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Wyszukujesz frazę "casting yield" wg kryterium: Temat


Wyświetlanie 1-2 z 2
Tytuł:
Energy Savings in Foundries through Yield Improvement and Defect Reduction in Castings
Autorzy:
Chokkalingam, B.
Raja, V.
Dhineshkumar, M.
Priya, M.
Immanual, R.
Powiązania:
https://bibliotekanauki.pl/articles/382444.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
foundries
energy savings
casting yield
defective casting
melting
odlewnie
oszczędność energii
wydajność odlewania
wadliwe odlewy
topienie
Opis:
Energy conservation is an important step to overcome the energy crisis and prevent environmental pollution. Casting industry is a major consumer of energy among all the industries. The distribution of electrical energy consumed in all the departments of the foundry is presented. Nearly 70% of the energy is consumed especially in the melting department alone. Production of casting involves number of process variables. Even though lot of efforts has been taken to prevent defects, it occurs in the casting due to variables present in the process. This paper focuses the energy saving by improving the casting yield and by reducing the rejections. Furthermore an analysis is made on power consumption for melting in the induction furnace to produce defective castings and improvement in the casting yield. The energy consumed to produce defective castings in all other departments is also presented. This analysis reveals that without any further investment in the foundry, it is possible to save 3248.15 kWh of energy by reducing the rejections as well as by improving the casting yield. The redesign of the feeding system and the reduced major rejection shrinkage in the body casting improved the casting yield from 56% to 72% and also the effective yield from 12.89% to 66.80%.
Źródło:
Archives of Foundry Engineering; 2018, 18, 1; 15-18
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
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
    Wyświetlanie 1-2 z 2

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