Patent ID: 6926064

Claim:
A method for manufacturing a disk rotor comprising: a pre-form supporting step of supporting and securing a pre-form at a preset site of a first metal mold during a second metal mold is separated from said first metal mold; and a molding step of charging and pressuring molten metal in a cavity defined between the first and second molds during said second metal mold is contacted with said first metal mold, by way of mold clamping: providing a movable main body part of the first metal mold; providing a supporting member assuming a second state in contact with said main body part of the metal mold and a first state slidable towards an outer periphery with respect to said second state, wherein in the pre-form supporting step, said main body part of the metal mold is located at a preset position to set the first state of said supporting member to guide said pre-form to a preset position; said main body part of the metal mold then being located at another preset position to set said supporting member in the second state; a marginal portion of said disk rotor being supported and secured in said second state by said supporting member.