浇铸铸铁部件提供的对象铜的第一铸造步骤形成多个朝向沿着通过中心孔圆周上的中心延伸的突起; 受试者铜部分固定到所述内模和由铁 - 帽部分的注射成型的熔融金属，从而帽部件主体铜部分和帽部分被一体地结合到包围所述多个突起的形状的第二铸造工序; 以及从模具中固化并移除所接合的主和副部件以及模具部件的取出步骤。

A first casting step of casting the cast iron parts providing a subject copper formed a plurality of protrusions extending toward the center along the circumference through the center hole; The subject copper part secured to the inner mold and the second casting step of forming a molten metal by the injection of iron-hat part so hat the parts subject copper part and the hat part is integrally bonded to the shape surrounding the plurality of protrusions; And combining the subject copper coagulation part and the hat part and take-out step of taking out from the mold; the brake disk manufacturing method including a is introduced.