A structural member of an integral shaped article using steel sheet having a tensile strength of 590 MPa or more improved in formability, produced using a die or blank holder provided with a space at least at part of a position contacting a blank at the time of pressing it. The structural member comprises a top sheet part including at least one recessed part at an outside edge part in a plan view, a first vertical wall part extending bent from a part or all of an outside edge part including the recessed part in the top sheet part, a first flange part extending bent from an edge of the first vertical wall part at an opposite side to the top sheet part, and a second vertical wall part extending bent from an edge of the top sheet part different from the outside edge part including the recessed part, and at least one projecting part on the top sheet part, the first vertical wall part, or the first flange part.

A structural member of an integral shaped article using steel sheet having a tensile strength of 590 MPa or more improved in formability, produced using a die or blank holder provided with a space at least at part of a position contacting a blank at the time of pressing it. The structural member comprises a top sheet part including at least one recessed part at an outside edge part in a plan view, a first vertical wall part extending bent from a part or all of an outside edge part including the recessed part in the top sheet part, a first flange part extending bent from an edge of the first vertical wall part at an opposite side to the top sheet part, and a second vertical wall part extending bent from an edge of the top sheet part different from the outside edge part including the recessed part, and at least one projecting part on the top sheet part, the first vertical wall part, or the first flange part.

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.

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.

The invention relates to a method, use or a profile for manufacturing metallic flat materials to a cost-effective load-bearing structure of a passenger car and the usage of it. As the main forming manufacturing method the bend forming according to DIN EN ISO 8580 is used.

The invention relates to a method, use or a profile for manufacturing metallic flat materials to a cost-effective load-bearing structure of a passenger car and the usage of it. As the main forming manufacturing method the bend forming according to DIN EN ISO 8580 is used.

An expanded laminate and method of forming an expanded laminate are disclosed. In at least one embodiment, the method includes selectively applying a relatively high temperature-resistant material to a surface of a first metal sheet to form a covered portion and an uncovered portion and diffusion bonding the first metal sheet to a second metal sheet at the uncovered portion to form a bonded region and an unbonded region. Pressurized gas may be introduced between the first and second metal sheets to expand the first and second metal sheets in the unbonded region. The metal sheets may be aluminum sheets. The sheets may be positioned in a die having a plurality of cavities such that when the pressurized gas is introduced the sheets expand into the cavities. The diffusion bonding may be performed by applying pressure, for example, using rollers.

An expanded laminate and method of forming an expanded laminate are disclosed. In at least one embodiment, the method includes selectively applying a relatively high temperature-resistant material to a surface of a first metal sheet to form a covered portion and an uncovered portion and diffusion bonding the first metal sheet to a second metal sheet at the uncovered portion to form a bonded region and an unbonded region. Pressurized gas may be introduced between the first and second metal sheets to expand the first and second metal sheets in the unbonded region. The metal sheets may be aluminum sheets. The sheets may be positioned in a die having a plurality of cavities such that when the pressurized gas is introduced the sheets expand into the cavities. The diffusion bonding may be performed by applying pressure, for example, using rollers.

A hat member 1 includes a top-plate portion 13, first ridges 113, and two side walls 11. The two side walls have a middle hardness Dc of 300 HV or higher. Each of the two side walls 11 includes a softened portion L and a strength-transition portion T adjacent to the softened portion L. The softened portion L has a hardness Dn lower than the middle hardness Dc by at least 8% (DcDn0.08Dc). The strength-transition portion T extends 0.5 mm or longer from the softened portion L toward the first end of the side wall. The strength-transition portion T has a hardness Dt that transitionally changes within the range of 8% to 1% lower than the middle hardness Dc (0.92DcDt0.99Dc). The hat member 1 further includes two second ridges 114 and two flanges 14.

A guide rail of a guidance system for a push element is provided. The guide rail is formed as a hollow profile enclosed by wall sections of the guide rail. The wall sections comprise a horizontal wall section and two side wall sections. The horizontal wall sections extend parallel and perpendicular to a lengthwise extension of the guide rail, and the side wall section extends parallel and perpendicular to the lengthwise extension of the guide rail. The side wall sections are oriented at an angle to the horizontal wall sections. The horizontal wall sections and the two side wall sections, in a cross section perpendicular to a lengthwise extension of the guide rail, form at least for a portion the three side lines of a triangle, wherein the horizontal wall section defines a distal wall of the hollow profile.