Naslov
Study of shrinkage cavity occurance in AlSi9Cu3 high pressure die casting

Autori
Zovko Brodarac, Zdenka ; Trbižan, Milan ; Unkić, Faruk

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
43. livarsko strokovno posvetovanje : Zbornik referatov ; u: Livarski vestnik 50 (2003) (3) / Trbižan, Milan - Ljubljana : Društvo livarjev Slovenije, 2003, 70-71

Skup
Livarsko strokovno posvetovanje (43 ; 2003)

Mjesto i datum
Ljubljana, Slovenija, 18.09.2003. - 19.09.2003

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Nije recenziran

Ključne riječi
Al-Si alloy; HPDC; shrinkage cavity; microstructure; X-ray; solidification and porosity simulation; squeezing process.

Sažetak
The shrinkage cavity occurrence on the bracket of alternating current generator was examined. The shrinkage cavity is occurring on the hot spot place as a result of insufficient feeding. This kind of defect can cause unsoundness and rejection of castings. Metallographic analysis, X-ray analysis as well as solidification and porosity simulation were provided. Mechanical properties examination does not show any deviation from the required values. Metallographic and X– ray analyses results verified simulation accuracy. MAGMASoft software justifies its industry application for the preliminary analysis of technological process correctness, as well as prediction of defects occurring. The shrinkage cavity can be removed with the change of casting and tool construction, which is related with the big expenses. An alternative mechanism, with respect to the present complex casting and tool geometry, implicates mass feeding in the moment when the liquid is in a mushy state. This became the theoretical base for the squeezing process for shrinkage cavity elimination.

Izvorni jezik
Engleski

Znanstvena područja
Metalurgija

POVEZANOST RADA