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Article

Examination of Behavior from Selected Foundry Sands with Alkali Silicate-Based Inorganic Binders

1
Faculty of Materials, Metallurgy and Recycling, Institute of Metallurgy, Technical University of Košice, 042 00 Košice, Slovakia
2
Faculty of Materials Science and Engineering, Institute of Foundry, University of Miskolc, 3515 Miskolc, Hungary
3
Nemak Linz, Zeppelinstrasse 24, 4030 Linz Austria
4
Nemak Slovakia s.r.o., Ladomerská Vieska 394, 965 01 Žiar nad Hronom, Slovakia
*
Author to whom correspondence should be addressed.
Metals 2020, 10(2), 235; https://doi.org/10.3390/met10020235
Received: 7 January 2020 / Revised: 3 February 2020 / Accepted: 5 February 2020 / Published: 10 February 2020
(This article belongs to the Special Issue Modern Trends in Foundry)
The automotive industry is one of the most important customers for the foundry industry. In particular, casting of engine parts for combustion engines is one of the most demanding areas of casting technology. New generation of engine blocks and cylinder heads are getting geometrically more complicated in order to maintain or even increase performance. With the increased complexity, the strain for the casting molds is growing and the widely used technology of core making with standard silica sands is, for several applications, no longer reaching the demanded results. Furthermore, in last decade, there has been an effort in using inorganic binders in core making process, which brings along some additional technological challenges. In order to cope with these challenges, in this paper, silica and non-silica sands with round and angular grains as well as with fine and coarse grains are examined using an inorganic binder for strength, permeability, and thermal stability. The results shall provide useful information about the possibilities of application and combining different types of foundry sands, both silica and non-silica. With their impact on the selected sand core properties, they can help in solving problems in the core making process as well as reaching a high quality of the final product-casting. View Full-Text
Keywords: foundry sand; grain shape; grain size; inorganic binder; sand cores; strength; permeability; thermal stability foundry sand; grain shape; grain size; inorganic binder; sand cores; strength; permeability; thermal stability
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MDPI and ACS Style

Vasková, I.; Varga, L.; Prass, I.; Dargai, V.; Conev, M.; Hrubovčáková, M.; Bartošová, M.; Buľko, B.; Demeter, P. Examination of Behavior from Selected Foundry Sands with Alkali Silicate-Based Inorganic Binders. Metals 2020, 10, 235. https://doi.org/10.3390/met10020235

AMA Style

Vasková I, Varga L, Prass I, Dargai V, Conev M, Hrubovčáková M, Bartošová M, Buľko B, Demeter P. Examination of Behavior from Selected Foundry Sands with Alkali Silicate-Based Inorganic Binders. Metals. 2020; 10(2):235. https://doi.org/10.3390/met10020235

Chicago/Turabian Style

Vasková, Iveta, László Varga, Ingo Prass, Viktoria Dargai, Martin Conev, Martina Hrubovčáková, Marianna Bartošová, Branislav Buľko, and Peter Demeter. 2020. "Examination of Behavior from Selected Foundry Sands with Alkali Silicate-Based Inorganic Binders" Metals 10, no. 2: 235. https://doi.org/10.3390/met10020235

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