Effect of the Composition of Hybrid Sands on the Change in Thermal Expansion

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F29142890%3A_____%2F22%3A00043470" target="_blank" >RIV/29142890:_____/22:00043470 - isvavai.cz</a>
Alternative codes found
RIV/61989100:27360/22:10250458
Result on the web
<a href="https://www.mdpi.com/1996-1944/15/17/6180" target="_blank" >https://www.mdpi.com/1996-1944/15/17/6180</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3390/ma15176180" target="_blank" >10.3390/ma15176180</a>

Result language
angličtina
Original language name
Effect of the Composition of Hybrid Sands on the Change in Thermal Expansion
Original language description
In the foundry industry, silica sands are the most commonly used type of sands for the production of sand foundry moulds using various types of binders. Their greatest disadvantage is their significant volume changes at elevated temperatures, which are associated with the formation of many foundry defects from stress, such as veining, and thus have a direct influence on the final quality of the casting. In the case of non-silica sands and synthetic sands, the volume stability is more pronounced, but this is accompanied by a higher purchase price. Therefore, a combination of silica sand and synthetic sand CERABEADS is considered in order to influence and reduce the thermal expansion. The hybrid mixtures of sands, and their most suitable ratios, were evaluated in detail using sieve analysis, log W and cumulative curve of granularity. It was found that the addition of 50% CERABEADS achieves a 32.2% reduction in dilatation but may increase the risk of higher stresses. The measurements showed a significant effect of the granulometric composition of the sand on the resulting thermal expansion, where the choice of grain size and sorting can achieve a significant reduction in dilatation with a small addition of CERABEADS. © 2022 by the authors.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
20500 - Materials engineering

Project
<a href="/en/project/EF17_049%2F0008399" target="_blank" >EF17_049/0008399: Development of inter-sector cooperation of RMSTC with the application sphere in the field of advanced research and innovations of classical metal materials and technologies using modelling methods</a><br>
Continuities
N - Vyzkumna aktivita podporovana z neverejnych zdroju

Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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