- Tytuł:
- Increase of liquid metal utilization during production of bearing circle castings for cement furnaces
- Autorzy:
-
Zadera, A.
Senberger, J.
Carbol, Z.
Pluhaček, J. - Powiązania:
- https://bibliotekanauki.pl/articles/382814.pdf
- Data publikacji:
- 2012
- Wydawca:
- Polska Akademia Nauk. Czytelnia Czasopism PAN
- Tematy:
-
odlew ciężki
modelowanie krzepnięcia
odporność na rozrywanie
plastyczność
skurcz stopu
heavy casting
modelling of solidification
breaking strength
yield value
ductility
contraction - Opis:
- In manufacture of super heavy castings for cement furnaces a saving of liquid metal has been achieved by lowering the riser weight. By solidification modelling with the aid of the Niyama criterion a zone in the riser was designated where the occurrence of foundry defects (shrinkage porosity) can be expected. A plate of the material of dimensions ca 700*800*250 mm was taken from the riser. After thermal treatment the samples for making the bars for the static tensile test were taken from it. Based on done tests it has been found out that mechanical characteristics obtained from the static tensile test correlate, besides contraction, in the chosen level of statistical importance of p = 0.01 with carbon content. Neither in the zone of probable occurrence of defects designated by the Niyama criterion during solidification modelling the drop of strength characteristics was observed. Carbon content in a decisive extent influenced the strength characteristics. In case of ductility and contraction the convenient correlations with carbon content were observed from the riser height of 200 mm only. In the height of 400 mm there was already considerable variation of values and some values were lower ones than is demanded by standards.
- Źródło:
-
Archives of Foundry Engineering; 2012, 12, 2; 111-116
1897-3310
2299-2944 - Pojawia się w:
- Archives of Foundry Engineering
- Dostawca treści:
- Biblioteka Nauki
Artykuł