Evaluation of porosity in Al alloy die castings

• Autorzy: Říhová M. , Cech J. , Havlíčková J.
• Języki publikacji: EN

Abstrakty

EN

Mechanical properties of an Al-alloy die casting depend significantly on its structural properties. Porosity in Al-alloy castings is one of the most frequent causes of waste castings. Gas pores are responsible for impaired mechanical-technological properties of cast materials. On the basis of a complex evaluation of experiments conducted on AlSi9Cu3 alloy samples taken from the upper engine block which was die-cast with and without local squeeze casting it can be said that castings manufactured without squeeze casting exhibit maximum porosity in the longitudinal section. The area without local squeeze casting exhibits a certain reduction in mechanical properties and porosity increased to as much as 5%. However, this still meets the norms set by SKODA AUTO a.s.

Słowa kluczowe

EN

AlSi9Cu3 alloy; casting; engine block; porosity; mechanical values; simulation

PL

stop AlSi9Cu3; odlewnictwo; kadłub silnika; porowatość; wielkość mechaniczna; symulacja

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2012
• Tom: Vol. 12, iss. 1
• Strony: 93--98
• Opis fizyczny: Bibliogr. 11 poz., rys., tab., wykr.

Twórcy

autor

Říhová M.

autor

Cech J.

autor

Havlíčková J.

• Institute of Manufacturing Technology, Department of Foundry Engineering, Faculty of Mechanical Engineering, Brno University of Technology, Technická 2896/2, Brno, Czech Republic,

Bibliografia

• [1] Bähr, R., Todte, M. & Stroppe, H. (2006). Prediction of the influence of microstructure, porosity and residual stresses on strength properties of aluminium castings. In World Foundry Congress, 2006.
• [2] Stroppe, H. (2000). Einfluss der Porosität auf die mechanischen Eigenschaften von Gusslegierung. Giessereiforschung. 52, 58-60.
• [3] Čech, J., Říhová, M. & Lefner, J. (2010). Evaluation of effect of technological and metallurgical factors on porosity of die-cast Al alloys. Slévárenství. LVIII (5-6), 159-165. (in Czech).
• [4] Lefner, J. (2009). Evaluation of mechanical and structural properties of new block. Diploma thesis, VUT FSI, Brno. (in Czech).
• [5] Říhová, M. (2008). Evaluation of porosity in gravity-cast Al-alloy castings. Diploma thesis. VUT FSI, Brno. (in Czech).
• [6] Havlíková, J. (2011). Using simulation for prediction of defects and evaluation of properties in Al-alloy die-castings. Diploma thesis. VUT FSI, Brno. (in Czech).
• [7] Jirků, J. (2007). Evaluation of porosity in Al-alloy die-castings. Diploma thesis. VUT FSI, Brno. (in Czech).
• [8] Klocová, P. (2008). Evaluation of porosity in Al-alloy die-castings. Diploma thesis. VUT FSI, Brno. (in Czech).
• [9] Talanda, I. (2010). Study of main factors affecting quality in technological processes. Bachelor thesis. VUT FSI, Brno. (in Czech).
• [10] Čech, J., Šolc, P., Krutiš, V. & Pecal, B. (2010). Prediction of porosity and microstructure in Al-alloy die castings, via simulation and experiment. Slévárenství. LVIII (3-4), 83-94. (in Czech).
• [11] Čech, J., Říhová, M. & Havlíčková, J. (2012). Possibilities of evaluating porosity in die-cast Al alloys. to be published in Slévárenství. (in Czech).