Kanegafuchi Kagaku Kogyo Kabushiki Kaisha

Jfe Steel Corporation

Kawasaki Steel Corporation

Ge Yokogawa Medical Systems, Limited

Nec Corporation

Ge Medical Systems Global Technology Company, LLC

Teac Corporation

Ube Exsymo Co., Ltd.

Yasushi Kato

Hisao Furukawa

Takumi Ujiro

Hiroki Ota

Osamu Furukimi

Susumu Satoh

Naotami Ando

Yoshihiro Yazawa

Masaaki Sakuma

Kenji Suzuki

Mitsuyuki Fujisawa

Shunsuke Sasaki

Shin Ishikawa

Tatsuro Katsumura

Yoshihiro Ozaki

Katsuhiko Isayama

Kunio Fukuda

Takeshi Yokota

Kazuya Yonezawa

Akito Mizutani

Tetsuyuki Nakamura

Koji Yamato

Atsushi Matsumoto

Susumu Sato

Tomohiro Ishii

Kenichi Fujita

Atsushi Miyazaki

Takashi Ishiguro

Yasuhiro Yamaguchi

Takatoshi Okabe

Yuji Hashimoto

Takayuki Maruyama

Takako Yamashita

Osamu Hashimoto

Hiroyuki Ogata

Kazuhiko Hayakawa

Hirotoshi Kawaguchi

Keiichi Yoshioka

Peter C Sullenberger

Norimasa Hirata

Yukitoshi Shimo

Masaaki Azuma

Shoichi Matsumura

Toshiro Nambu

Toshiro Nanbu

Sadao Hasuno

Saori Nakatsuka

Hiroki Ushida

Sota Goto

Shinsuke Ide

Fusao Togashi

Tetsuo Ogino

Naoki Nishiyama

Katsuhisa Yamauchi

Kenji Watanabe

Jo Kawamura

Kenji Takao

Masaharu Inoue

Nozomu Uetake

Kazuyoshi Shimizu

Ikuomi Natori

Joe Kawamura

Atsutaka Honda

Hideyuki Ohnari

Tsunemoto Suzuki

Sunao Sugiura

Takaaki Iguchi

Seiji Tanaka

Hideaki Yamashita

Shinji Kagitani

Peter C Sullenperger

Hisao Furkawa

Keiko Okada

Hideya Furusawa

Kousuke Kanno

An apparatus line for manufacturing seamless steel pipes and tubes includes: a heating apparatus for heating a steel raw material; a piercing apparatus for piercing the heated steel raw material thus forming a hollow material; and a rolling apparatus for applying working to the hollow material to form a seamless steel pipe having a predetermined shape. A cooling apparatus is arranged on an exit side of the rolling apparatus. A heated steel raw material is worked by the rolling apparatus after being pierced by the piercing apparatus, and thereafter, using a surface temperature of a hollow piece before being cooled by the cooling apparatus as a cooling start temperature, the hollow piece is cooled to a cooling stop temperature differing by 50&#xb0; C. or more from the cooling start temperature and being equal to or above 600&#xb0; C. at an average cooling speed of 1.0&#xb0; C./s or more in terms of an outer surface temperature.

Apparatus line for manufacturing seamless steel pipe and tube and method of manufacturing duplex seamless stainless steel pipe

There is provided a wound thread package that is unlikely to cause problems such as cob-webbing and collapse at the time of unwinding even when the wound thread is a multi-filament thread or tape-like thread, and a manufacturing method for the same. To manufacture a wound thread packageby winding a plurality of multi-filament threads or tape-like threads having a total fineness of 100 to 6400 dtex per thread around a bobbinby a traverse method, the threads constituting a thread layerare arranged at intervals therebetween and wound with the same in traverse width w and at different traverse reverse positions.

Wound thread package and manufacturing method for same

A high-strength heavy-walled stainless steel seamless tube or pipe exhibiting excellent low-temperature toughness is characterized by having a chemical composition containing Cr: 15.5% to 18.0% and a steel microstructure containing a ferritic phase and a martensitic phase, wherein the maximum value of the areas of the ferrite grains in the steel microstructures in a circumferential direction cross section and an L direction (rolling direction) cross section of the steel tube or pipe is 3,000 &#x3bc;mor less and the content of ferrite grains having areas of 800 &#x3bc;mor less is 50% or more on an area fraction basis, where, when adjacent ferrite grains are present in the steel microstructure and the crystal misorientation between one ferrite grain and the other ferrite grain is 15&#xb0; or more, the adjacent grains are assumed to be grains different from each other.

