Effect of Microwave Heating on Moulding Sand Properties with Gypsum Binder

• Autorzy: Paduchowicz P. , Stachowicz M. , Granat K.

Identyfikatory

DOI

10.1515/afe-2017-0098

• Języki publikacji: EN

Abstrakty

EN

The paper presents results of initial research on the possibility of applying microwave radiation in an innovative process of making casting moulds from silica sand, where gypsum CaSO4∙2H2O was acting as a binding material. In the research were compared strengths and technological properties of moulding mixture subjected to: natural bonding process at ambient temperature or natural curing with additional microwave drying or heating with the use of microwaves immediately after samples were formed. Used in the research moulding sands, in which dry constituents i.e. sand matrix and gypsum were mixed in the ratio: 89/11. On the basis of the results of strength tests which were obtained by various curing methods, beneficial effect of using microwaves at 2.45 GHz for drying up was observed after 1, 2 and 5 hours since moisture sandmix was formed. Applying the microwaves for hardening just after forming the samples guarantees satisfactory results in the obtained mechanical parameters. In addition, it has been noted that, from a technological and economic point of view, drying the silica sand with gypsum binder in microwave field can be an alternative to traditional molding sand technologies.

Słowa kluczowe

EN

foundry industry; foundry materials; foundry technology; microwave heating; gypsum; binding material

PL

przemysł odlewniczy; materiały odlewnicze; technologia odlewnicza; ogrzewanie mikrofalowe; gips; materiał wiążący

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2017
• Tom: Vol. 17, iss. 3
• Strony: 97--102
• Opis fizyczny: Bibliogr. 30 poz., il., rys.

Twórcy

autor

Paduchowicz P.

• Wrocław University of Technology, Faculty of Mechanical Engineering, ul. I. Łukasiewicza 5, 50-371 Wrocław, Poland

autor

Stachowicz M.

• Wrocław University of Technology, Faculty of Mechanical Engineering, ul. I. Łukasiewicza 5, 50-371 Wrocław, Poland

autor

Granat K.

• Wrocław University of Technology, Faculty of Mechanical Engineering, ul. I. Łukasiewicza 5, 50-371 Wrocław, Poland

Bibliografia

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Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017)