Results 11 to 20 of about 4,537 (187)
Ophiolite Chromite Deposits as a New Source for the Production of Refractory Chromite Sands
Sustainability, 2020 Chromite foundry sands, mixed with binding resins, are employed in the industry to form molds for high demanding casting of metals and steel. As there is no substitute, these sands highly contribute to placing chromium at the top value of the economic importance parameter in the EU classification of critical raw materials.
Micol Bussolesi +3 more
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Design and Development of Knowledge Base Scheme for Chromite-based Resin Bonded Sand Core System
Procedia Materials Science, 2014 Abstract An expert system is developed in the present paper to predict the mechanical properties of chromite-based resin bonded sand core system. The various properties of sand cores, such as hardness, compression strength, collapsibility, tensile strength, hot strength, shear strength and permeability depends upon numerous process parameters, viz ...
Surekha, B. +3 more
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An Assessment of South African Chromite Sand Crushing Ratio
International Journal of MetalcastingAbstract Mechanical reclamation is the de facto method of sand recycling in most foundries used to limit sand dumping and adhere to environmental regulations. The latter metal casting imperatives align with the United Nations Sustainable Development Goals of Responsible Production (Goal 12 - Ensure sustainable consumption and production ...
Jonathan Kabadjundi Kabasele +1 more
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Properties of furfuryl alcohol resins for conventional sand moulding and binder jetting applications [PDF]
MATEC Web of Conferences, 2022 This paper compares two commercial acid-cured furfuryl alcohol resins. The first material is used for conventional sand moulding (CSM), while the second material was manufactured for the binder jetting process (BJP) using a Voxeljet VX 1000 printer.
Tshabalala Neo V., Nyembwe Kasongo D.
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OPTIMISATION OF A RESIN-COATED CHROMITE SAND FOR RAPID SAND CASTING APPLICATIONS
South African Journal of Industrial Engineering, 2021 Applications of three-dimensional printing (3DP) to sand casting have been well-established in the last two decades. The preferred raw material is silica (quartz) sand, as it is the most readily available and cost effective sand. However, silica sand as a refractory material has some technical limitations, including high thermal linear expansion, low ...
Neo Tshabalala +2 more
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Application of Non-Silica Sands for High Quality Castings [PDF]
Archives of Metallurgy and Materials, 2020 The goal of this article is to application of non-silica sands based on alumininosilicates as an alternative of traditionally used chromite sand for alloyed steel and iron castings.
J. Beňo, M. Poręba, T. Bajer
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Designing of X46Cr13 Steel Heat Treatment in Condition of Casting Mould [PDF]
Archives of Foundry Engineering, 2023 The paper presents issues related to the technology of layered castings manufactured in the system: working part made of high-chromium steel X46Cr13 - base part made of gray cast iron with flake graphite, using the mould cavity preparation technology ...
N. Przyszlak, G. Piwowarski
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Meta-Transcriptomes From Microcosms From a Cr Impacted Soil Provides Insights Into the Metabolic Response of the Microbial Populations to Acetate Stimulation. [PDF]
Environ Microbiol RepSoil samples from below a COPR waste tip were used to inoculate microcosms which were challenged with Cr(VI). One microcosm was also supplemented with acetate. Microbiology was sampled and bacterial gene expression analysed. Created in BioRender. Baker (2025) https://BioRender.com/j84z498.
Stewart DI +3 more
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SUSTAINABILITY ASSESSMENT OF THERMAL AND MECHANICAL RECLAMATION OF FOUNDRY CHROMITE SAND
South African Journal of Industrial Engineering, 2022 After usage, foundry chromite sand is recycled to reduce production costs and comply with environmental regulations. Thermal and mechanical reclamation are the most prominent methods of sand recycling. The sand reclamation techniques used in the foundry sector are typically not evaluated through the green alternative or environmental sustainability ...
Nyembwe, K.D., Kabasele, J.K.
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High-quality manufacturing method of complicated castings based on multi-material hybrid moulding process [PDF]
China Foundry, 2018 A multi-material hybrid patternless moulding process for complicated castings has been proposed. Moulding sands used in the hybrid moulding process include silica sand, ceramic sand, chromite sand, zircon sand, and steel shot sand.
Li-min Liu, Zhong-de Shan, Feng Liu
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