Abstract: A method for manufacturing a forged article, capable of improving the durability of a die for forging is provided. The method, includes forging a steel material, by using a die, by spraying or applying a water-soluble polymer lubricant containing 0.01 to 0.98 mass % of a water-soluble sulfate onto a working surface of the die, the die being made of a raw material having a constituent composition of by mass %, of 0.4 to 0.7% of C, 1.0% or less of Si, 1.0% or less of Mn, 4.0 to 6.0% of Cr, 2.0 to 4.0% of (Mo+½W), 0.5 to 2.5% of (V+Nb), 0 to 1.0% of Ni, 0 to 5.0% of Co, 0.02% or less of N, and a remnant composed of Fe and impurities, and having hardness of 55 to 60 HRC, and the die including a nitrided layer or a nitrosulfidized layer on the working surface thereof.

Abstract: The workload in creating a document for reporting a construction status is reduced. A task support apparatus includes a first acquiring unit configured to acquire a plurality of captured images associated with pieces of attribute information from a terminal device configured to associate the captured images with the pieces of attribute information; a second acquiring unit configured to acquire an insertion rule and/or a description rule of a document for reporting a construction status; and a generating unit configured to generate image information based on the pieces of attribute information, associated with the plurality of captured images acquired by the first acquiring unit, and the insertion rule and/or the description rule acquired by the second acquiring unit. The pieces of attribute information each include a construction detail and a photographing timing.

Abstract: A terminal device and a program that can reduce the operation load at a construction site, are provided. The terminal device is configured to capture an image of a construction status of a device installed at a plurality of locations, the terminal device including an imaging unit configured to capture the image of an imaging target; an imaging instruction acquiring unit configured to acquire an imaging instruction given by a user to the imaging unit; a display unit configured to display candidates of each of a plurality of kinds of construction target information to be associated with the image that the user is to capture; and a selecting unit configured to select, according to the user's instruction, a candidate from among the candidates of each of the plurality of kinds of the construction target information displayed on the display unit, wherein when the candidate is selected at the selecting unit, a candidate linked to the selected candidate is displayed on the display unit.

Abstract: A terminal device and a program that can reduce the operation load at a construction site, are provided. The terminal device is configured to capture an image of a construction status of a device installed at a plurality of locations, the terminal device including an imaging unit configured to capture the image of an imaging target; an imaging instruction acquiring unit configured to acquire an imaging instruction given by a user to the imaging unit; a display unit configured to display candidates of each of a plurality of kinds of construction target information to be associated with the image that the user is to capture; and a selecting unit configured to select, according to the user's instruction, a candidate from among the candidates of each of the plurality of kinds of the construction target information displayed on the display unit, wherein when the candidate is selected at the selecting unit, a candidate linked to the selected candidate is displayed on the display unit.

Abstract: The workload in creating a document for reporting a construction status is reduced. A task support apparatus includes a first acquiring unit configured to acquire a plurality of captured images associated with pieces of attribute information from a terminal device configured to associate the captured images with the pieces of attribute information; a second acquiring unit configured to acquire an insertion rule and/or a description rule of a document for reporting a construction status; and a generating unit configured to generate image information based on the pieces of attribute information, associated with the plurality of captured images acquired by the first acquiring unit, and the insertion rule and/or the description rule acquired by the second acquiring unit. The pieces of attribute information each include a construction detail and a photographing timing.

Abstract: A coated mold which can exhibit good sliding properties, and has further reduced droplets and excellent durability. The coated mold has a hard coating on a work surface, the hard coating including layer A in which layer a1 and layer a2 are alternately laminated, wherein the layer a1 is composed of a Cr-based nitride and has a thickness of 100 nm or less, and the layer a2 is composed of a nitride or carbonitride of (V1-aMa) (M is at least one selected from Mo and W), has an atomic ratio a of M to the sum of V and M of 0.05 or more and 0.45 or less, and has a thickness of 80 nm or less. Also: a method for manufacturing a coated mold; and a hard coat-forming target which can be used in the method for manufacturing a coated mold.

