Abstract: In a frame member, the hardness of a sheet-thickness-direction central section in a portion where a softening layer is provided is greater than or equal to 400 Hv, the softening layer has hardness smaller by at least 10 Hv than the hardness of the sheet-thickness-direction central section in the portion where the softening layer is provided, the thickness of the softening layer is greater than or equal to 2% of the sheet thickness but smaller than 20% of the sheet thickness, the hardness of the softening layer at the surface is greater than or equal to 0.5 times the hardness of the sheet-thickness-direction central section but smaller than 0.

Abstract: The frame member has a flat sheet portion with a recessed portion having a pair of wall portions and a bottom portion extending between tip portions in an extending direction of the pair of wall portions, in which a Vickers hardness of a region of the flat sheet portion excluding the recessed portion is 330 Hv or more, a depth of the recessed portion is 5 mm or more, when a width of the recessed portion is L0 and a cross-sectional length of an inner peripheral wall of the recessed portion consisting of the pair of wall portions and the bottom portion is L1, a value of (L1?L0)/L0 is 0.18 or more and 2.8 or less, and a Vickers hardness of a ridgeline portion extending between the flat sheet portion and the recessed portion is 1.06 times or more and 1.20 times or less the Vickers hardness of the region of the flat sheet portion excluding the recessed portion.

Abstract: This frame member includes a corner section extending along the longitudinal direction; a first wall section extending from an end portion of the corner section in a direction orthogonal to the longitudinal direction; and a second wall section extending from an opposite end portion of the corner section, wherein the corner section is formed with a deformation starting portion from which a deformation starts when a load is input to the frame member in the longitudinal direction, the deformation starting portion having a shape protruding to an inner bending side or an outer bending side of the corner section, and an average hardness value H(K1) at a first region is equal to or greater than 330 Hv in Vickers hardness, and a 3-sigma range of a standard deviation ? in a frequency distribution of the hardness at the first region is equal to or greater than 60, the first region being located at a portion outwardly apart from an end portion of the deformation starting portion in the longitudinal direction by 10 mm in

Abstract: This vehicle body structure includes a frame member with a first top section, a corner section, a vertical wall section, and a second top section, and a first support section and a second support section provided at the second top section. L/h?6.7 is satisfied where the h represents a length between an outer surface of the first top section and an outer surface of the second top section, and the L represents a length between the first support section and the second support section.

Abstract: The frame member has a flat sheet portion with a recessed portion having a pair of wall portions and a bottom portion extending between tip portions in an extending direction of the pair of wall portions, in which a Vickers hardness of a region of the flat sheet portion excluding the recessed portion is 330 Hv or more, a depth of the recessed portion is 5 mm or more, when a width of the recessed portion is L0 and a cross-sectional length of an inner peripheral wall of the recessed portion consisting of the pair of wall portions and the bottom portion is L1, a value of (L1?L0)/L0 is 0.18 or more and 2.8 or less, and a Vickers hardness of a ridgeline portion extending between the flat sheet portion and the recessed portion is 1.06 times or more and 1.20 times or less the Vickers hardness of the region of the flat sheet portion excluding the recessed portion.

Abstract: In a frame member, the hardness of a sheet-thickness-direction central section in a portion where a softening layer is provided is greater than or equal to 400 Hv, the softening layer has hardness smaller by at least 10 Hv than the hardness of the sheet-thickness-direction central section in the portion where the softening layer is provided, the thickness of the softening layer is greater than or equal to 2% of the sheet thickness but smaller than 20% of the sheet thickness, the hardness of the softening layer at the surface is greater than or equal to 0.5 times the hardness of the sheet-thickness-direction central section but smaller than 0.

