Abstract
For the die-casting mold design, the inferior forming, such as a poor circumference of melting metal and blow hole, may generate with some filling action and temperature of melting metal in a metallic mold. In order to reduce the inferior forming, it is necessary to control the flow state of melting metal. In this research, in order to realize the inferior forming reduction by control of flow state of melting metal, its attention is directed to a branched type runner, examined about the influence a branched type runner's form affects a flow state using CAE technology.