Selection of Hardening Technology of Moulding Sand with Hydrated Sodium Silicate Binder Devoted to Aluminum Alloys Ablation Casting

• Autorzy: Major-Gabryś K. , Hosadyna-Kondracka M. , Grabarczyk A. , Kamińska J.

Identyfikatory

DOI

10.24425/amm.2019.126260

• Języki publikacji: EN

Abstrakty

EN

The ablation casting technology consists in pouring castings in single-use moulds made from the mixture of sand and watersoluble binder. After pouring the mould with liquid metal, while the casting is still solidifying, the mould destruction (washing out, erosion) takes place using a stream of cooling medium, which in this case is water. The following paper focuses on the selection of moulding sands with hydrated sodium silicate technologies for moulds devoted to the ablation casting of aluminum alloys. It has been proposed to use different types of moulding sands with a water-soluble binder, which is hydrated sodium silicate. The authors showed that the best kind of moulding sands for moulds for Al alloy casting will be moulding sands hardened with physical factors – through dehydration. The use of microwave hardened moulding sands and moulding sands made in hot-box technology has been proposed. The tests were carried out on moulding sands with different types of modified binder and various inorganic additives. The paper compares viscosity of different binders used in the research and thermal degradation of moulding sands with tested binders. The paper analyzes the influence of hardening time periods on bending strength of moulding sands with hydrated sodium silicate prepared in hot-box technology. The analysis of literature data and own research have shown that molding sand with hydrated sodium silicate hardened by dehydration is characterized by sufficient strength properties for the ablation foundry of Al alloys.

Słowa kluczowe

EN

foundry engineering; ablation casting; moulding sands; hydrated sodium silicate; hot-box technology

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2019
• Tom: Vol. 64, iss. 1
• Strony: 359--364
• Opis fizyczny: Bibliogr. 17 poz., fot., rys., tab.

Twórcy

autor

Major-Gabryś K.

• AGH University of Science and Technology, Faculty of Foundry Engineering, Department of Moulding Materials, Mould Technology and Foundry of Nonferrous Metals, Mickiewicza 30, 30-059 Kraków, Poland

autor

Hosadyna-Kondracka M.

• Foundry Research Institute, 73 Zakopianska Str., 30-418 Kraków, Poland

autor

Grabarczyk A.

• AGH University of Science and Technology, Faculty of Foundry Engineering, Department of Moulding Materials, Mould Technology and Foundry of Nonferrous Metals, Mickiewicza 30, 30-059 Kraków, Poland

autor

Kamińska J.

• Foundry Research Institute, 73 Zakopianska Str., 30-418 Kraków, Poland

Bibliografia

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Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).