Abstract: Before a temperature characteristic of a band gap reference circuit is tested, temperature dependencies of a reference voltage and an absolute temperature proportional voltage for a plurality of samples are measured. When the temperature characteristic is tested, based on a difference ?Vref between the reference voltage of the band gap reference circuit at a predetermined temperature and a median value of the reference voltages of the plurality of samples, a difference ?Vptat between the absolute temperature proportional voltage of the band gap reference circuit at a predetermined temperature and a median value of the absolute temperature proportional voltages of the plurality of samples is calculated.

Abstract: After an inner wall tube, made of steel or alloy containing not less than 2% of Cr, whose outer surface thereof is machined and/or ground to a thickness of 0.1 mm or more including the scale layer, is inserted into an outer wall tube, made of ferritic steel containing not less than 2% of Cr, in which an oxide scale layer containing Cr and having a thickness of 10 to 30 ?m is formed in the inner surface thereof, cold working at an outside diameter reduction rate of 5 to 30% is performed. Similarly cold worked after an inner wall tube having an oxide scale layer on the outer surface thereof, is inserted into an outer wall tube whose inner surface is machined and ground. A double-walled tube made has a uniform gap and an excellent thermal conductivity, and is suitable as materials for SG tubes of future FBR.

Abstract: Provided is a production method including: heating a workpiece at a temperature higher than an Ac1 transformation point in a carburizing atmosphere; slowly cooling the workpiece at not more than 70° C./Hr down to a temperature T satisfying Formula (1) while maintaining the carburizing atmosphere: Ar1?20?T(° C.)?300° C. . . . (1); and cooling the workpiece in an oxidizing atmosphere. According to this method, it is possible to efficiently produce a high-carbon chromium bearing steel whose depth of the recarburized layer or the overcarburized layer is within a range from 0 to 0.2 mm, having less machining allowance, and excellent in machinability, using a steel tube after hot tube-making.

Abstract: A rewritable recording material can be provided which contains at least one kind of phenolic compounds represented by formula (I) and which is capable of stably repeating coloring and discoloring for a long period of time as well as exerting superior storage properties such as heat resistance and moisture and heat resistance of the colored image and light resistance of the background. Also provided are a composition for forming a rewritable color-forming layer which is capable of forming a color-forming layer of the recording material, and a composition of a color-developing agent for a rewritable recording material.

Abstract: There is provided a method for straightening a steel product, comprising using hard alloy straightening rolls each made of a tungsten carbide-cobalt (WC—Co) based sintered material (hard metal), wherein the hardness of each roll is HRA85 to 87. According to this straightening method, when bends of steel product are straightened, roll wear is suppressed, defective roll mark(s) caused by the roll wear is prevented from being formed on the surface of the product being straightened, and time for changeover and/or setup of rolls is shortened to enhance the operation rate of the straightening machine, whereby the efficiency of a finishing process and, in turn, the productivity can be improved. Therefore, this method is especially effective in the case where a product to be straightened is a high-strength product such as a steel pipe for a motor vehicle air bag.

Abstract: Provided is a production method including: heating a workpiece at a temperature higher than an Ac1 transformation point in a carburizing atmosphere; slowly cooling the workpiece at not more than 70° C./Hr down to a temperature T satisfying Formula (1) while maintaining the carburizing atmosphere: Ar1?20?T(° C.)?300° C. . . . (1); and cooling the workpiece in an oxidizing atmosphere. According to this method, it is possible to efficiently produce a high-carbon chromium bearing steel whose depth of the recarburized layer or the overcarburized layer is within a range from 0 to 0.2 mm, having less machining allowance, and excellent in machinability, using a steel tube after hot tube-making.

Abstract: Provided is a recording material with a superior heat resistance and having a low content of a dihydroxydiphenylsulfone derivative, and a color-developing composition for producing the recording material. With the use of this color-developing composition, a recording material with a superior heat resistance at the background part can be provided and the content of a dihydroxydiphenylsulfone derivative, such as 4,4?-dihydroxydiphenylsulfone, in the color-developing composition can be reduced to 2% by mass or less, or further to 1% by mass or less.

