| Summary: | This paper presents an overview on the state
of the art of applicable casting technology for applications
in the field of repairing aluminum alloy components.
Repair process on the Al alloy sample using similar metal
has been carried out to investigate the micro-structural
effect. Joining occurs as a result of convection heat
transfer of molten flow into the sand mold which melts the
existing base metal inside the mold and subsequent
solidification. The analytical model has been developed to
describe aluminum alloy component repair by turbulence
flow casting. The model is designed based on heat transfer
principle that can handle the phenomena of heat flow. The
experimental result and analytical model analyses pointed
out that joint quality are greatly affected by parameters of
preheating temperature and duration of molten metal flow
in the mold. To obtain a desired metallurgical sound at the
joint, the optimum temperature and time were adjusted in
order to obtain a similarity of microstructure between
filler and base metal. This model is aimed to predict the
use of the process parameter ranges in order to have the
optimum parameters when it is applied to the experiment.
The fixed parameters are flow rate, sand ratio, and
pouring temperature. The process parameters are
preheating temperature and pouring time. It is concluded
that analytical modeling has good agreement with the
experimental result.
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