Horizontal continuous casting apparatus and method for manufacturing aluminum alloy cast rod using the same

A horizontal continuous casting apparatus, in which molten aluminum alloy in a molten metal receiving portion of a hollow mold is supplied from one end side of the mold to a hollow portion of the mold, of which the central axis of the hollow portion is arranged along a horizontal direction, to manufacture an aluminum alloy cast rod, comprising:

• a fluid supply pipe for supplying a lubricating fluid to the hollow portion of the mold, which is arranged on one end side of the mold;
• and,
• a cooling water cavity for accommodating cooling water cooling an inner peripheral surface of the hollow portion of the mold, which is formed outside the inner peripheral surface:
• wherein the inner peripheral surface and an inner bottom surface of the cooling water cavity facing the inner peripheral surface form parallel surfaces with each other, and a cooling wall of the mold between the inner peripheral surface and the inner bottom surface is solid and formed so that a heat flux value per unit area from the molten aluminum alloy to the cooling water is 10×105 W/m2 or more, wherein the heat flux value per unit area of 10×105 W/m2 or more is due to the cooling wall of the mold between the inner peripheral surface and the inner bottom surface being solid.