Influence of Surwaybest Starch-Based Additive on the Surface Quality of Cast Iron Castings
Though additives developed for foundries are widely used across the globe, their direct effects remain unclear, and the mechanisms of their action within core and moulding mixtures have not yet been precisely described. When utilizing these new additives, it is expected that they will enable the pro...
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| Format: | Article |
| Language: | English |
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Polish Academy of Sciences
2025-04-01
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| Series: | Archives of Foundry Engineering |
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| Online Access: | https://journals.pan.pl/Content/134822/AFE%202_2025_03-Final.pdf |
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| author | M. Hrubovčáková B. Buľko P. Demeter S. Hubatka L. Fogaraš J. Demeter D. Dubec P. Šmigura |
| author_facet | M. Hrubovčáková B. Buľko P. Demeter S. Hubatka L. Fogaraš J. Demeter D. Dubec P. Šmigura |
| author_sort | M. Hrubovčáková |
| collection | DOAJ |
| description | Though additives developed for foundries are widely used across the globe, their direct effects remain unclear, and the mechanisms of their action within core and moulding mixtures have not yet been precisely described. When utilizing these new additives, it is expected that they will enable the production of castings free from external defects, such as veining or surface flaws. The newly formulated additive, Surwaybest, is composed of iron oxides - specifically magnetite - which promotes cooling through an endothermic reaction while simultaneously generating FeO. The presence of FeO in the core mixture, alongside SiO2, supports the formation of a fayalite layer around the base sand grains, reducing subsurface tension within the mould or core. Surwaybest also contains an insoluble polysaccharide that burns off when the core is cast into the mould, creating space for the quartz base sand to expand. Additionally, it includes carbon, which undergoes dehydrogenation from the molten metal's heat while softening, filling the intergranular spaces, and coating individual grains |
| format | Article |
| id | doaj-art-88d4f7e8422641eb96c058ca8b7cfea7 |
| institution | Kabale University |
| issn | 2299-2944 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | Polish Academy of Sciences |
| record_format | Article |
| series | Archives of Foundry Engineering |
| spelling | doaj-art-88d4f7e8422641eb96c058ca8b7cfea72025-08-20T03:26:43ZengPolish Academy of SciencesArchives of Foundry Engineering2299-29442025-04-01vol. 25No 22634https://doi.org/10.24425/afe.2025.153790Influence of Surwaybest Starch-Based Additive on the Surface Quality of Cast Iron CastingsM. Hrubovčáková0https://orcid.org/0000-0003-3499-4560B. Buľko1https://orcid.org/0000-0002-3507-8954P. Demeter2https://orcid.org/0000-0003-4387-7892S. Hubatka3https://orcid.org/0000-0002-7872-1305L. Fogaraš4https://orcid.org/0000-0003-4793-9181J. Demeter5https://orcid.org/0009-0009-5742-6962D. Dubec6https://orcid.org/0009-0000-1185-0922P. Šmigura7https://orcid.org/0009-0004-6557-9903University of Košice, Faculty of Materials, Metallurgy and Recycling, Košice, Slovak RepublicBBB Consulting s.r.o., Mosadzná 389/8, 040 17 Košice-Barca, ID: 56 535 350, Slovak RepulicTechnical University of Košice, Faculty of Materials, Metallurgy and Recycling, Košice, Slovak RepublicTechnical University of Košice, Faculty of Materials, Metallurgy and Recycling, Košice, Slovak RepublicTechnical University of Košice, Faculty of Materials, Metallurgy and Recycling, Košice, Slovak RepublicTechnical University of Košice, Faculty of Materials, Metallurgy and Recycling, Košice, Slovak RepublicTechnical University of Košice, Faculty of Materials, Metallurgy and Recycling, Košice, Slovak RepublicTechnical University of Košice, Faculty of Materials, Metallurgy and Recycling, Košice, Slovak RepublicThough additives developed for foundries are widely used across the globe, their direct effects remain unclear, and the mechanisms of their action within core and moulding mixtures have not yet been precisely described. When utilizing these new additives, it is expected that they will enable the production of castings free from external defects, such as veining or surface flaws. The newly formulated additive, Surwaybest, is composed of iron oxides - specifically magnetite - which promotes cooling through an endothermic reaction while simultaneously generating FeO. The presence of FeO in the core mixture, alongside SiO2, supports the formation of a fayalite layer around the base sand grains, reducing subsurface tension within the mould or core. Surwaybest also contains an insoluble polysaccharide that burns off when the core is cast into the mould, creating space for the quartz base sand to expand. Additionally, it includes carbon, which undergoes dehydrogenation from the molten metal's heat while softening, filling the intergranular spaces, and coating individual grainshttps://journals.pan.pl/Content/134822/AFE%202_2025_03-Final.pdfadditivestarchquality of castings |
| spellingShingle | M. Hrubovčáková B. Buľko P. Demeter S. Hubatka L. Fogaraš J. Demeter D. Dubec P. Šmigura Influence of Surwaybest Starch-Based Additive on the Surface Quality of Cast Iron Castings Archives of Foundry Engineering additive starch quality of castings |
| title | Influence of Surwaybest Starch-Based Additive on the Surface Quality of Cast Iron Castings |
| title_full | Influence of Surwaybest Starch-Based Additive on the Surface Quality of Cast Iron Castings |
| title_fullStr | Influence of Surwaybest Starch-Based Additive on the Surface Quality of Cast Iron Castings |
| title_full_unstemmed | Influence of Surwaybest Starch-Based Additive on the Surface Quality of Cast Iron Castings |
| title_short | Influence of Surwaybest Starch-Based Additive on the Surface Quality of Cast Iron Castings |
| title_sort | influence of surwaybest starch based additive on the surface quality of cast iron castings |
| topic | additive starch quality of castings |
| url | https://journals.pan.pl/Content/134822/AFE%202_2025_03-Final.pdf |
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