Reheating of Liquidus Semi-Continuous Cast Al Alloy 112

Reheating the liquidus semi-continuous cast alloy 112 was conducted in a thermal furnace at different temperatures. The results show that during reheating the temperature field of the billet is nearly homogeneous, i.e. the temperature difference between the center and the surface of a billet is within 3?℃. The reason may come from the low heat absorptivity and high conductivity of the Al alloy. When the furnace temperature was set to 700, 740 and 800?℃ respectively,it takes 21, 18 and 15?minutes correspondingly for the billets to be reheated quickly into semi-solid state. At the same time,the alloy show an uniform, fine and globular microstructure which is very suitable for the forming.