Jfe Steel Corporation

Sony Corporation

Japan Tobacco Inc.

Jfe Container Co., Ltd

Nobuyuki Ishikawa

Makoto Suzuki

Shigeru Endo

Junji Shimamura

Akihide Nagao

Toshio Takano

Hiroshi Okano

Nobuo Shikanai

Toyohisa Shinmiya

Daisuke Mizuno

Shusaku Takagi

Shinichi Miura

Keiji Ueda

Hideyuki Kimura

Haruo Nakamichi

Mitsuo Kimura

Yujiro Ito

Masayuki Tsuji

Kazukuni Hase

Takuya Hasegawa

Mitsuhiro Okatsu

Hiroshi Higuchi

Tadashi Imai

Jun Sawai

Tomoyuki Yokota

Satoshi Ueoka

Kazuhiko Katayama

Hideaki Murayama

Kimitaka Uchii

Kyono Yasuda

Naoki Takayama

Kazuki Matsubara

Shusaku Ota

Minoru Suwa

Shinichi Kakihara

Akihiko Tanizawa

Hitoshi Sueyoshi

Yasumitsu Kiyoto

Ryo Nagao

Yoshihiro Morioka

Fumio Ishikawa

Kimihiro Nishimura

Shinichi Tanabe

Koji Fujimoto

Yutaka Matsui

Yukio Yamazaki

Seishi Tsuyama

Shinji Otsuka

Hisaaki Narahara

Tetsuya Yoshimura

Masayuki Horie

Takahisa Kudo

Ryuji Muraoka

Tomohiro Matsushima

Naho Inoue

Yutaka Awajiya

Kotaro Kadota

Yasuhiro Murota

Shigeaki Sugimoto

Kiyohiro Sasakawa

Yoshiaki Ota

Keisuke Haruki

Kosuke Ota

Shusaku Ohta

Kei Sadakari

Norikazu Yamaguchi

Hiroki Kuno

Akiyoshi Tsuji

Yukio Shimbo

Hiroshi Awajiya

To alleviate stress exerted on a thread portion of a high pressure gas container including a metallic container to prevent fatigue fracture, there is provided a high pressure gas container comprising a metallic container, wherein the metallic container includes: a metallic cylinder; a female thread portion on an inner peripheral surface of the metallic cylinder at at least one end; and a lid having, on an outer peripheral surface, a male thread portion configured to screw into the female thread portion, and a maximum value of residual compressive stress at a position of 0.4 mm in a depth direction from a plurality of thread bottoms of the female thread portion and the male thread portion is 100 MPa or more, less than or equal to tensile strength of a material of the metallic cylinder, and less than or equal to tensile strength of a material of the lid.

High pressure gas container and production method therefor

The purpose of the present invention is to provide a tobacco filling: that is for a non-combustion-type heating smoking article that heats a filling that contains cut tobacco; that suppresses reductions in the evaporated amount of a fragrant smoke flavor component for the non-combustion-type heating smoking article; and that can suppress the 'feeling that fragrant smoke flavor is being inhibited.' According to the present invention, a dihydrogen salt of a trivalent or tetravalent acid that has a first acid dissociation constant of 1.0 or lower is added to a tobacco filling, and, as a result, reductions in the evaporated amount of a fragrant smoke flavor component can be suppressed, as can “the feeling that fragrant smoke flavor is being inhibited.”

Tobacco filling for non-combustion-type heating smoking article

A method for evaluating a delayed fracture characteristic of a metal material that performs a step including a step (A) and a step (B) below once or a plurality of times to evaluate the delayed fracture characteristic of the metal material having been processed. Step (A): a step that brings an aqueous solution which includes a chloride ion into contact with a surface of the metal material to cause chloride of 1000 to 100000 mg/min chloride amount to deposit to the surface. Step (B): a step in which the metal material to which the chloride has deposited in the step (A) is left stationary in an air atmosphere at a temperature from −50 to 10° C. and at a relative humidity higher than or equal to a deliquescence humidity of the chloride.

