Fracture surface treatment method and fracture surface treatment apparatus of a ductile metal part, and manufacturing method and manufacturing apparatus of a ductile metal part being fractured and having its fracture surfaces treated

A fracture surface treatment apparatus of a fractured ductile metal part for treating fracture surfaces of the ductile metal part, said fracture surfaces being obtained by a fracturing operation of fitting halved mandrel portions into a penetrative bore of the ductile metal part and driving a wedge in between the halved mandrel portions, comprising;

• a holding means for holding said fractured ductile metal part portions in a state where said fracture surfaces are separated from each other so as to keep a certain space between them, and
• a vibration applying means for applying a specified vibration to at least one of the said fractured ductile metal part portions in a direction intersecting the direction of fracture and thereby removing fracture powder stuck on said fracture surfaces,
• said fracture surface treatment apparatus further comprising a face fitting means for pressing the fracture surfaces of said fractured ductile metal part against each other with a sufficient pressing force for well fitting them to each other facing a strain produced in said fracture part in addition to said vibration applying means for applying vibration to said fractured ductile metal part portions in a state where they are apart from each other.