Abstract: A reading apparatus includes a storage configured to store data in the storage, a reader configured to optically read a medium, and a processor configured to, in response to the reading of the medium by the reader, acquire a set of read data based on the result of the reading, generate an image file based on the acquired set of read data, and allow the storage to store in itself the generated image file. Further, the processor includes the function of, when generating the image file, generating a plurality of image files resulting from a division that allows the file size of each of the plurality of image files to be smaller than a size upper limit, and of allowing the storage to store in itself the generated plurality of image files in a state in which the plurality of image files are associated with one another.

Abstract: A heat treatment apparatus of one aspect of the present disclosure includes: a feed device that feeds a heat treatment workpiece downstream in a feed direction along a heat treatment workpiece pass-line; a heating device that includes a heating coil disposed downstream of the feed device in the feed direction and encircling the pass-line; a cooling device that is disposed adjacent to the heating coil, downstream of the heating coil in the feed direction, and encircling the pass-line; and a gas supply device that is disposed upstream of the heating coil in the feed direction, directly connected to the heating coil and encircling the pass-line, and that includes a plurality of gas compartments configured by internally partitioning the gas supply device in the feed direction.

Abstract: A manufacturing method for a bent member of the present invention includes a holding step of holding one end portion of a long steel material having an opening end in a longitudinal direction by a chuck, a feeding step of feeding the steel material in the longitudinal direction with the one end portion as a head after the holding step, a heating step of performing high-frequency induction heating on a portion of the steel material in the longitudinal direction to form a heated portion, a bending step of moving the chuck in a three-dimensional direction to apply a bending moment to the heated portion, and a cooling step of injecting a cooling medium to the heated portion to cool the heated portion after the bending step.

Abstract: A metal pipe having a thickened end portion, the metal pipe includes: when viewed in a longitudinal direction of the metal pipe, a thin portion which has a thickness t0; a first thickened portion which is provided on one end and has a thickness T which is larger than the thickness t0; and a first taper portion which is provided between the thin portion and the first thickened portion and has the thickness which gradually increases from t0 to T; when a hardness of an inner surface of the first thickened portion is measured in a circumferential direction and the hardness is plotted with respect to a position in the circumferential direction, in which a waveform representing a high hardness portion having a hardness which is 95% or more of a maximum hardness in the circumferential direction and a waveform representing a low hardness portion having a hardness which is less than 95% of the maximum hardness alternately appear, and a plurality of combinations of the waveform representing the high hardness portion an

Abstract: A method for manufacturing a bent member, the method includes feeding an elongated steel material in a longitudinal direction with one end portion of the steel material as a head, performing high-frequency induction heating to one portion of the steel material in the longitudinal direction by being supplied high-frequency power to form a high-temperature portion, bending the steel material by applying a bending moment in an arbitrary direction to the high-temperature portion to form a bent portion, and injecting a cooling medium to the bent portion to cool the bent portion.

Abstract: A heat treatment apparatus of one aspect of the present disclosure includes: a feed device that feeds a heat treatment workpiece downstream in a feed direction along a heat treatment workpiece pass-line; a heating device that includes a heating coil disposed downstream of the feed device in the feed direction and encircling the pass-line; a cooling device that is disposed adjacent to the heating coil, downstream of the heating coil in the feed direction, and encircling the pass-line; and a gas supply device that is disposed upstream of the heating coil in the feed direction, directly connected to the heating coil and encircling the pass-line, and that includes a plurality of gas compartments configured by internally partitioning the gas supply device in the feed direction.

Abstract: A method for manufacturing a tubular member has: a step of disposing a steel pipe which is a material in an outer the having an inner surface having the same shape as an outer form of the tubular member with at least a part of the steel pipe being separated from the inner surface; and a step of compressing the steel pipe in the axial direction by decreasing a relative distance between a pair of pressurizing dies that respectively abut both end surfaces of the steel pipe in the axial direction in a state where a core the portion having an outer surface shape that is the same as inner surface shapes of the both end portions of the tubular member in the axial direction is inserted between the pair of pressurizing dies with at least a pan of the core the portion being separated from the inner surface of the steel pipe.

