Abstract:
Aluminum used many generated from household, workshop, office, factory and so
on. All this time, the Al scrap is only collected by the owner and sold to the
foundry foundry industry. It can be recycled into various products for various
alternative products and has the potential to become a source of business. The
evaporative casting method is to use Styrofoam as a pattern dumped in the printed
sand. This method will produce castings that match the pattern of Styrofoam
made. Melting is done by liquefying Al in a crucible furnace and then poured with
a variation of casting temperatur of 650°C, 700°C, 750°C, 800°C. The objective
of this research is to know the temperatur of pouring temperatur and material type
to micro structure, porosity, and hardness of evaporative casting. The smelting
furnace uses a crucible furnace with charcoal wood fuel. Materials used for
casting Al scrap piston motorcycles and beverage cans. From the observation of
the microstructure shows that the higher temperatur of the dendrite chamber size
will change from short thin flakes to flakes. The thicker the thicker the lighter the
export the higher and the higher the hardness.
