55results about How to "Realize thin wall" patented technology

Provided are a high-strength hot-pressing member and a method for producing the same. A material is obtained by subjecting a cold-rolled steel sheet having a composition containing, in mass%, C in the amount of at least 0.090% and less than 0.30% and Mn in the amount of at least 3.5% and less than 11.0%, to a treatment comprising maintained heat in a temperature region of at least the Ac1 transformation temperature and no higher than 850 DEG C for at least 100 seconds and no more than 48 hours, followed by cooling. In addition, a hot-pressing member having a prescribed shape is obtained by subjecting the material to a heating step for maintaining a temperature in the range of 800-1,000 DEG C for 600 seconds or less, and a hot-pressing molding step for simultaneously press molding using a molding die and tempering. As a result, it is possible to obtain a high-strength hot-pressing member having a composition containing 3.0% or more of a retained austenitic phase, with the remainder constituting a martensitic phase, and exhibiting the tensile properties of a tensile strength TS of 1500 MPa or higher and a uniform elongation uEl of 6.0% or higher. Using a steel sheet having a Zn-plating layer or an Al-plating layer on the surface thereof as the cold-rolled steel sheet to be used also imparts the effect of suppressing the formation of scaling on the member surface and improving the producibility of the hot-pressing member.

Disclosed is a variable displacement compressor having improved compressor performance such as reduced pulsation and improved durability and resistance to pressure and allowing smooth and high-precision control by using an axial movement member to set the swash plate tilt angle to match a target tilt angle. The variable displacement compressor is provided with a cylinder head in which are formed a suction chamber and a discharge chamber, a cylinder block having a cylinder bore such that an inserted piston is capable of reciprocating movement, a crankcase formed by said cylinder block and a front housing, a swash plate that is rotated with the main shaft and that is disposed inside said crankcase and held so that the tilt angle can be changed relative to said main shaft, and a movement conversion mechanism for converting the rotational movement of said swash plate to the reciprocating movement of a piston, wherein: the suction path for the intake of a suction gas into the compressor is constituted to open into the crankcase; a connecting path for connecting the crankcase and the suction chamber is provided in the cylinder block; around the periphery of the main shaft, an axial movement member is provided that can move along the axis of the main shaft in an essentially one-to-one correspondence with the tilt angle of the swash plate; said axial movement member is disposed such that one end is exposed to the pressure of the crankcase, and the other end is exposed to a pressure between that of the suction chamber and that of the discharge chamber; and an intermediate pressure control mechanism that can control the intermediary pressure is also provided.

This melt-blown nonwoven fabric is formed of thermoplastic resin fibers having an average fiber diameter of 0.1-10 mum, and has a bulk density of 36 kg / m3 or less and an air permeability of 3-100 cc / cm2 / sec as measured by a Frazier type method at a weight of 200 g / m2. This melt-blown nonwoven fabric has a low bulk density and excellent sound absorption performance, oil absorption performance, heat insulation performance, dust collection performance and filtration performance. Since this melt-blown nonwoven fabric can be formed of a single kind of a resin composition, this melt-blown nonwoven fabric is able to be easily produced and have a uniform quality free from variation in the characteristics in comparison to the cases where mixed fibers or composite fibers composed of a plurality of kinds of resins are used. A sound absorbing material of the present invention can be obtained by an easy process and exhibits excellent sound absorption performance. Consequently, this sound absorbing material is suitable for use as a sound absorbing material for living environments or transportation means. In addition, the sound absorbing material of the present invention can be reduced in weight and thickness.

The invention provides a heat exchanger of which corrosion resistance is ensured on the basis of thinning the wall of the heat exchanger. A wall of each heat exchange tube of a condenser for a car air conditioner is composed of a core material layer, a first brazing material layer covering the outer surface of the core material layer, and a second brazing material layer covering the inner surface of the core material layer. A Zn diffused layer is formed in an outer surface layer portion of the core material layer. The deepest portion of the Zn diffused layer is located at a position 70 to 100 [mu]m deep from an outermost surface of the wall. The Zn concentration of the outermost surface of the wall of the heat exchange tube is 0.55 mass % or higher. The Zn diffused layer includes a high potential portion whose spontaneous potential is at least 41 mV higher than the spontaneous potential at the boundary between the core material layer and the first brazing material layer.

