Abstract:
A temperature regulator or the like that can circulate a desired thermal medium and efficiently transfer the heat of the thermal medium is provided. The temperature regulator includes a pipe 20 that is made of a metal or alloy with corrosion resistance to a predetermined thermal medium and that serves as a flow path for circulating the thermal medium; and a plate 10 in which the pipe 20 is buried, wherein the plate 10 is formed by accelerating powder made of aluminum (Al) or alloy together with a gas and thereafter spraying the powder remaining in a solid phase toward the pipe 20 so that the powder is deposited on the pipe 20.
Abstract:
A stainless steel spring with excellent corrosion resistance and fatigue strength is provided by performing: a process of drawing a steel wire at a specific degree of drawing ε, the steel wire containing, in percentage by mass, C in an amount of 0.08% or lower, Si in an amount of 0.3% to 2.0%, Mn in an amount of 3.0% or lower, Ni in an amount of 8.0% to 10.5%, Cr in an amount of 16.0% to 22.0%, Mo in an amount of 0.5% to 3.0%, and N in an amount of 0.15% to 0.23%, with a remainder being made up of Fe and impurities; a process of obtaining a coiled steel wire; a process of heat treatment at from 500°C to 600°C, and from 20 minutes to 40 minutes; a process of nitriding to form a nitride layer having a thickness of from 40 µm to 60 µm on a surface of the steel wire; a process of shot peening; and a process of heat treatment.
Abstract:
A vertical motion impeller-type shot peening device (50) performs a second shot peening to a coil spring (10) including first shot peening indentations (20). The vertical motion impeller-type shot peening device (50) includes a workpiece holding mechanism (52) including a lower end turn support (84, 85) and an upper end turn support (95, 96), a stress applying mechanism (90) which compresses the coil spring (10), a rotation mechanism (100) which allows the coil spring (10) to rotate around the vertical axis, and a projection mechanism (57) which includes a pair of vertically movable impeller units (55, 56). A first rough surface (21) including first shot peening indentations (20) is formed on a part of end turn portions (10a, 10b) of the coil spring (10). A second rough surface (31) including second shot peening indentations (30) is formed on the entire surface of wire (11) except for the first rough surface (21).
Abstract:
A suspension arm member includes a connecting portion configured to connect plural members of a suspension, and a support bar extending and provided with the connecting portion at each end. The support bar is made of a resin material and includes plural lightening hole portions each formed in a shape of a recessed portion. The lightening hole portions include plural front upper lightening hole portions (11) formed in a front upper portion of the support bar, plural front lower lightening hole portions formed in a front lower portion of the support bar, plural rear upper lightening hole portions formed in a rear upper portion of the support bar, and plural rear lower lightening hole portions formed in a rear lower portion of the support bar.
Abstract:
To provide a coil spring having excellent fatigue resistance. Disclosed is a coil spring made of steel, including (in % by mass, the same shall apply for a chemical composition): C: 0.40 to 0.70%; Si: 1.50 to 3.50%; Mn: 0.30 to 1.50%; Cr: 0.10 to 1.50%; V: 0.50 to 1.00%, and Al: 0.01% or less (excluding 0%), with the balance being iron and inevitable impurities, wherein an average crystal grain size number of prior austenite crystals in a depth of 0.3 mm from a surface is 11.0 or more, while a difference in grain size number between the respective prior austenite crystals is in a range of less than 3 from a grain size number observed at the maximum frequency, and wherein a carburized layer is provided in a depth of 0.30 to 1.00 mm from the surface, while an average Vickers hardness is 600 or higher at a position in a depth of (1/4) × diameter in the depth direction from the surface.
Abstract:
A steel has a predetermined chemical composition with a balance being Fe and incidental impurities, wherein a sum of Cu content and Ni content is 0.15 mass% or more, and a crystal grain size after forming into a stabilizer shape and quenching is in a range of 7.5 to 10.5 in prior austenite crystal grain size number. Thus, a highly durable stabilizer steel that has a tensile strength of 1200 MPa or more and excellent normal-temperature and low-temperature toughness and is used in an environmentally friendly manufacturing process at lower cost can be realized.
Abstract:
[Problem] To provide a fuel-cell-stack manufacturing method capable of increasing the load that a raised piece of a deformation absorption member can receive from the separator unit. [Solution] The deformation absorption member 20 used in the fuel-cell-stack 1 manufacturing method is disposed between an anode side separator 11 and a cathode side separator 12, and comprises a thin-board-like base material 21, and a plurality of raised pieces 22 that are provided raised from one surface 21a of the base material in a grid pattern. In the arrangement step, an extension portion (the free end portion 22b) extended from the proximal end (the fixed end portion 22a) of the raised piece provided on one surface of the base material is disposed so as to be abutted to the cathode side separator or the anode side separator. The setting step sets the interval between the anode side separator and the cathode side separator along the lamination direction X so that the deformation of the raised piece exceeds an elastic deformation region and enters a plastic deformation region, and is also in a region in which the proximal end that is moved due to the deformation will not come in contact with the cathode side separator or the anode side separator.