The Impact of Chamotte Sand on the Mechanical and Physical Characteristics of Ceramic Molds Made of Chromite Sand
Abstract
Casting flaws are common in the high-temperature steel casting process, particularly surface flaws and rough surfaces. One option to avoid these surface defects is to use sand with a higher melting point, like chromite sand. This study is an extension of the previous research, which found that chromite sand, a ceramic mold material, frequently fractures during the sintering process. Chamotte sand material of 3% and 5% by weight has been applied as a binder to chromite sand to improve this. With an ideal sintering temperature of 1,050°C, two ceramic sintering processes, the Shaw and the Unicast processes—have been used. To determine the chromite-chamotte sand mixture's potential as a ceramic mold material, tests for cold crushing strength (CCS), modulus of rupture (MoR), permeability, and refractory were conducted. The mixture with 3% wt chamotte sand with the Shaw sintering technique provided the highest results and was appropriate for ceramic mold.
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Nee, A.Y.C., Zarinejad, M. eds. (2015). Handbook of Manufacturing Engineering and Technology. SIMTech – Springer Reference. London. doi: 10.1007/978-1-4471-4670-4.
Muttahar, M.I.Z., Notonegoro, H.A., Frista, G., Soegijono, B., Fachrudin, H.G., Susetyo, F.B., Nazarudin. (2018). Pengaruh Cetakan Pasir Ulang Berpengikat Waterglass Terhadap Permukaan Logam Hasil Pengecoran. Flywheel: Jurnal Teknik Mesin Untirta, IV(1), 39–44.
Chauke, J.L., Nyembwe, K.D., Mojisola, T. (2022). Assessment of South African Chromite Sand for Binder Jetting Application. In MATEC Web of Conferences, 370, 04001. doi:10.1051/matecconf/202237004001.
Kabasele, J.K., Nyembwe, D.K., Ochonogor, O.F. (2020). Evaluation of South African Chromite Sand Sintering Behaviour. In 2020 AFS Proceedings of the 124th Metalcasting Congress. 2020-017: 1-9.
Umam, J.K., Kesuma, I.W.N., Arbintarso, E.S., Waluyo, J., Sidharta. B.W., Khasanah, R. (2024) Pengaruh Proses Shaw dan Unicast Terhadap Sifat Fisis dan Mekanis Cetakan Cor Pasir Kromit. In Prosiding Seminar Nasional Aplikasi Sains & Teknologi (SNAST) 2024. E-ISSN: 2541-528X.
Stachowicz, M., Kamiński, M., Granat, K., Pałyga, L. (May 2016). Effect of Temperature on Chromite-Based Moulding Sands Bonded with Sodium Silicate. Archives of Foundry Engineering, 16(4), 147-152.
Beno, J., Poreba, M., Bajer, T. (2021). Application of Non-Silica Sands for High Quality Castings, Arch. Metall. Mater. Archives of Metallurgy and Materials, 66(1), 25-30. doi: 10.24425/amm.2021.134754
Tshabalala, N.V., Nyembwe, K.D., Van Tonder, P.J.M. (2021). Optimisation of a resin-coated chromite sand for rapid sand casting applications. South African Journal of Industri Engineering, 32 (3), 290-298.
Carey, P.R., Lott. M. (2021). Sand Binder Systems. Düsseldorf: ASK Chemicals. Retrieved from https://www.ask-chemicals.com/fileadmin/user_upload/Download_page/ professional_articles/EN/FMT_Article_part5.pdf
Varfolomeev, M.S., Shcherbakova, G.I. (2018). Refractory Compositions Designed for Highly Heat-Resistant Ceramic Molds in Foundry Practice. Refractories and Industrial Ceramics. 59(3); 290-295. doi: 10.1007/s11148-018-0223-3
Liao, D., Fan, Z., Jiang, W. (2011). Study on the surface roughness of ceramic shells and castings in the ceramic shell casting process based on expandable pattern. Journal of Materials Processing Technology, 211(9), 1465-1470.
Singh, R. (2016). Introduction to Basic Manufacturing Processes and Workshop Technology (Vols. 8122418465, 9788122418460). New Delhi, India: New Age International.
Aminnudin, P. Y. (2020). Effect grain size to mould’s permeability & compressive strength, and casting products. Journal of Physics: Conference Series, 1700 (2020) (012042). doi:10.1088/1742-6596/1700/1/012042
Foseco. (2024). Self-setting resins / No-bake binders for foundries, Foseco, the Foundry Division of Vesuvius plc. Retrieved from Vesuvius: https://www.foseco.com/en/products/ binders-and-moulding-material/no-bake-binders
Sengupta, P. (2020). Classification of Refractories. In: Refractories for the Chemical Industries. Springer, Cham. doi: 10.1007/978-3-030-61240-5_2
Widianto, E., Santosa Aa., Kardiman, Nabinome, V. (2017). Sintesis dan Karakterisasi Sifat Mekanik Cetakan Pasir Pengecoran Berbasis Pasir Recycle dengan Penambahan Resin. Lontar Jurnal Teknik Mesin Undana, 04 (02).
DOI: https://doi.org/10.31284/j.iptek.2025.v29i2.8433
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