Method for evaluating delayed fracture of metal material

A high-pressure hydrogen container includes: a cylinder body; and a lid member that closes an end portion of the cylinder body. The cylinder body includes: a joining portion that fixes the lid member; a cylinder portion that forms an outer shell of a storage portion; and a sealing surface formed at an inner surface of the cylinder body. At least H<K is satisfied, where an area of the sealing surface which the sealing portion abuts is an abutting area, H is a thickness from the abutting area to an outer surface of the cylinder body, part of the cylinder body in which a stress greater than or equal to a predetermined stress σ is generated is a stress generation portion, and L is a distance between the abutting area and the stress generation portion.

High-pressure hydrogen container

A high-pressure hydrogen tank includes a metal circular cylinder configured to store high-pressure hydrogen therein, a cap part configured to cover each of opposite end portions of the metal circular cylinder, an outer cylinder surrounding an outer periphery of a circular-cylindrical portion of the metal circular cylinder, and a fastening part configured to fix the cap part to the outer cylinder.

High-pressure hydrogen tank

A hydrogen supply system is configured to supply hydrogen to a fuel-cell vehicle by using a receptacle for hydrogen transport, and includes: a filling unit provided at a hydrogen filling facility and configured to fill the receptacle with hydrogen; a management unit configured to calculate a transport timing at which the hydrogen-filled receptacle is transported to a business facility that operates the fuel-cell vehicle; a transport unit configured to transport the hydrogen-filled receptacle to the business facility in accordance with the transport timing; and a disposition unit configured to dispose the hydrogen-filled receptacle transported to the business facility at a place to which the fuel-cell vehicle is capable of accessing to have a refill of the hydrogen in the business facility.

Hydrogen supply system

A non-combustion heating-type smoking article comprises: a mouthpiece having a suction port hole; a flavor source accommodation section that accommodates a flavor source, and that has a vapor discharge port that discharges a vapor component generated by evaporation of the flavor source; a heater for heating and evaporating the flavor source; a chamber section for establishing communication between the vapor discharge port and the suction port hole, and temporarily storing the vapor component generated by evaporation of the flavor source; and an air intake hole that establishes communication between the inside and the outside of the chamber section. The vapor discharge port is opened to only the chamber section, and during each suction, the vapor component that has accumulated in the chamber section is mixed with intake air that has flowed into the chamber section from the air intake hole and is then transported to the suction port hole.

Non-combustion heating-type smoking article

A life estimation apparatus for a pressure accumulator estimates the life of the pressure accumulator based on an AE signal for the pressure accumulator. The life estimation apparatus includes: an AE sensor that is provided at the pressure accumulator and detects the AE signal; and an estimation unit that sets a point of time at which the AE sensor detects a damage AE signal that is generated from the pressure accumulator because of damage of a material during use of the pressure accumulator, as a minimum initial flaw generation time point that is a point of time at which a minimum initial flaw of the pressure accumulator that is detected by a non-destructive inspection method is generated in shipping of the pressure accumulator.

Life estimation apparatus for accumulator and life extension method for pressure accumulator

A method of manufacturing a pressure accumulator, using an AE signal for the pressure accumulator, includes: a first estimation step of estimating with an AE sensor provided at the pressure accumulator, a range of stress levels at each of which a damage AE signal that is generated from the pressure accumulator because of damage of material of the pressure accumulator is in a predetermined state; and a first design step of designing the pressure accumulator such that a minimum thickness of the pressure accumulator is determined based on the stress level range estimated in the first estimation step.

Method of manufacturing pressure accumulator

Disclosed is, as a high-strength steel plate of API X80 grade or higher with a thickness of 38 mm or more, a thick steel plate for structural pipes or tubes that exhibits high strength in the rolling direction and excellent Charpy properties at its mid-thickness part without addition of large amounts of alloying elements. The thick steel plate for structural pipes or tubes disclosed herein has: a specific chemical composition; a microstructure at its mid-thickness part that is a dual-phase microstructure of ferrite and bainite with an area fraction of the ferrite being less than 50%, and that contains ferrite grains with a grain size of 15 &#x3bc;m or less in an area fraction of 80% or more with respect to the whole area of the ferrite; a tensile strength of 620 MPa or more; and a Charpy absorption energy vEat &#x2212;20&#xb0; C. at the mid-thickness part of 100 J or more.

