A hot-stamping formed article is formed of a single steel sheet, and includes: a top sheet portion; a pair of standing wall portions; and a protrusion portion which connects the top sheet portion to the standing wall portion and protrudes outward from the top sheet portion, in which the protrusion portion includes an inner wall portion which stands upright from the top sheet portion, and an outer wall portion which is folded outward from an end edge of the inner wall portion, and an angle between the top sheet portion and the protrusion portion is 80° to 90°.

Provided are a seamless can body having excellent pressure resistance and a method for producing the seamless can body. The seamless can body according to the present invention includes a tubular body section (10), a peripheral ground section (20b) continuing from a lower end of the tubular body section, and a raised bottom section (30) continuing from the peripheral ground section toward a center-axis side. When an outer surface area of the raised bottom section is denoted by A.sub.D and an area of a virtual plane an outline of which is formed by the peripheral ground section is denoted by A.sub.B, a relation of 1.55 ≥ (A.sub.D/A.sub.B) ≥ 1.40 is satisfied.

A preform of a can includes: a dome part being concave into the bottomed cylindrical body; and an annular leg part projecting in a direction opposite to a direction in which the dome part is concave, the dome part and the annular part being molded to form the preform of the can, and an inner surface of the dome part being pressed to mold a molded can. A maximum height of the preform of the can from a ground plane to the dome part is greater than a maximum height of the molded can from a ground plane to the dome part. In a vertical cross-sectional view, a length of an inner peripheral section of the leg part connecting between a ground point of the leg part and the dome part of the preform of the can is greater than a length of a curved end molded around the dome part of the molded can.

A reform apparatus for reforming a bottom portion of a metallic beverage container is provided. The reform apparatus generally includes a pair of reform rollers interconnected to pivot arms. Spring are operably interconnected to the reform rollers such that the reform rollers a biased radially inwardly in an unactuated state. The springs at least one of spring bushings and compression springs. The reform rollers rotate radially outwardly when a wedge member pushes axially between the two pivot arms. The wedge member engages and imparts rotation to the pivot arms. An annular edge of each of the reform rollers contacts an inner wall portion of the bottom portion of the beverage container to form a groove of a predetermined size and shape.

A center pillar reinforcement is produced satisfactorily by using a high-tensile material having a low ductility as a blank. The center pillar reinforcement is produced by performing a first step for producing a first intermediate formed product on which a body is partially formed by press-forming the blank using a first press-forming device for drawing, and a second step for pressing the first intermediate formed product by using a second press-forming device for bend-forming.

A center pillar reinforcement is produced satisfactorily by using a high-tensile material having a low ductility as a blank. The center pillar reinforcement is produced by performing a first step for producing a first intermediate formed product on which a body is partially formed by press-forming the blank using a first press-forming device for drawing, and a second step for pressing the first intermediate formed product by using a second press-forming device for bend-forming.

A method of manufacturing a mechanical part of the present invention includes a first process of forming, by performing a folding processing to an end portion of the material, a portion to be processed having a structure, in which a plurality of layers respectively having a thickness corresponding to a plate thickness of a material overlap each other, in the material such that a plate thickness direction of the layer is orthogonal to a plate thickness direction of the material; and a second process of changing, by performing a forging processing to the portion to be processed, a shape of the portion to be processed to a target shape while press-welding the layers of the portion to be processed to each other by plastic deformation.

An assembly includes an elongated ram body and a punch mounting assembly. The ram body has a reduced length. The punch mounting assembly includes an elongated body having a complementary length. The punch mounting assembly is coupled to the ram body. The assembled punch mounting assembly and ram body have an operational length.

An assembly includes an elongated ram body and a punch mounting assembly. The ram body has a reduced length. The punch mounting assembly includes an elongated body having a complementary length. The punch mounting assembly is coupled to the ram body. The assembled punch mounting assembly and ram body have an operational length.

A can forming machine includes a can body holder in which the can body does not fall at an unexpected time. A knockout unit has a knocking out piston which is disposed to be movable in a depth direction of a recess and is provided to be displaceable between a protruding position at which the knocking out piston protrudes into the recess and an recessed position at which the knocking out piston exits the recess, and a cylinder which supports the knocking out piston to be displaceable. At a discharge position, at which the formed can body is discharged from the recess of the can body holder, a piston displacing unit, which displaces the knocking out piston from the recessed position toward the protruding position, is provided adjacent to the other surface side of the base.