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Schmelztechnik
Dokumenten-Nummer: 57788
02 Publikationssprache: Englisch
Zuo, Y. B.; Jiang, B.; Zhang, Y. J.; Fan, Z.
Degassing LM25 aluminium alloy by novel degassing technology with intensive melt shearing
Neue Entgasungstechnik für die Aluminium-Gusslegierung LM25 durch intensives mechanisches Rühren
Hydrogen is the only gas that is appreciably soluble in aluminium and its alloys and is the main cause of the gas porosity
in aluminium alloy castings. A novel degassing technology with intensive melt shearing and Ar injection has been
developed and its degassing effect on aluminium alloy has been studied. The experimental results showed that the new
degassing technology can significantly degas LM25 aluminium alloy within a quite short period of time. By applying
intensive melt shearing and Ar injection of 60 s, the density index D (ind i) was reduced from 10.70 to 0.98%, which
means that the hydrogen concentration in the liquid alloy was significantly reduced. The effect of degassing time and
isothermal holding time after degassing on the hydrogen concentration level in LM25 alloy melt was also studied and
the mechanism of high degassing efficiency with this technology was discussed
Northeastern University, Shenyang, CN; Brunel University, Uxbridge, GB
International Journal of Cast Metals Research
Erscheinungsjahr 2013
Heftnummer 1
S. S.16-21 (6 Seiten, 7 Bilder, 1 Tabellen, 32 Quellen)
Giesserei Literaturschau