Abstract:
The casting of Non-ferrous Aluminium is a very critical process which requires stringent
methoding and all its parameters such as melting temperature, pouring velocity and preheating
of dies for a sound casting which will be hydraulically tested for acceptance of
the casting. The Aluminium Alloy used contains higher amount of Zinc up to 10% by
weight which is a another critical aspect to prevent slag formation of the Zinc along with
the melting temperature of the Aluminium which reaches to 850 °C. The strength of the
Aluminium ASZ 15,16,17 have been tested and grain refiners & binders for cores have
been used to further increase the strength followed by addition of MOD Alloy in the
Aluminium molten metal after de-gassing. This Research work focusses on the methods
to reduce the generation of the gases due to reaction between molten metal and a foundry
flux Zircon. The pre-heating of the die, cores and methods are adopted for effective
removal of the gases from the core after pouring of the metal. The effect of gas is very
severe since it restricts the molten Aluminium to develop the ribs of the Impeller and
Runner of a fluid coupling. The effect of gas which is generated has to be studied and
reduce its generation and also provision for the easy removal of the gases from the Cores
during pouring.
