New version of experimental setup for investigation of linear contraction and shrinkage stresses of metals and alloys

• Autorzy: Mutwil J.
• Języki publikacji: EN

Abstrakty

EN

A new version of an experimental set-up for examination of linear contraction and shrinkage stresses progress of metals and alloys during– and after solidification has been described. By new method the examinations of the shrinkage phenomena are conducted in a vertical rod-casting with circular cross-section. The test rod casting can have a constant cross-section (constrained contraction, parted mould) or can be tapered (unconstrained contraction, no parted mould). The examinations can be conducted in sand and metal mould. A microprocessor recorder has been used for registering of measured signals. In the contraction experiment the dimensions changes of solidified test bar and the test mould are registered. By the investigation of contraction stresses, a contraction force effecting on the solidified test bar is registered instead of its dimension changes. The temperature changes of the shrinkage rod casting (in 6 points) and the mould (in one point) can be measured. Exemplary investigation results of linear contraction development in aluminium have been presented.

Słowa kluczowe

EN

linear contraction; shrinkage stresses; experimental set-up

PL

skurcz liniowy; naprężenie skurczowe; badania eksperymentalne

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2008
• Tom: Vol. 8, iss. 4
• Strony: 133--140
• Opis fizyczny: Bibliogr. 12 poz., fot., rys.

Twórcy

autor

Mutwil J.

• University of Zielona Góra, Department of Mechanical Engineering, ul. Podgórna 50, 65-246 Zielona Góra,

Bibliografia

• [1] I. I. Novikov, Hot shortness of non-ferrous metals and alloys, Nauka, Moscow, 1966 (in Russian).
• [2] G. A. Korolkov, Dependence of linear contraction on alloys composition by eutectic alloying systems, Liteinoe Proizvodstvo, No. 1 (1986), 6-7. (in Russian).
• [3] D. Eskine, J. Zuidema, L. Katgerman, Linear solidification contraction of binary and commercial aluminum alloys, International Journal of Cast Metals Research, vol. 14, No. 4, (2002). 217-224.
• [4] D. Eskine, L. Katgerman, Contraction behaviour of aluminium alloys during solidification, International Foundry Research, vol. 59, No. 2, (2007) 8-13.
• [5] A. Gazda, E. Zemlak, Aparatus for registration of dimension changes of solidifying foundry alloys, Prace IO w Krakowie, No. 2, 3, Kraków 1993 (in Polish).
• [6] A. Studnicki, S. Jura, J. Kilarski, Examinations of chromium cast iron on foundry dilatometer DO-01/P, Solidification of metals and alloys, No. 38 (1998) 222-228 (in Polish).
• [7] J. Mutwil, Stand for investigation of linear contraction and shrinkage stresses in castings, Archives of Foundry, vol. 3, No. 8 (2003) 287-292 (in Polish).
• [8] J. Mutwil, Investigations of linear contraction of solidifying and self-cooling AlSi5.4 alloy, Archives of Foundry, vol. 6, No. 18/1, (2006) 67-72 (in Polish).
• [9] J. Mutwil, S. Kłos, Investigations of linear contraction of solidifying and self-cooling AlSi6.9 alloy, Archives of Foundry, vol. 6, No 19 (2006) 201-206 (in Polish).
• [10] J. Mutwil, Linear contraction and shrinkage stresses in period of solidification and self-cooling of AlSi21 alloy, Archives of Foundry, vol. 6, No. 21 (2006) 93-100 (in Polish).
• [11] Z. Ignaszak, Opinion expressed in a paper review and by private conversation (2006).
• [12] J. Mutwil, K. Kujawa, P. Marczewski, P. Michajłow, Influence of silicon concentration on linear contraction process of Al-Si binary alloy, Archives of Foundry Engineering vol. 8, No. 4 (2008) 141-148.