Discussion on the Methodology and Apparatus for Hot Distortion Studies

• Autorzy: Ignaszak Z.

Identyfikatory

DOI

10.24425/122517

• Języki publikacji: EN

Abstrakty

EN

The paper refers to earlier publications of the author, on identification of properties of thermomechanical, chemically hardened core/mold sands. In that earlier period, first version of the original DMA apparatus, produced by a Polish company Multiserw-Morek, was used. The Hot Distortion (HD) study results, published by the author in 2008, referred to phenomena accompanying a thermal shock in real conditions of thermal interaction of a liquid alloy on a mold, in reference to a shock possible to obtain in laboratory conditions, without use of liquid alloy as a heat source, with analysis of solutions applied in the DMA apparatus. This paper presents author’s observations on testing a new, innovative version of the LRu-DMA apparatus, containing a module allowing the Hot Distortion (HD) study. Temperature of specimens achieved in the case of the gas burner heating reaches values definitely above 800°C on the heated side and 610°C on the other side. Using an electric radiator, with maximal temperature of 900°C allows obtaining temperatures in between 225-300°C.

Słowa kluczowe

EN

core sand; thermomechanical phenomena; pyrometer camera; thermovision camera

PL

masa rdzeniowa; zjawisko termomechaniczne; kamera termowizyjna

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2018
• Tom: Vol. 18, iss. 2
• Strony: 141--145
• Opis fizyczny: Bibliogr. 22 poz., rys., wykr.

Twórcy

autor

Ignaszak Z.

• Poznan University of Technology, 3 Piotrowo Street, 60-965 Poznan, Poland

Bibliografia

• [1] Ignaszak, Z. (2008). Chosen aspects of thermo-mechanical phenomena in resin bonded sands by use of Hot Distortion tests. Archives of Foundry Engineering. 8(1), 137-142.
• [2] http://Multiserw-Morek.pl /products.
• [3] https://www.magmasoft.com/en/company/partners-and-projects/amap.
• [4] Ignaszak, Z., Popielarski, P., Stręk, T. (2011). Estimation of Coupled Thermo-Physical and Thermo-Mechanical Properties of Porous Thermolabile Ceramic Material using Hot Distortion Plus® Test. Defect and Diffusion Forum (pp.312-315, 764-769).
• [5] Zych, J. & Mocek, J. (2015). Destruction of Moulding Sands with Chemical Binders Caused by the Thermal Radiation of Liquid Metal Volume. Archives of Foundry Engineering. 15(4), 95-100.
• [6] Mocek, J., Zych, J. & Chojecki, A. (2004). Study of erosion phenomena in sand moulds poured with cast iron. International Journal of Cast Metals Research. British Cast Iron Research Association. 17(1), 47-50. ISSN 1364-0461.
• [7] Zych, J., Mocek, J. & Kaznica, N. (2018). Kinetics of Gases Emission from Surface Layers of Sand Moulds. Archives of Foundry Engineering. 18(1), 222-226.
• [8] Izdebska-Szanda, I., Angrecki, M. & Matuszewski, S. (2012). Investigating of the Knocking Out Properties of Moulding Sands with New Inorganic Binders Used for Castings of Non-ferrous Metal Alloys in Comparison with the Previously Used. Archives of Foundry Engineering. 12(spec.2), 117-120.
• [9] Samsonowicz, Z. (1965). Measurements of molding sand permeability at high temperatures. Wrocław: Zeszyty Naukowe Pol. Wrocławskiej, Mechanika IX, Nr 56.
• [10] Ignaszak, Z. (2002). Virtual Prototyping in the Foundry. Databases and Validation. Monograph. Poznań: Edition of Poznan University of Technology. (in Polish).
• [11] Morgan, A.D. & Fasham, E.W. (1975). The BCIRA Hot Distortion Tester for Quality Control in Production of Chemically Bonded Sands. AFS Transactions. 91, 73-80.
• [12] BCIRA Hot distortion tester (1975). Operating instructions.
• [13] Showman, R.E., Harmon, S.B. (2012). Further Evaluations of Anti-Veining Sand Additives. Edition of American Foundry Society.
• [14] Thiel, J., Ziegler, M., Dziekonski, P. & Joyce, S. (2007). Investigation into the Technical Limitations of Silica Sand Due to Thermal Expansion. AFS Transactions. paper 07-145.
• [15] Cheah, S.F., Ramrattan, S.N., Guyer, O.B., Fisher, K.M. (2004). AFS Transactions © American Foundry Society, Des Plaines IL USA, Paper 04-122(04).pdf, pp.2-7.
• [16] Catalog Simpson Technologies – Hot Distortion Tester Model 42114. http://www.simpsongroup.com.
• [17] Catalog Versatile Equipments Private Limited. http://sandtesting.com/product/hot-distortion-tester.
• [18] Data sheet on Deflection Temperature Testing of Plastics. http://www.matweb.com/reference/deflection-temperature.
• [19] Ramrattan, S., Khoshgoftar, A.M., Konkel, M., Muniza J. & Pike A. (2014). Improvements to Disc-Shaped Specimens for Control of PUCB Sand Systems. AFS Transactions. 14-061.
• [20] Derrick, S., Oman, A. & Ramrattan, S. (2012). Casting Trials Measuring Thermo-Mechanical Defects in Various Chemically Bonded Sand Systems. AFS Transactions. 12-107.
• [21] Jakubski, J. & Dobosz, St.M. (2003). Analysis of thermal deformation of masses using a DMA apparatus. Archives of Foundry. 3(9), 246-251.
• [22] Stachowicz, M., Granat, K. and others. (2018). Modified Hot Distortion Test to Investigate the Effect of the Inorganic Binder Kind on the High-Temperature Behaviour of Moulding Sands Hardened by Physical Methods. Archives of Foundry Engineering (in print).

Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).