Abstract: A rewritable recording material can be provided which contains at least one kind of phenolic compounds represented by formula (I) and which is capable of stably repeating coloring and discoloring for a long period of time as well as exerting superior storage properties such as heat resistance and moisture and heat resistance of the colored image and light resistance of the background. Also provided are a composition for forming a rewritable color-forming layer which is capable of forming a color-forming layer of the recording material, and a composition of a color-developing agent for a rewritable recording material.

Abstract: Provided is a recording material with a superior storage property for the background and image, particularly with a remarkable superiority in any of light resistance of the background, and light, moisture and heat resistance of the image. The recording material contains a phenolic compound represented by formula (I) [wherein R1-R3 each independently represent a hydrogen atom or C1-C4 alkyl group; R5 represents a hydrogen atom, C1-C4 alkyl group or C1-C4 alkoxy group, with the proviso that when R5 is a hydrogen atom, R4 is a C1-C4 alkyl group, when R5 is a C1-C4 alkyl group, R4 is a hydrogen atom, and when R5 is a C1-C4 alkoxy group, R4 is a C1-C4 alkoxy group].

Abstract: Provided is a color-developing composition for recording materials having a superior heat resistance. The color-developing composition is a reaction composition containing a mixture of compounds represented by formula (III) obtained by reacting a dihydroxydiphenylsulfone derivative represented by formula (I) with a dihalide represented by formula (II) X—Y—X (II), wherein, in a composition where the content of a compound with n=1 in said reaction composition is from 5 to 80% by mass of the total solid content of the composition, at least 10% by mass of the compound with n=1 is a crystalline material.

Abstract: After an inner wall tube, made of steel or alloy containing not less than 2% of Cr, whose outer surface thereof is machined and/or ground to a thickness of 0.1 mm or more including the scale layer, is inserted into an outer wall tube, made of ferritic steel containing not less than 2% of Cr, in which an oxide scale layer containing Cr and having a thickness of 10 to 30 ?m is formed in the inner surface thereof , cold working at an outside diameter reduction rate of 5 to 30% is performed. Similarly cold worked after an inner wall tube having an oxide scale layer on the outer surface thereof, is inserted into an outer wall tube whose inner surface is machined and ground. A double-walled tube made has a uniform gap and an excellent thermal conductivity, and is suitable as materials for SG tubes of future FBR.

Abstract: A high-temperature material transferring member including a coating film formed on a surface of base metal, wherein the coating film is a composite coating film using a mixed powder made up of: a Co-based alloy powder containing, in mass %, 0.03 to 0.6% of C, 0.2 to 3% of Si, 22 to 35% of Cr, and more than 50% of Co; and a Cr carbide powder, the composite coating film is formed by the plasma powder overlaying process. The high-temperature material transferring member has excellent build-up resistance particularly in a gas atmosphere of 1100° C. or more. The high-temperature material transferring member has excellent in build-up resistance, oxidation resistance, and heat cracking resistance.

Abstract: Provided is a recording material with a superior storage property for the background and image, particularly with a remarkable superiority in any of light resistance of the background, and light, moisture and heat resistance of the image. The recording material contains a phenolic compound represented by formula (I) [wherein R1-R3 each independently represent a hydrogen atom or C1-C4 alkyl group; R5 represents a hydrogen atom, C1-C4 alkyl group or C1-C4 alkoxy group, with the proviso that when R5 is a hydrogen atom, R4 is a C1-C4 alkyl group, when R5 is a C1-C4 alkyl group, R4 is a hydrogen atom, and when R5 is a C1-C4 alkoxy group, R4 is a C1-C4 alkoxy group].