High-strength heavy-walled stainless steel seamless tube or pipe and method of manufacturing the same

An equipment line for manufacturing heavy-walled steel products having excellent low-temperature toughness, the equipment line including a heating device, a cooling device, and a hot working device in this order. The working device includes plurality of hot working devices, and the cooling device is arranged on an entrance side of at least one of the plurality of hot working devices. Furthermore, a thermostat equipment is arranged on an exit side of the hot working device. The equipment line provides a steel product with a finer microstructure with a relatively small amount of working.

Equipment line for manufacturing heavy-walled steel products

A stainless steel for use in a fuel cell separator is produced by subjecting stainless steel containing 16 mass % or more of Cr to electrolytic treatment and thereafter to immersion treatment in a solution containing fluorine. The electrolytic treatment is carried out by anodic electrolyzation or by a combination of anodic electrolyzation and cathodic electrolyzation, and an anodic electrolytic quantity Qa and a cathodic electrolytic quantity Qc preferably satisfy Qa&#x2267;Qc. The solution containing fluorine preferably has a temperature of 40&#xb0; C. or higher, and hydrofluoric acid concentration [HF] (mass %) and nitric acid concentration [HNO] (mass %) satisfying [HF]&#x2267;0.8&#xd7;[HNO].

Method for producing stainless steel for fuel cell separator, stainless steel for fuel cell separator, fuel cell separator, and fuel cell

Provided are a stainless steel foil and a catalyst carrier for an exhaust gas purifying device which uses the foil. Specifically, a stainless steel foil contains, in percent by mass, 0.05% or less of C, 2.0% or less of Si, 1.0% or less of Mn, 0.003% or less of S, 0.05% or less of P, more than 15.0% and less than 25.0% of Cr, 0.30% or less of Ni, 3.0% to 10.0% of Al, 0.03% to 1.0% of Cu, 0.10% or less of N, 0.02% or less of Ti, 0.02% or less of Nb, 0.02% or less of Ta, 0.005% to 0.20% of Zr, 0.03% to 0.20% of REM excluding Ce, 0.02% or less of Ce, 2.0% to 6.0% in total of at least one of Mo and W, and the balance being Fe and incidental impurities.

Stainless steel foil and catalyst carrier for exhaust gas purifying device using the foil

Ferritic stainless steel is excellent in terms of both oxidation resistance and thermal fatigue resistance without adding expensive elements, such as Mo or W. The ferritic stainless steel, contains: C: 0.015 mass % or lower, Si: 1.0 mass % or lower, Mn: 1.0 mass % or lower, P: 0.04 mass % or lower, S: 0.010 mass % or lower, Cr: 16 to 23 mass % or lower, N: 0.015 mass % or lower, Nb: 0.3 to 0.65 mass %, Ti: 0.15 mass % or lower, Mo: 0.1 mass % or lower, W: 0.1 mass % or lower, Cu: 1.0 to 2.5 mass %, Al: 0.2 to 1.5 mass %, and the balance of Fe and inevitable impurities.

Heat-resistance ferritic stainless steel

A stainless steel foil contains, in percent by mass, 0.05% or less of C, 2.0% or less of Si, 1.0% or less of Mn, 0.003% or less of S, 0.05% or less of P, 25.0% to 35.0% of Cr, 0.05% to 0.30% of Ni, 3.0% to 10.0% of Al, 0.10% or less of N, 0.02% or less of Ti, 0.02% or less of Nb, 0.02% or less of Ta, 0.005% to 0.20% of Zr, 0.02% or less of Ce, 0.03% to 0.20% of REM excluding Ce, 0.5% to 6.0% in total of at least one of Mo and W, and the balance being Fe and incidental impurities.

