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Effect of the Type of Inorganic Binder on the Properties of Microwave-Hardened Moulding Sands for Ablation Casting Technology

Puzio, S. ; Kamińska, J. ; Angrecki, M. ; Major-Gabryś, K.

Archives of metallurgy and materials, 2020-01, Vol.65 (4), p.1385-1390 [Periódico revisado por pares]

Warsaw: Polish Academy of Sciences

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  • Título:
    Effect of the Type of Inorganic Binder on the Properties of Microwave-Hardened Moulding Sands for Ablation Casting Technology
  • Autor: Puzio, S. ; Kamińska, J. ; Angrecki, M. ; Major-Gabryś, K.
  • Assuntos: Ablation ; Aluminum base alloys ; Casting ; Casting alloys ; Foundry sands ; Hardening ; Liquid alloys ; Mixtures ; Molding (process) ; Molds ; Sand casting
  • É parte de: Archives of metallurgy and materials, 2020-01, Vol.65 (4), p.1385-1390
  • Descrição: The aim of this study is to demonstrate the possibility of using moulding sands based on inorganic binders hardened in a microwave chamber in the technology of ablation casting of aluminium alloys. The essence of the ablation casting technology consists in this that a mould with a water-soluble binder is continuously washed with water immediately after being poured with liquid alloy until its complete erosion takes place. The application of an environmentally friendly inorganic binder improves the ecology of the whole process, while microwave hardening of moulding sands allows moulds to be made from the sand mixture containing only a small amount of binder. The studies described in this article included microwave-hardened sand mixtures containing the addition of selected inorganic binders available on the market. The strength of the sands with selected binders added in an amount of 1.0; 1.5 and 2.0 parts by mass was tested. As a next step, the sand mixtures with the strength optimal for ablation casting technology, i.e. about 1.5 MPa, were selected and tested for the gas forming tendency. In the four selected sand mixtures, changes occurring in the samples during heating were traced. Tests also included mould response to the destructive effect of ablation medium, which consisted in the measurement of time necessary for moulds to disintegrate while washed with water. Tests have shown the possibility of using environmentally friendly, microwave-hardened moulding sands in ablation casting of aluminium alloys.
  • Editor: Warsaw: Polish Academy of Sciences
  • Idioma: Polonês;Inglês
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