Strength measurement of impulse compacted moulding sand

• Autorzy: Mikulczyński T. , Ciskowski S.
• Języki publikacji: EN

Abstrakty

EN

Analysis of impulse compaction process shows that during compaction process moulding sand is subject to deformation and changes of total pressure, measured inside compacted moulding sand, represent fading sinusoid. Measured pressure values in stationary states (after compaction process) are equal to the sum of squeezing pressure pc and the pressure resulting from compacting the sandmix pu, which expresses the obtained strength. Therefore experimental research of moulding sands were conducted. Strength factor Rc and pressure pu values were determined as a function of densening degree \delta. Analysis of presented results proves that pu pressure resulting from compacting of the moulding sand expresses compressive strength factor Rc. This confirms that developed methodology permits strength measurements of moulding sand in the mould. Moreover as it is possible to determine pu values with simulation research of developed mathematical model of impulse process it is possible to determine compressive strength factor.

Słowa kluczowe

EN

mechanization of foundry engineering; automation in foundry engineering; moulding sand; impulse compaction process; mathematical model; strength measurement

PL

mechanizacja procesów odlewniczych; automatyzacja odlewnictwa; piasek formierski; proces zagęszczania; model matematyczny; badanie wytrzymałościowe

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2011
• Tom: Vol. 11, iss. 1
• Strony: 79--82
• Opis fizyczny: Bibliogr. 9 poz., rys., wykr.

Twórcy

autor

Mikulczyński T.

autor

Ciskowski S.

• Laboratorium Podstaw Automatyzacji, Instytut technologii Maszyn i Automatyzacji, Politechnika Wrocławska,

Bibliografia

• [1] J. L. Lewandowski, Moulding and core sands, Publishing House "Akapit", Kraków 1997 (in Polish).
• [2] T. Mikulczyński, M. Bogdan, S. Ciskowski, Ł. Dworzak: Mechanism of impulse compacting of moulding sands. Archives of Foundry Engineering. 2008 vol. 8, spec. iss. 1.
• [3] S. Ciskowski, M. Ganczarek, T. Mikulczyński, Mathematical modelling of moulding sand dynamic squeezing, Technological Engineering, Roc. 4, nr 1, 2007 (in Polish).
• [4] M. Ganczarek, W. Kollek, T. Mikulczyński, D. Nowak, Modelling and simulation research of moulding sand squeezing process using high - speed pneumatic drive, Slevarenstvi, Roc. 52, cis. 11/12, 2004 (in Polish).
• [5] T. Mikulczyński, S. Ciskowski: Mathematical modelling of impulse compaction process of moulding sands - simulation and experimental research. Archives of Metallurgy and Materials. 2010, vol. 55, iss. 3.
• [6] T. Mikulczyński, S. Fita, S. Ciskowski, Ł. Dworzak, Pressure measurement in disintegreted media. Pomiary, Automatyka, Robotyka. 2009, R. 13, nr 2. (in Polish).
• [7] T. Mikulczyński, S. Ciskowski, M. Ganczarek, D. Nowak, Ł. Dworzak, Modelling of rheological properties of selected disintegrated media, Archives of Metallurgy and Materials, Vol. 52, Issue 3/2007.
• [8] T. Mikulczyński, S. Ciskowski, Selected simulation and experimental research of impulse compacting of moulding sand. Archives of Foundry Engineering. 2009, vol. 9, iss. 1.
• [9] T. Mikulczyński, Application of a pneumatic impact drive for dynamic compaction of moulding sands, Prz. Odlew., vol. 51 No. 1, 2001 (in Polish).