Abstract: A coated die for use in hot stamping has a hard film having an alternating lamination section formed by alternating lamination of a1 layers consisting of nitride having 30% or more of chromium in atomic ratio in a metal part, and a2 layers consisting of nitride having 50% or more of vanadium in atomic ratio in a metal part. When ta1 and ta2 are defined as thicknesses of the a1 layer and the a2 layer respectively, a film thickness ratio Xb is defined as a film thickness ratio ta2/ta1 of a1 layers and a2 layers adjacent to each other in a substrate-side region of the alternating lamination section and a film thickness ratio Xt is defined as a film thickness ratio ta2/ta1 of a1 layers and a2 layers adjacent to each other in an outermost surface side region of the alternating lamination section, it holds that Xt>Xb.

Abstract: A method for manufacturing a forged article, capable of improving the durability of a die for forging is provided. The method, includes forging a steel material by using a die, by spraying or applying a water-soluble polymer lubricant containing 0.01 to 0.98 mass % of a water-soluble sulfate onto a working surface of the die, the die being made of a raw material having a constituent composition of by mass %, of 0.4 to 0.7% of C, 1.0% or less of Si, 1.0% or less of Mn, 4.0 to 6.0% of Cr, 2.0 to 4.0% of (Mo+½W), 0.5 to 2.5% of (V+Nb), 0 to 1.0% of Ni, 0 to 5.0% of Co, 0.02% or less of N, and a remnant composed of Fe and impurities, and having hardness of 55 to 60 HRC, and the die including a nitrided layer or a nitrosulfidized layer on the working surface thereof.

Abstract: Provided are: a cold work tool having excellent wear resistance; and a method for manufacturing the cold work tool. A cold work tool which has an ingredient composition that can be prepared into a martensite structure by quenching and which has a martensite structure, wherein the hardness of the cold work tool is 58 HRC or more, the area ratio of a carbide having an equivalent circle diameter of 5 ?m or more in the cross-sectional structure of the cold work tool is 4.0% by area or more, and the carbon solid solution fraction, which is expressed by the ratio of the mass ratio of the amount of carbon that is present in the form of a solid solution in the structure of the cold work tool to the mass ratio of the amount of carbon that is contained in the whole of the cold work tool, is 75.0% or more. A method for manufacturing a cold work tool, which is suitable for manufacturing the aforementioned cold work tool.

Abstract: Provided are a cold working tool material with which high hardness can be obtained in a broad range of tempering temperatures, and a cold working tool manufacturing method using same. The present invention is a cold working tool material comprising a steel component composition that contains, in mass %, C: 0.65-2.40%, Cr: 5.0-15.0%, Mo and W alone or combined (Mo+½W): 0.50-4.00%, V: 0.10-1.50%, and N: greater than 0.0300% to 0.0800%, in which martensitic structure can be adjusted by quenching, and in which, in a 90 ?m long 90 ?m wide region of a cross-sectional structure that does not contain carbides with equivalent circle diameters exceeding 5.0 ?m, the number density of carbides A with equivalent circle diameters greater than 0.1 ?m to 2.0 ?m is at least 9.0×105/mm2 and the number density of carbides B with equivalent circle diameters greater than 0.1 ?m to 0.4 ?m is at least 7.5×105/mm2.

Abstract: Provided is a cold work tool material capable of reducing dimensional changes which occur, due to heat treatment, in the longitudinal direction of the material during quenching and tempering. This cold work tool material is drawn through hot working, has an annealed structure including carbides, and is used after being quenched and tempered, wherein, in the annealed structure which is formed in a cross section parallel to a drawing direction due to the hot working of the cold work tool material, the standard deviation in the degree of orientation of carbides Oc, as determined by equation (1) below, is 6.0 or more for carbides having a circle equivalent diameter of 5.0 ?m or greater as observed in the annealed structure in the cross section at right angle to a direction perpendicular to the drawing direction. Oc=D×? . . .

