Abstract
Alfin pistons are made with cast iron inserts at the top groove area to increase the life of a piston. Cast iron inserts are dipped in 3L33 aluminum bath before inside the die. Due to the continuous dipping of the cast iron insert in the bond bath, the iron percentage has increased due to the dissolution of iron. Since iron is an impurity that affects the bonding property of alfin piston, also the bath cannot be used once the iron reaches above 3%. In this work, filter bag, centrifugal casting method, and special flux are used to remove the iron from the aluminum molten bath. This work recommended that the flux refining method was found to be efficient when compared to filter bag and centrifugal methods.
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