Patent ID: 7662338

Claim:
A manufacturing method of a sintered powder molded body, comprising: a body molding step of injecting a sintering compound containing a binder and a sinterable powder, via a runner into a body mold thereby obtaining a molded body; a debinding step of removing the binder from the molded body, thereby obtaining a debound molded body; and a sintering step of making a sintered body by sintering the debound molded body, wherein the method further includes: an add-on mold forming step of forming an add-on mold covering the runner; and an add-on forming step of forming an add-on integral with the molded body by injecting into the add-on mold with an add-on forming compound, wherein the add-on forming compound is removable or separable from the molded body in the debinding step or the sintering step and the add-on embeds therein an outer periphery and one side with respect to the periphery of the molded body so as to protect the molded body from damage by mechanical contact with other objects while being handled.