland

autor

Roquet P.

• Fundiciones de Roda

autor

Khamashta M.

• Polytechnic University of Catalonia

autor

Codina E.

• Polytechnic University of Catalonia

autor

Ignaszak Z.

• Division of Foundry, Poznan University of Technology, Piotrowo 3, 61-138 Poznań, Poland

Bibliografia

• [1] Campbell, J. (2015). Complete Casting Handbook. Butterworth-Heinemann.
• [2] Ignaszak, Z., Codina, E., Hajkowski, J., Popielarski, P. & Roquet P. (2014). Selected aspects of the use of thermal & derivative analysis to improve macro modeling of solidification for casting iron. Comparison of chosen simulation codes, 10th International Symposium on the Science and Processing of Cast Iron – SPCI10.
• [3] Burbelko, A.A. & et.all. (2013). Cellular Automaton Modeling of Ductile Iron Density Changes at the Solidification Time. Archives of Foundry Engineering. 13(4), 9-14. DOI: 10.2478/afe-2013-0074.
• [4] Perzyk, M. & et.all. (2014). Selected Principles of Feeding Systems Design: Simulation vs Industrial Experience. Archives of Foundry Engineering. 14(4), 77-82. DOI: 10.2478/afe-2014-0090.
• [5] Perzyk, M. & et.all. (2015). Optimization of Side Feeders Systems by Means of Simulation of Solidification. Archives of Foundry Engineering. 15(1), 69-74. DOI: 10.1515/afe-2015-0012.
• [6] Polish standard, BN-80/4051-11, Badania technologiczne staliwa - Próba skłonności do tworzenia jamy skurczowej i rzadzizny.
• [7] Ed. Sakwa W. 1986. Foundryman Handbook, Volume 1. (in Polish).
• [8] Ed. Sobczak, J. (2013). Modern Foundry, Foundryman Handbook. Volume 1 Materials. G.Tęcza. Foundry Properties of cast steel. Chapter II.8. (in Polish).
• [9] Gawroński, J. & Mazur, A. (1995). Investigation at possibility designation of cast iron tendencies to formation of refract ional caverns with ATD help. Solidification of Metals and Alloys. 22, 146-153 (in Polish).
• [10] User's Manual, NovaFlow&Solid ver. 4.7, Novacast, 2014.
• [11] User's Manual, NovaFlow&Solid ver. 6.0, Novacast, 2016.
• [12] User's Manual, ProCAST 2013.0, ESI Group, 2013.
• [13] Hajkowski, M., Bernat, L. & Hajkowski, J. (2012). Mechanical Properties of Al-Si-Mg Alloy Castings as a Function of Structure Refinement and Porosity Fraction. Archives of Foundry Engineering. 12(4), 57-64. DOI: 10.2478/v10266-012-0107-9.
• [14] Ignaszak, Z. & et.all. (2015). Susceptibility of cast iron shrinkage discontinuities formation. FLEXICAST Report. 7FP-2012-7-NMP-ICT-FoF-314540.
• [15] Ignaszak, Z. (2000). Identification of Chill Effect on The Steel Casting Solidification. Solidification of Metals and Alloys. 44(2), 137-142.

Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).