Dilatometric examination of moulds with plaster binder

• Autorzy: Nadolski M. , Konopka Z. , Łągiewka M. , Zyska A.
• Języki publikacji: EN

Abstrakty

EN

Investigations concerning thermal expansion of moulding materials with plaster binder have been performed for two mixture compositions of Authors' own design, as well as for the material used in jewellery industry under the Prima-Cast trade name, and for ThermoMold 1200 moulding material. The results of dilatometric examinations of these materials, carried out within the temperature range from about 20oC to 650oC by means of the DA-3 automatic dilatometer, have been compared. An analysis of this comparison has revealed that it is the matrix composition which is decisive for the magnitude of dimensional changes of moulds, and that applying components which do not exhibit polymorphic transformations reduces dimensional changes of a mould during its thermal treatment.

Słowa kluczowe

EN

plaster mould; precision casting; artistic casting

PL

forma odlewnicza; odlewanie precyzyjne; odlewanie artystyczne

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2011
• Tom: Vol. 11, iss. 1
• Strony: 83--86
• Opis fizyczny: Bibliogr. 6 poz., tab., wykr.

Twórcy

autor

Nadolski M.

autor

Konopka Z.

autor

Łągiewka M.

autor

Zyska A.

• Department of Foundry, Technical University of Częstochowa, ul. Armii Krajowej 19, 42-200 Częstochowa, Polska,

Bibliografia

• [1] J. L. Lewandowski, Materials for casting moulds, Ed. Akapit, Cracow (1997) (in Polish).
• [2] M. Pawlak, Z. Niedźwiedzki, Dilatometric studies of plaster sandmix in raw and heat treated state, Archives of Foundry Engineering, vol. 8, issue 3 (2008) 145-148.
• [3] Z. Piłkowski, M. Czyż, Examining the moulding materials for the Vacumetal process, Solidification of Metals and Alloys, No. 31 (1997) 171-180 (in Polish).
• [4] M. Wiktorski, M. Pawlak, Z. Niedźwiedzki, Effect of plaster moulds compositions on thermal dilatation of plaster moulds used in precision casting, Archives of Foundry, 2005, vol. 5, No. 17, 232-240 (in Polish).
• [5] M. Nadolski, Z. Konopka, M. Łągiewka, A. Zyska, The assessment of influence of additions modifying plaster moulding material on its mechanical and technological properties, Technológ (Slovakia), vol. 2, April (2010) 170-175 (in Polish).
• [6] M. Nadolski, The method of producing artistic castings by investment casting in multilayer plaster moulds, III International Scientific Session "New Technologies and Achievements in Metallurgy and Material Science", Częstochowa (2002) 29-32 (in Polish).