Evaluation of Collapsibility of Selected Core Systems

• Autorzy: Obzina Tomas , Merta V. , Rygel J. , Lichý P. , Drobíková K.

Identyfikatory

DOI

10.24425/afe.2022.140216

• Języki publikacji: EN

Abstrakty

EN

There are mainly two different ways of producing sand cores in the industry. The most used is the shooting moulding process. A mixture of sand and binder is injected by compressed air into a cavity (core), where it is then thermally or chemically cured. Another relatively new method of manufacturing cores is the use of 3D printing. The principle is based on the method of local curing of the sand bed. The ability to destroy sand cores after casting can be evaluated by means of tests that are carried out directly on the test core. In most cases, the core is thermally degraded and the mechanical properties before and after thermal exposure are measured. Another possible way to determine the collapsibility of core mixtures can be performed on test castings, where a specific casting is designed for different binder systems. The residual strength is measured by subsequent shake-out or knock-out tests. In this paper, attention will be paid to the collapsibility of core mixtures in aluminium castings.

Słowa kluczowe

EN

foundry; foundry cores; methods of manufacturing; knocking-out; collapsibility

PL

odlewnia; rdzenie odlewnicze; metody wytwarzania

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2022
• Tom: Vol. 22, iss. 1
• Strony: 48--52
• Opis fizyczny: Bibliogr. 8 poz., rys., tab., wykr.

Twórcy

autor

Obzina Tomas

• VSB - Technical University of Ostrava, Czech Republic

autor

Merta V.

• VSB - Technical University of Ostrava, Czech Republic

autor

Rygel J.

• VSB - Technical University of Ostrava, Czech Republic

autor

Lichý P.

• VSB - Technical University of Ostrava, Czech Republic

autor

Drobíková K.

• VSB - Technical University of Ostrava, Czech Republic

Bibliografia

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• [8] Dobosz, P., Jelínek, K., Major-Gabryś, K. (2011). Development tendencies of moulding and core sands. China Foundry. 8, 438-446.