Abstract: A plug 1 includes a first columnar portion 20, a tapered portion 30, and a second columnar portion 40. The first columnar portion 20 has an outside diameter D1. The second columnar portion 40 has an outside diameter D2 which is larger than the outside diameter D1. The tapered portion 30 is formed between the first columnar portion 20 and the second columnar portion 40. The tapered portion 30 has a tapered surface 31 provided with an outside diameter which is gradually increased from the first columnar portion 20 to the second columnar portion 40, and an axial direction length L. The outside diameters D1 and D2, and the axial direction length L meet the following expressions (1) to (4): 0.25???2.00??(1), 0.06?L/D2?0.8??(2), L/D2?0.3×?+0.575??(3), and L/D2?0.1×???(4) where ?=(D2?D1)/D1×100. Therefore, the cold drawing plug according to the present invention can reduce the tensile residual stress on the outer surface of a metal pipe after the cold drawing.

Abstract: A transparent component locally includes one or both of a plurality of thick parts that have a large thickness in the vertical direction, and a plurality of thin parts that have a small thickness in the vertical direction. A component recognition camera captures an image of the transparent component held by a mount head, from above or below the transparent component, while a single spotlight or a plurality of spotlights are being irradiated onto the transparent component.

Abstract: A rewritable recording material can be provided which contains at least one kind of phenolic compounds represented by formula (I) and which is capable of stably repeating coloring and discoloring for a long period of time as well as exerting superior storage properties such as heat resistance and moisture and heat resistance of the colored image and light resistance of the background. Also provided are a composition for forming a rewritable color-forming layer which is capable of forming a color-forming layer of the recording material, and a composition of a color-developing agent for a rewritable recording material.

Abstract: Provided is a recording material with a superior heat resistance and having a low content of a dihydroxydiphenylsulfone derivative, and a color-developing composition for producing the recording material. With the use of this color-developing composition, a recording material with a superior heat resistance at the background part can be provided and the content of a dihydroxydiphenylsulfone derivative, such as 4,4?-dihydroxydiphenylsulfone, in the color-developing composition can be reduced to 2% by mass or less, or further to 1% by mass or less.

Abstract: Provided is a color-developing composition for recording materials having a superior heat resistance. The color-developing composition is a reaction composition containing a mixture of compounds represented by formula (III) obtained by reacting a dihydroxydiphenylsulfone derivative represented by formula (I) with a dihalide represented by formula (II) X-Y-X (II), wherein, in a composition where the content of a compound with n=1 in said reaction composition is from 5 to 80% by mass of the total solid content of the composition, at least 10% by mass of the compound with n=1 is a crystalline material.

Abstract: A plug 1 includes a first columnar portion 20, a tapered portion 30, and a second columnar portion 40. The first columnar portion 20 has an outside diameter D1. The second columnar portion 40 has an outside diameter D2 which is larger than the outside diameter D1. The tapered portion 30 is formed between the first columnar portion 20 and the second columnar portion 40. The tapered portion 30 has a tapered surface 31 provided with an outside diameter which is gradually increased from the first columnar portion 20 to the second columnar portion 40, and an axial direction length L. The outside diameters D1 and D2, and the axial direction length L meet the following expressions (1) to (4): 0.25???2.00??(1), 0.06?L/D2?0.8??(2), L/D2?0.3×?+0.575??(3), and L/D2?0.1×???(4) where ?=(D2?D1)/D1×100. Therefore, the cold drawing plug according to the present invention can reduce the tensile residual stress on the outer surface of a metal pipe after the cold drawing.

Abstract: The present invention provides a composition and a recording material made from the composition having an excellent dynamic sensitivity in recording as well as an excellent image stability and, particularly, having excellent resistance for heat and humidity, heat, light, plasticizer and water. The composition and the recording material include the following compounds (1), (2), and (3): wherein R1, R2, R6, R7, R11, and R12 each represents hydrogen or an alkyl group; a1 to a3 each represents an integer of 1-6; n1 to n3 each represents 0, 1 or 2; m1, m4 and m7 each represents 0, 1, 2 or 3; R3, R4, R8, R9, R13 and R14 each represents an alkyl group; m2, m3, m5, m6, m8 and m9 each represents 0, 1 or 2; and Y1 to Y3 each represents CO or NRCO (R represents hydrogen, etc.).