Provided are a stainless steel for a proton-exchange membrane fuel cell separator having high durability and a low contact resistance (i.e., high electrical conductivity) and a proton-exchange membrane fuel cell using the same. More specifically, a stainless steel for a proton-exchange membrane fuel cell separator has a composition comprising 0.03% mass % or less of C, 16-45 mass % of Cr, 0.03 mass % or less of N, 0.1-5.0 mass % of Mo, wherein a total of the C content and the N content satisfies 0.03 mass % or less; a balance portion is comprised of Fe and unavoidable impurities; an atomic ratio of Cr/Fe with respect to Al, Cr, and Fe contained in a passive film on a surface of the stainless steel is 1 or greater.

Stainless steel for solid polymer fuel cell separator and solid polymer typefuel cell using the stainless steel

A ferritic Cr-contained steel having a reduced thermal expansion coefficient is provided. The ferritic Cr-contained steel contains C of 0.03% or less, Mn of 5.0% or less, Cr of 6 to 40%, N of 0.03% or less, Si of 5% or less, and W of 2.0% to 6.0% in percent by mass, and Fe and inevitable impurities as the remainder, wherein precipitated W is 0.1% or less in percent by mass, and an average thermal expansion coefficient between 20&#xb0; C. and 800&#xb0; C. is less than 12.6&#xd7;10-6/&#xb0; C.

Ferritic Cr-contained steel

A steel sheet for a brake disc contains, on a mass percent basis, 0.02% or more and less than 0.10% C, 0.6% or less Si, more than 0.5% and 2.0% or less Mn, 0.06% or less P, 0.01% or less S, 0.05% or less Al, 11.0% to 13.5% Cr, 0.01% to 0.30% Ni, 0.10% to 0.60% Nb, 0.03% or more and less than 0.10% N, more than 0.0010% and 0.0060% or less B, and the balance being Fe and incidental impurities, and the steel sheet after quenching has a hardness of 32 HRC to 40 HRC on a Rockwell hardness scale C (HRC).

Steel sheet for brake disc, and brake disc

A low Ni and high N austenitic-ferritic stainless steel is disclosed. It includes an austenitic-ferritic stainless steel having high formability and punch stretchability, crevice corrosion resistance, corrosion resistance at welded part, or excellent intergranular corrosion resistance, from a stainless steel structured by mainly austenite phase and ferrite phase, and consisting essentially of 0.2% or less C, 4% or less Si, 12% or less Mn, 0.1% or less P, 0.03% or less S, 15 to 35% Cr, 3% or less Ni, and 0.05 to 0.6% N, by mass, by adjusting the percentage of the austenite phase in a range from 10 to 85%, by volume. Furthermore, it includes an austenitic-ferritic stainless steel having higher formability by adjusting the amount of (C+N) in the austenite phase to a range from 0.16 to 2% by mass.

Austenitic-ferritic stainless steel

There is disclosed a device which realizes a shortcut function without providing any key exclusively used for the shortcut function. When a home key is operated in a state where a lower screen at a lower position of a hierarchical structure is displayed, a home screen at an upper position of the hierarchical structure is displayed, and data to specify the lower screen when the home key is operated are stored in association with the home key. When the home key is operated in a state where the home screen is displayed, the lower screen is displayed based on the stored data to take a shortcut to the lower screen from the home screen.

Screen display control device for displaying a home screen and non-home screens

A material for brake discs has temper softening resistance sufficient to maintain a hardness of HRC 31 or more after tempering at 700&#xb0; C. for one hour. The low-carbon martensitic chromium-containing steel contains 0.02% to 0.10% of carbon and 0.02% to 0.10% of nitrogen, the total content of carbon and nitrogen being 0.08% to 0.16%; 0.5% or less of silicon; 0.1% or less of aluminum; 0.3% to 3.0% of manganese; 10.5% to 13.5% of chromium; 0.05% to 0.60% of niobium and 0.15% to 0.80% of vanadium, the total content of niobium and vanadium being 0.25% to 0.95%; 0.02% to 2.0% of nickel; and 1.5% or less of copper, and has an Fp value (=&#x2212;230C+5Si&#x2212;5Mn&#x2212;6Cu+10Cr&#x2212;12Ni+32Nb+22V+l2Mo+8W+10Ta+40A1&#x2212;220N) of 80.0 to 96.0, a hardness after quenching of HRC 31 to 40, and a hardness after tempering at 700&#xb0; C. for one hour of HRC 31 or more.

Low-carbon martensitic chromium-containing steel

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Tokyo, Japan

Yasushi Kato