A forming device which expands a metal pipe material to form a metal pipe having a pipe portion and a flange portion includes a hardness lowering portion which lowers a hardness of the flange portion to be lower than a hardness of the pipe portion.

A method of manufacturing a tooth-shaped component including a process of draw-forming a workpiece so as to obtain a cylindrical container, which has a bottom surface portion and a side surface portion; a diameter-reducing process of reducing the diameter of a particular part in which a tooth tip portion is to be formed in the side surface portion of the cylindrical container, so as to increase the thickness of a corner portion such that an external shape of the corner portion between the bottom surface portion and the side surface portion satisfies the following conditional expression (R+H)2t; and a tooth shape-forming process of forming the tooth tip portion in the particular part of the cylindrical container reduced in diameter in the diameter-reducing process, so as to obtain a tooth-shaped component which has the bottom surface portion, the side surface portion, and the tooth tip portion.

A forming method for a vehicle body member may include a tube making process of forming a steel pipe by welding a steel plate coil; a non-circular tube making process of primary preforming the steel pipe formed in the tube making process so as to have a cross section of a predetermined shape; a bending process of bending and secondarily preforming the steel pipe preformed firstly in the non-circular tube making process; and a hot stamping process of heating the secondarily preformed steel pipe, inserting the heated steel pipe into a mold to form a desired shape, and then, quenching the heated steel pipe to form a vehicle body member, thereby easily forming a vehicle body member having high rigidity.

A method of producing a shaped structure support, e.g., for a vehicle, is disclosed. The method includes: heating a hollow workpiece of a steel material to a material transformation temperature range; deforming the hollow workpiece in a press into the shaped structure support having a predefined complex geometry while the hollow workpiece is in the material transformation temperature range; and quenching the hollow workpiece through contact with a press tool of the press to provide the shaped structure support with a martensitic microstructure.

The present disclosure provides a method for manufacturing a middle frame for mobile terminal and a mobile terminal with a middle frame. The method may include: providing a metal plate; forming a number of elongated protrusions arranged in parallel on the plate, the elongated protrusions each extending along a length direction of the metal plate; forming a tubular blank by bending the metal plate such that each of the elongated protrusions extends around the tubular blank; and cutting the tubular blank into a number of annular pieces, wherein each of the annular pieces includes one of the elongated protrusions.

The invention relates to a manufacturing process of aluminum alloy beverage cans by Drawing-Ironing, characterized in that a friction higher between the bodymaker punch and the aluminum sheet than between the ironing die and said aluminum sheet is produced by at least one of the following specificities: An aluminum sheet with an internal surface significantly higher in roughness than the external one Ironing dies with rounded intersections between infeed as well as exit surface and the land, with a smooth surface in the working area and a short width of the land A bodymaker punch with an extra roughness and an isotropic texture. It also relates to a beverage can manufactured by such a process, and characterized in that its reflectance measured at 60 is higher than 73% just after the last ironing step.

A method produces a profiled component. In the method, a profiled structural part is provided and/or manufactured. The profiled structural part is heat-treated and press-hardened in a press hardening tool, wherein the profiled structural part is cooled in its interior by circulating air in the press hardening tool.

The present disclosure provides a method for manufacturing a work piece, such as fasteners or flange nuts. The method produces a work piece with a thickened wall. This can be accomplished using a plurality of successive stamping dies to reduce the diameter of a cup-shaped feature drawn from a blank, and reforming the cup-shaped feature to a formed shape having a thickened wall. A fastener or flange nut with a thickened wall manufactured by stamping and forming is also disclosed.

A method for providing a fluid supply conduit configured to pass through a constrained environment, including providing a circular section tube of appropriate dimensions, die stamping the circular section tube so as to obtain an oblong section tube of oval section, providing a plurality of external stiffeners of hollowed out shape adapted to the external dimensions of the oblong section tube, assembling the external stiffeners around a portion of the section of the oblong section tube.

A method and apparatus for producing a curved tubular segment includes obtaining a curved external tubular element and a curved internal tubular element. The curved internal tubular element is made of a material having a resistance to wear greater than that of the curved external tubular element and has a cross section such as to cover at least part of the internal surface of the curved external tubular element. The curved internal tubular element is inserted inside the curved external tubular element after heating the latter by a heating unit. To form the curved external tubular element on the exact geometry of the curved internal tubular element, a molding unit and a cooling unit are used to obtain a curved tubular segment without spaces between the curved external tubular element and the curved internal tubular element.