Thick steel plate for structural pipes or tubes, method of producing thick steel plate for structural pipes or tubes, and structural pipes and tubes

A steel plate for high-strength and high-toughness steel pipes has a chemical composition containing, by mass %, C: 0.03% or more and 0.08% or less, Si: more than 0.05% and 0.50% or less, Mn: 1.5% or more and 2.5% or less, P: 0.001% or more and 0.010% or less, S: 0.0030% or less, Al: 0.01% or more and 0.08% or less, Nb: 0.010% or more and 0.080% or less, Ti: 0.005% or more and 0.025% or less, and N: 0.001% or more and 0.006% or less, and further containing, by mass %, at least one selected from Cu: 0.01% or more and 1.00% or less, Ni: 0.01% or more and 1.00% or less, Cr: 0.01% or more and 1.00% or less, Mo: 0.01% or more and 1.00% or less, V: 0.01% or more and 0.10% or less, and B: 0.0005% or more and 0.0030% or less, with the balance being Fe and inevitable impurities. The steel plate has a microstructure in which an area fraction of ferrite at a &#xbd; position of a thickness of the steel plate is 20% or more and 80% or less and deformed ferrite constitutes 50% or more and 100% or less of the ferrite.

Steel plate for high-strength and high-toughness steel pipes and method for producing steel plate

Disclosed is, as a high-strength steel plate of API X80 grade or higher with a thickness of 38 mm or more, a steel plate for structural pipes or tubes that exhibits excellent resistance to PWHT and excellent toughness at the heat-affected zone, particularly at the butting faces joined by welding, without addition of large amounts of alloying elements. The steel plate for structural pipes or tubes disclosed herein has a specific chemical composition, in which the steel plate has mechanical properties including: (a) a 0.5% yield strength of 555 MPa or more; (b) a tensile strength of 625 MPa or more; and (c) a Charpy absorption energy vEat &#x2212;10&#xb0; C. at its mid-thickness part of 250 J or more, and maintains the mechanical properties (a) to (c) even after subjection to heat treatment at 650&#xb0; C. for 2 hours.

Steel plate for structural pipes or tubes, method of producing steel plate for structural pipes or tubes, and structural pipes and tubes

A high-strength steel having a specified chemical composition, wherein parameter Pis 0.050% or more, the relationship (TS&#x2212;TS)/TS&#x2264;0.050 is satisfied, wherein TS is defined as tensile strength determined at a temperature of 350&#xb0; C. after aging has been performed under the condition of a Larson-Miller Parameter (LMP) of 15700, and wherein TSis defined as tensile strength determined at a temperature of 350&#xb0; C. before the aging is performed, and having a toughness represented by a vEof 100 J or more in a weld heat-affected zone, which is formed when welding is performed.

High-strength steel, method for manufacturing high-strength steel, steel pipe, and method for manufacturing steel pipe

A hydrogen storage tank includes a liner layer to store hydrogen and a carbon fiber reinforced plastic layer disposed outside the liner layer. The liner layer is formed from a low-alloy steel, and the carbon fiber forming the carbon fiber reinforced plastic layer is a pitch based carbon fiber.

Hydrogen storage tank

There are proposed a method for measuring hydrogen-induced cracking which can measure hydrogen-induced cracking initiated in an interior of a test specimen during HIC test and a measuring apparatus used in this method. When cracks initiated in an interior of a test specimenimmersed in a test solutioncontaining hydrogen sulfide is measured by an ultrasonic probeplaced in a vessel, the position and size of cracks initiated in the interior of the test specimenare measured with the lapse of time at a state of immersing the test specimenin the test solution by scanning the ultrasonic probeor the test specimen

Method and apparatus for measuring hydrogen-induced cracking

Growing community of inventors

Fukuyama, Japan

Nobuyuki Ishikawa