Abstract: To provide a panel whose surface rigidity can be improved appropriately in accordance with a load. Provided is a panel including: a load point to which a load is applied from the outside; and a protrusion that protrudes from a surface of the panel and is formed continuously or discontinuously around the load point. The protrusion intersects, at a plurality of positions, each of a plurality of virtual straight lines extending radially from the load point.

Abstract: A pressed component includes an elongated top plate; ridge line portions at both short direction ends of the top plate; and vertical walls that face each other in a state extending from the ridge line portions, and the top plate includes a minimum portion, at which the Vickers hardness value is a minimum value, between one end and another end in the short direction of the top plate, and maximum portions, at which the Vickers hardness value is a maximum value, in each of a first range between the minimum portion and the one end, and a second range between the minimum portion and the other end.

Abstract: In forming a press-formed product that is made of a high-tensile steel sheet having a tensile strength of 390 MPa or more, and has a substantially gutter-shaped cross section and an outward continuous flange, wrinkling in ridges and cracking in the outward continuous flange are reduced. A method for manufacturing a press-formed product that is made of a high-tensile steel sheet of 390 MPa or more, and has a substantially gutter-shaped cross section and an outward continuous flange in at least one end in a predetermined direction includes a first step in which, after a first pad restrains at least a part of a portion to be formed into a gutter bottom in a forming material, a second pad restrains at least a part of the end of portions to be formed into ridges and subsequently carries out press forming.

Abstract: A method for producing a press-formed product includes a first pressing step and a second pressing step. In the first pressing step, an intermediate formed product is formed from a processed material by using first press tooling. The intermediate formed product includes a stepped section of a top plate section, a temporary vertical wall section adjacent to the top plate section via a ridge section and having at least part of the shape of the vertical wall section, and a temporary flange section adjacent to the temporary vertical wall section via a temporary ridge section. In the second pressing step, the press-formed product is formed from the intermediate formed product. In the second pressing step, forming is performed such that the temporary ridge section is moved toward the temporary flange section with at least part of the top plate section of the intermediate formed product restricted.

Abstract: A bumper beam includes a first member, a second member, and an inner plate. The first member includes a top plate section, two vertical wall sections, and two flange sections. The two flange sections connect to the two vertical wall sections, respectively. The second member is plate-shaped, is joined to the two flange sections of the first member, and doses the gap between the two flange sections at least. The inner plate is joined to the two vertical wall sections of the first member and is disposed substantially in parallel with the second member in a space formed by the first member and the second member. Out of the first member and the second member, the second member is disposed facing the outside of a vehicle. Such a bumper beam has high energy absorption efficiency.

Abstract: The objective is to provide a press-molded product including an inward continuous flange and capable of improving performance involved with the bonding strength between a reinforcing member and the other member or the rigidity of a vehicle body without forming a notch in a ridge-portion flange so as to prevent a defect generated during a press-molding process.

Abstract: A manufacturing method for a pressed component of the present disclosure is a manufacturing method for a pressed component configured including an elongated top plate, ridge line portions at both short direction ends of the top plate, and vertical walls that face each other in a state extending from the ridge line portions. A punch and a die are employed to curve a blank into a convex profile bowing from the punch side toward the die side in a state in which the punch is caused to contact a first portion of the blank where the two end ridge line portions are to be formed, and to sandwich a second portion of the blank where the top plate is to be formed between the die and the punch and indent the second portion from the die side toward the punch side.

Abstract: This door inner panel is a door inner panel formed of a metal sheet and includes a first panel portion having a first top sheet portion and a first standing wall portion connected to the first top sheet portion, a second panel portion having a second top sheet portion disposed with a gap with the first top sheet portion of the first panel portion and a second standing wall portion connected to the second top sheet portion, a flange portion connected to the first standing wall portion and the second standing wall portion, and a flat sheet portion disposed between the first panel portion and the second panel portion, the first standing wall portion and the second standing wall portion respectively have a level difference portion, and both ends of the flat sheet portion are integrated with the flange portion or the level difference portions.

Abstract: A method of producing a press-formed product includes a steel plate heating step, a hot forging step and a hot stamping step. In the steel plate heating step, a steel plate is heated to 950° C. or more. In the hot forging step, the heated steel plate is forged to form a varying-thickness steel plate. In the hot stamping step, the heated varying-thickness steel plate is subjected to press-working by a press tooling to form a press-formed product, and the press-formed product that is formed is cooled inside the press tooling. Thus, a press-formed product that has high strength and for which a reduction in weight is possible can be produced.

Abstract: A blank steel plate is planar and used for producing a press-formed product that has an open cross-section including a bent portion. The blank steel plate is homogeneous in its entirety and includes a belt-shaped thick area that has an increased thickness, thin areas that are adjacent to both sides of the thick area and have a thickness smaller than the thickness of the thick area. On the front surface of a front surface and a back face of the blank steel plate, a step height in thickness is formed along one of both side portions of the thick area, and on the back face, a step height a thickness is formed along the other of both side portions of the thick area. By using the blank steel plate in producing the press-formed product, it is possible to optimizing the strength of the press-formed product, and suppress manufacturing costs.

Abstract: This method for manufacturing a panel-like formed article has preparing a blank material made of a metal sheet having a tensile strength of 390 MPa or more and 980 MPa or less; and press-forming the blank material in a cold manner using a pressing apparatus to form the blank material into the panel-like formed article, in the press-forming, a blank holder, a first punch, and a second punch are relatively moved with respect to a die, thereby pressing the first punch and the second punch to the blank material, and pressing of the second punch to the blank material is completed before pressing of the first punch to the blank material.

