Gas evolution rate from heated moulding sands bonded with organic binders

• Autorzy: Siewiorek, A. , Nowak, R. , Chojecki, A. , Mocek, J.
• Języki publikacji: EN

Abstrakty

EN

This study is continuation of research on gas evolution rate from heated moulding sands used in the manufacture of foundry moulds. The first stage of the study described in [1] included bentonite-bonded sands. At the second stage, sands bonded with organic binders were tested. The composition of gases, evolved at a given temperature using mould heating system that simulates the process of mould pouring with molten metal, was determined. Metal was not used in these studies to prevent its reaction with gases formed as a result of moulding sand heating, since this effect would significantly impede the gas identification or even make it totally impossible.

Słowa kluczowe

PL

piasek formierski; spoiwo organiczne; analiza gazu

EN

moulding sand; organic binders; gas analysis

• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2011
• Tom: Vol. 11, iss. 1
• Strony: 87-92
• Opis fizyczny: Bibliogr. 9 poz., rys., tab., wykr.

Twórcy

autor

Siewiorek, A.

autor

Nowak, R.

autor

Chojecki, A.

autor

Mocek, J.

• Foundry Research Institute, Centre for High Temperature Studies, ul. Zakopiańska 73, 30-418 Kraków, Poland,

Bibliografia

• [1] A. Chojecki, J. Mocek, N. Sobczak, A. Siewiorek: Evolution of the gas atmosphere during heating the foundry sand bonded with bentonite clay - in print.
• [2] M. Holtzer and A. Bobrowski: Analysis of gases emitted from bentonite-carbon carrier mixtures, used in metal casting at the range of 30-1000oC. Archives of Foundry Engineering 10[3] (2010) 193-198.
• [3] J. Campbell: Castings, sec. edition, Elsevier Butterworth Heinemann, (2004).
• [4] R. Wellbrock, D. Ashburn: Carbonaceous Additives and Emission of Benzene During the Metalcasting Process. AFS Transactions 11 (1988) 293-299.
• [5] H. W. Dietert, A. L Graham, R. M. Praski: Gas evolution in foundry materials. Its source and measurement. AFS Trans. 55 (1976) 221-228.
• [6] J. Orlenius, A. Dioszegi, Z. Dioszegi: Gas absorption in gray iron during mould filling. Int. J. Cast Met. Res.. 21 (2008) 427-434.
• [7] T. Szmigielski: Measurement of gas pressure in sand mould. Archives of Mechanical Technology 24, 2004, nr 3, pp 163-171.
• [8] P. Scraber, C. Bates J. Griffin: Avoiding gas defects through mould and core package design. Modern Casting, v. 96, issue 12, (2006), 38- 40.
• [9] Urządzenie do badania właściwości powierzchniowych ciekłych stopów, N. Sobczak, J. Schmidt, A. Kazakov, z dn. 26.07.1991- Patent PL-166953.