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The effect of different binder levels on the heat absorption capacity of moulding mixtures made by the phenolic urethane cold-box process
Jönköping University, School of Engineering, JTH, Materials and Manufacturing.ORCID iD: 0000-0002-3644-213X
Jönköping University, School of Engineering, JTH, Materials and Manufacturing.ORCID iD: 0000-0002-3024-9005
Jönköping University, School of Engineering, JTH, Materials and Manufacturing.
Department of Metallurgy, School of Engineering, University of Miskolc, Miskolc, Hungary.
2017 (English)In: Journal of thermal analysis and calorimetry (Print), ISSN 1388-6150, E-ISSN 1588-2926, Vol. 130, no 3, p. 1769-1777Article in journal (Refereed) Published
Abstract [en]

The phenolic urethane cold-box (PUCB) process was first introduced to the foundry industry in the late 1960s. Since then, it has become one of the most popular methods to make foundry purpose sand moulds and cores, utilized in the manufacturing of aluminium and cast iron cast components. The factors to be considered, affecting the general performance of a PUCB moulding mixture, are the temperature of sand, the moisture content, the mixing conditions, etc. Moreover, there are variable production parameters such as binder level, to improve certain properties of the mould and/or the core based on their specific area of application. These are mainly mechanical properties such as tensile or splitting strength. They have significant influences on the behaviour of the moulding material and are usually tested at room temperature. Although the production phases of the PUCB system are refined to a high extent today, the effect of binder content on the quality of the mould/core and the final casting should be supported by new approaches also in thermal sciences, interpreted in high-temperature environment. In this work, different PUCB mixtures were produced to evaluate the effect of various binder levels on the thermophysical properties of sand cores. Thermogravimetry, differential thermal analysis and a novel application of Fourier thermal analysis were used to study the decomposition processes of the PUCB mixture and to reveal the impact of binder level on the heat absorption (cooling) capacity of sand cores at temperatures relevant in the manufacturing of cast iron parts (1300 ± 10 °C).

Place, publisher, year, edition, pages
Springer, 2017. Vol. 130, no 3, p. 1769-1777
Keywords [en]
Casting process; TG–DTA; Fourier thermal analysis; Heat absorption; Phenolic urethane resin
National Category
Metallurgy and Metallic Materials
Identifiers
URN: urn:nbn:se:hj:diva-37099DOI: 10.1007/s10973-017-6611-yISI: 000415619800056Scopus ID: 2-s2.0-85028008121Local ID: JTHMaterialISOAI: oai:DiVA.org:hj-37099DiVA, id: diva2:1137249
Available from: 2017-08-30 Created: 2017-08-30 Last updated: 2018-09-19Bibliographically approved

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Svidró, József TamásDiószegi, AttilaSvidró, Judit

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