Abstract: Provided are a cold working tool material with which high hardness can be obtained in a broad range of tempering temperatures, and a cold working tool manufacturing method using same. The present invention is a cold working tool material comprising a steel component composition that contains, in mass %, C: 0.65-2.40%, Cr: 5.0-15.0%, Mo and W alone or combined (Mo+½W): 0.50-4.00%, V: 0.10-1.50%, and N: greater than 0.0300% to 0.0800%, in which martensitic structure can be adjusted by quenching, and in which, in a 90 ?m long 90 ?m wide region of a cross-sectional structure that does not contain carbides with equivalent circle diameters exceeding 5.0 ?m, the number density of carbides A with equivalent circle diameters greater than 0.1 ?m to 2.0 ?m is at least 9.0×105/mm2 and the number density of carbides B with equivalent circle diameters greater than 0.1 ?m to 0.4 ?m is at least 7.5×105/mm2.

Abstract: A cold work tool material has an annealed structure including carbides, and a composition including, in mass %, C: 0.80% to 2.40%, Cr: 5.0% to 15.0%, Mo and W contained alone or in combination in an amount of (Mo+½W): 0.50% to 3.00%, and V: 0.10 to 1.50%, and adjusted such that the material has a martensitic structure by quenching. The material includes a cross sectional region of an annealed structure and a length of 90 ?m and a width of 90 ?m and including no carbides having a circle equivalent diameter exceeding 5.0 ?m. In the cross sectional region, a proportion of a number of carbides B having a circle equivalent diameter of more than 0.1 ?m and not more than 0.4 ?m to a number of carbides A having a circle equivalent diameter of exceeds 0.1 ?m and not more than 2.0 ?m is greater than 80.0%.

Abstract: Provided are: a cold work tool having excellent wear resistance; and a method for manufacturing the cold work tool. A cold work tool which has an ingredient composition that can be prepared into a martensite structure by quenching and which has a martensite structure, wherein the hardness of the cold work tool is 58 HRC or more, the area ratio of a carbide having an equivalent circle diameter of 5 ?m or more in the cross-sectional structure of the cold work tool is 4.0% by area or more, and the carbon solid solution fraction, which is expressed by the ratio of the mass ratio of the amount of carbon that is present in the form of a solid solution in the structure of the cold work tool to the mass ratio of the amount of carbon that is contained in the whole of the cold work tool, is 75.0% or more. A method for manufacturing a cold work tool, which is suitable for manufacturing the aforementioned cold work tool.

Abstract: Provided is a cold work tool material capable of reducing dimensional changes which occur, due to heat treatment, in the longitudinal direction of the material during quenching and tempering. This cold work tool material is drawn through hot working, has an annealed structure including carbides, and is used after being quenched and tempered, wherein, in the annealed structure which is formed in a cross section parallel to a drawing direction due to the hot working of the cold work tool material, the standard deviation in the degree of orientation of carbides Oc, as determined by equation (1) below, is 6.0 or more for carbides having a circle equivalent diameter of 5.0 ?m or greater as observed in the annealed structure in the cross section at right angle to a direction perpendicular to the drawing direction. Oc=D×? . . .

Abstract: A cold work tool material has an annealed structure including carbides, and a composition including, in mass %, C: 0.80% to 2.40%, Cr: 5.0% to 15.0%, Mo and W contained alone or in combination in an amount of (Mo+½W): 0.50% to 3.00%, and V: 0.10 to 1.50%, and adjusted such that the material has a martensitic structure by quenching. The material includes a cross sectional region of an annealed structure and a length of 90 ?m and a width of 90 ?m and including no carbides having a circle equivalent diameter exceeding 5.0 ?m. In the cross sectional region, a proportion of a number of carbides B having a circle equivalent diameter of more than 0.1 ?m and not more than 0.4 ?m to a number of carbides A having a circle equivalent diameter of exceeds 0.1 ?m and not more than 2.0 ?m is greater than 80.0%.