Disclosed is a laminate that exhibits excellent surface hardness, impact resistance, punch-out workability, and resistance to yellowing. Said laminate, which is suitable for use as a display cover or construction material, is characterized in that a polycarbonate resin layer (layer A) and an aromatic polycarbonate resin layer (layer B) are laminated together. The polycarbonate resin layer (layer A) contains a structural unit derived from a dihydroxy compound having, in part of the structure thereof, the site represented by formula (1). (However, the site represented by formula (1) is not part of -CH2-O-H.)

A copper ally for an electronic or electrical device, containing more than 2.0 to 36.5 mass% of Zn, 0.1 to 0.9 mass% of Sn, 0.05 to less than 1.0 mass% of Ni, 0.5 to less than 10 mass ppm of Fe, 0.001 to less than 0.10 mass% of Co, and 0.001 to 0.10 mass% of P with the balance consisting of Cu and unavoidable impurities, satisfying the relationships among the contents of these elements in atomic ratio, 0.002 ≤ Fe / Ni < 1.5, 3 < (Ni+Fe) / P < 15 and 0.3 < Sn / (Ni+Fe) < 5, and containing a precipitate that contains both P and at least one element selected from the group consisting of Fe, Co and Ni.

The purpose of the present invention is to provide: a steel plate for use in a can and exhibiting sufficient hardness and excellent can-torso buckling strength against external pressure; and a method for producing the same. The component composition for this steel plate for use in a can contains, in mass%, C in the amount of 0.0005-0.0030%, inclusive, Si in the amount of 0.05% or less, Mn in the amount of 0.50-1.00%, inclusive, P in the amount of 0.030% or less, S in the amount of 0.020% or less, Al in the amount of 0.01-0.04%, inclusive, N in the amount of 0.0010-0.0050%, inclusive, and B in the amount of 0.0005-0.0050%, inclusive, with the remainder constituting Fe and inevitable impurities. Furthermore, the hardness (HR30T) thereof is 56 or higher, and the average Young's modulus thereof is 215GPa or higher.

Provided is a multi-row thrust ball bearing that has a large load capacity, is thin, and can bear a radial load. According to the present invention, facing surfaces of a pair of races (21, 22) have multiple rows of race grooves (23A, 23B) that are provided along the radial direction. Circumferential edges of openings of pockets (41) of a cage (40) protrude to form tab-shaped protrusions (42) that are oppositely arranged in only the circumferential direction of the cage. The maximum radial-direction width W of the tab-shaped protrusions (42) is smaller than the maximum radial-direction width L of the race grooves (23).

The invention provides a glass ribbon producing apparatus (1) adapted to feed molten glass (Y) to molding member (2) and to cause the molten glass (Y) to flow downward from the molding member (2) so as to form sheetlike glass ribbon (G), comprising reheating means (5) disposed on a transport route for the glass ribbon (G) flowing downward from the molding member (2) so that the glass ribbon (G) is reheated by the reheating means (5) to thereby cause the sheet thickness of the glass ribbon (G) positioned inferior to the reheating means (5) to be smaller than that of the glass ribbon (G) positioned superior to the same.

The invention discloses a manufacturing method of an anti-collision beam, which comprises the following steps: S1: preparing a natural wood board; S2: cleaning the lignin and hemicellulose in the wood board to form a wood board with a plurality of pores; S3: removing the wood board Put into the shear thickening liquid, so that the shear thickening liquid penetrates into the interior of the wood board through each channel and adheres to the wood board; S4: compact the wood board; S5: set a sealing layer on the end face of the wood board to seal the end. In the invention, the shear thickening liquid is filled in the wooden board to form an anti-collision beam. The anti-collision beam of the invention can fully absorb the energy generated by the collision, improve the safety performance of the vehicle, and effectively reduce the damage caused by the collision to the personnel, which belongs to the automobile anti-collision. The technical field of structure.

The present invention provides a frame structure of a scooter-type vehicle. The scooter-type vehicle (10) includes: a head pipe (12) that supports a front fork (13) so as to be steerable; A hollow main pipe (20); a pair of left and right bottom frames (30L, 30R) combined with the lower part of the main pipe and extending from the bottom of the main pipe to the rear of the vehicle body; ) combined and extended along the vehicle width direction; and a pair of left and right rear frames in which the front ends (71L, 71R) are respectively combined with the left and right ends (63L, 63R) of the transverse tube and extended to the upper rear of the vehicle body (70L, 70R). The bottom frame and the rear frame are combined with the cross tube, and at least a part of the bottom frame is combined with at least a part of the rear frame.