Abstract: A reading apparatus includes a storage configured to store data in the storage, a reader configured to optically read a medium, and a processor configured to, in response to the reading of the medium by the reader, acquire a set of read data based on the result of the reading, generate an image file based on the acquired set of read data, and allow the storage to store in itself the generated image file. Further, the processor includes the function of, when generating the image file, generating a plurality of image files resulting from a division that allows the file size of each of the plurality of image files to be smaller than a size upper limit, and of allowing the storage to store in itself the generated plurality of image files in a state in which the plurality of image files are associated with one another.

Abstract: Provided is a high frequency induction heating apparatus capable of quenching a workpiece having an outward flange, over the whole circumference by means of a frequency with which a penetration depth of an electromagnetic wave is larger than a sheet thickness of the workpiece The high frequency induction heating apparatus includes a high frequency induction heating coil used for heating a long hollow steel workpiece having a closed cross section and an outward flange, in 3DQ in which a bending member is manufactured from the workpiece The high frequency induction heating coil includes a magnetic material core facing each other between which both faces of the outward flange are interposed, having a distance from both faces, and an induction heating coil connected to the magnetic material core and arranged surrounding an outer circumference of a general portion where the outward flange is excluded from the workpiece.

Abstract: A metal pipe having a thickened end portion, the metal pipe includes: when viewed in a longitudinal direction of the metal pipe, a thin portion which has a thickness t0; a first thickened portion which is provided on one end and has a thickness T which is larger than the thickness t0; and a first taper portion which is provided between the thin portion and the first thickened portion and has the thickness which gradually increases from t0 to T; when a hardness of an inner surface of the first thickened portion is measured in a circumferential direction and the hardness is plotted with respect to a position in the circumferential direction, in which a waveform representing a high hardness portion having a hardness which is 95% or more of a maximum hardness in the circumferential direction and a waveform representing a low hardness portion having a hardness which is less than 95% of the maximum hardness alternately appear, and a plurality of combinations of the waveform representing the high hardness portion an

Abstract: A method for manufacturing a bent member, the method includes feeding an elongated steel material in a longitudinal direction with one end portion of the steel material as a head, performing high-frequency induction heating to one portion of the steel material in the longitudinal direction by being supplied high-frequency power to form a high-temperature portion, bending the steel material by applying a bending moment in an arbitrary direction to the high-temperature portion to form a bent portion, and injecting a cooling medium to the bent portion to cool the bent portion.

Abstract: A manufacturing method for a bent member of the present invention includes a holding step of holding one end portion of a long steel material having an opening end in a longitudinal direction by a chuck, a feeding step of feeding the steel material in the longitudinal direction with the one end portion as a head after the holding step, a heating step of performing high-frequency induction heating on a portion of the steel material in the longitudinal direction to form a heated portion, a bending step of moving the chuck in a three-dimensional direction to apply a bending moment to the heated portion, and a cooling step of injecting a cooling medium to the heated portion to cool the heated portion after the bending step.

Abstract: A printer includes a storage unit that spools print jobs, a print job sorting unit that sorts the spooled print jobs into a processing order, and a printing unit that performs printing on a paper roll in response to the print jobs in the sorted processing order. The print job sorting unit sorts the print jobs into a processing order based on medium attributes of the paper roll supplied to the printing unit and medium attributes which are requested in the print job.

Abstract: Provided is a high frequency induction heating apparatus capable of quenching a workpiece having an outward flange, over the whole circumference by means of a frequency with which a penetration depth of an electromagnetic wave is larger than a sheet thickness of the workpiece. The high frequency induction heating apparatus includes a high frequency induction heating coil used for heating a long hollow steel workpiece having a closed cross section and an outward flange, in 3DQ in which a bending member is manufactured from the workpiece. The high frequency induction heating coil includes a magnetic material core facing each other between which both faces of the outward flange are interposed, having a distance from both faces, and an induction heating coil connected to the magnetic material core and arranged surrounding an outer circumference of a general portion where the outward flange is excluded from the workpiece.