Patent ID: 7654305

Claim:
A die for die casting comprising: a stationary die; and a movable die to be combined with the stationary die, wherein when the movable die is combined with the stationary die, a biscuit section by which molten metal is to be received from an infusion device of a casting machine, a product section which is a space in which a product is to be cast, a runner section which guides the molten metal from the biscuit section toward the product section, and a fin section which is provided between the runner section and the product section and has a thickness which decreases as a distance to the product section decreases are formed between the stationary die and the movable die, the product section includes an end part and other end part, the end part extending in a stream direction of the molten metal, and the other end part being positioned from the end part in a direction intersecting the stream direction of the molten metal in the product section, the fin section is entirely connected to the product section continuously from the end part to the other end part of the product section, and includes fin thick parts in areas on both sides of a region which the molten metal reaches when the molten metal straightly flows from the biscuit section in the stream direction of the molten metal, the areas being away from the region in the direction intersecting the stream direction of the molten metal, the fin thick parts being formed thicker than the region and extending from the runner section to the product section, and the product section includes product thick parts in areas located downstream of the fin thick parts in the stream direction of the molten metal, the product thick parts being space parts connected to the fin thick parts, respectively, and being formed thicker than a region of the product section connected to the region, and end parts of the product thick parts connected to the fin thick parts are formed to have the same thickness as the fin thick parts.