Patent ID: 7637306

Claim:
A continuous casting apparatus for producing aluminum alloy cast bars, comprising: a molten metal-receiving portion containing molten aluminum alloy; a horizontal mold which has an upstream end and a downstream end and to which the molten aluminum alloy is supplied through the upstream end of the mold; an insulation member which is disposed between the molten metal-receiving portion and the upstream end of the mold and which has a molten metal passage for allowing communication between the molten metal-receiving portion and the mold; and a separation layer disposed on the insulation layer, wherein the separation layer is disposed on a side surface of the insulation member facing the molten metal-receiving portion or is disposed between two insulation members, the separation layer having an aperture which is in communication with the molten metal passage, wherein, in relation to the insulation member disposed between the upstream end of the mold and the separation layer, the insulation member has a portion facing a hollow portion of the mold and having an area of 40 to 85%, in an area ratio, of a radial cross sectional area of the hollow portion of the mold.