Abstract: This automobile member has a closed cross section including joint portions in which edge portions of two side walls of an inner panel are joined with edge portions of two side walls of an outer panel, in which in a first region, a first region outer height ho1 and a first region inner height hi1 have a constant value and the difference between the first region outer height ho1 and the first region inner height hi1 is smaller than the difference between a second region outer height ho2 and a second region inner height hi2; in a second region, the second region outer height ho2 has a value which is larger than the second region inner height hi2 and constant, or the second region outer height ho2 has a value which is smaller than the second region inner height hi2 and constant; in a first transition region, a first transition region outer height ho1˜2 is continuously varied between the first region outer height ho1 and the second region outer height ho2, and a first transition region inner height hi1˜2 is contin

Abstract: Provided is a press-molded product capable of improving the bonding strength between a vehicle body reinforcing member and the other member or the rigidity of a vehicle body by enlarging a cross-section of a member to a fullest extent of a design cross-section without forming a notch for preventing a press-molding failure in a ridge-portion flange. A press-molded product is formed by a steel plate having a tensile strength of 340 MPa or more, and includes an inward continuous flange in at least one end portion in a predetermined direction, the inward continuous flange being obtained by continuously forming a ridge-portion flange formed inward in the end portion of the ridge portion, a first flange formed inward in at least a part of an area of the end portion of a first surface portion, and a second flange formed inward in at least a part of an area of the end portion of a second surface portion.

Abstract: A production method includes a placement step, a first pressing step, and a second pressing step. In the placement step, a blank plate is placed in press tooling. In the first pressing step, the blank plate is caused to undergo bend forming in such a way that concave ridges, a concave area, and areas of concave-correspondence vertical wall areas that are areas adjacent to the concave ridges are formed in the blank plate. In the second pressing step, the resultant plate is caused to undergo draw forming in such a way that convex ridges, a convex area, areas of convex-correspondence vertical wall areas that are areas adjacent to the convex ridges are formed in the resultant plate.

Abstract: A method of manufacturing a press-molded article includes: projecting an inner pad, provided at an apex portion of a punch, from the punch toward a side of a die, and disposing a metal sheet blank on the inner pad; and projecting a die pad, provided at the die, from the die toward a side of the punch to dispose the die pad at a position separated from the inner pad by a predetermined distance that is greater than a plate thickness of the metal sheet blank; forming a side walls by moving the die toward the punch side relative to the die pad, the inner pad, and the punch, and integrating the die pad with the die; and forming a top plate by moving the die and the die pad, which have been integrated, and the inner pad, toward the punch side relative to the punch.

Abstract: [Object] To achieve a weight reduction of a car body structure while maintaining collision safety to impacts from the rear side of the vehicle. [Solution] Provided is a vehicle rear portion structure 1 including a pair of rear frames 4 provided in the vehicle length direction and a rear floor panel 2 joined to the pair of rear frames 4, in which the rear floor panel 2 has a concave section 3 provided from the rear side of the vehicle toward the front side of the vehicle of the rear floor panel 2, and the concave section 3 is formed of a metal sheet having a tensile strength more than or equal to the tensile strength of the pair of rear frames 4. By this configuration, when an impact load from the rear side of the vehicle acts on the concave section 3 of the rear floor panel 2, the rear floor panel 2 can absorb collision energy in a principal way.

Abstract: [Object] To achieve a weight reduction of a car body structure while maintaining collision safety to collisions from the front side of the vehicle. [Solution] A vehicle front portion structure 1 according to the present invention includes: a framework member 2 in a gutter shape provided in a vehicle length direction from a front box to a cabin and having a side wall 22; and a dash lower panel 3 that includes a gutter section 4A having a side wall 42 and fitted into an inside of the framework member 2 and in which the side wall 42 of the gutter section 4A and the side wall 22 of the framework member 2 are joined together.

Abstract: An object of the present invention is to provide a panel-like formed product having an excellent collision property. The panel-like formed product (1) includes a polygonal top board (2), two or more vertical walls (5), and a flange (7). The vertical walls (5) extend from two or more sides of the top board (2), and include at least two adjacent vertical walls (5) extending from at least two adjacent sides of the top board (2). The flange (7) connects to lower ends of the vertical walls (5) and spreads in directions in which the top board (2) spreads. The top board (2) includes a frame portion (3) including the two or more sides of the top board from which the vertical walls extend, and a concave portion (4) which is located at an inner side of the frame portion (3) and recedes from the frame portion (3). The two or more adjacent vertical walls (5) include a first vertical wall section (5A), a stair (6), and a second vertical wall section (5B).

Abstract: The following is provided based on the disclosure: a method of producing a molded product: including treating a metal sheet having a bcc structure and a surface that satisfies either of the following conditions (a) or (b); and molding the metal sheet to cause plane strain tensile deformation and biaxial tensile deformation and allowing at least one part of the metal sheet to have a sheet thickness decrease rate of from 10% to 30%: (a) an area fraction of crystal grains having a crystal orientation of 15° or less relative to a (001) plane parallel to a surface of the metal sheet is from 0.20 to 0.35; (b) the area fraction of crystal grains having a crystal orientation of 15° or less relative to a (001) plane parallel to a surface of the metal sheet is 0.45 or less, and the average crystal grain size thereof is 15 ?m or less; or a molded product that satisfies either of the conditions (a) or (b).

Abstract: [Object] To provide a press-molded product including an inward continuous flange and capable of improving performance involved with the bonding strength between a reinforcing member and the other member or the rigidity of a vehicle body without forming a notch in a ridge-portion flange so as to prevent a defect generated during a press-molding process.