Jfe Steel Corporation

Hitachi High-tech Corporation

Mitsubishi Electric Corporation

Kabushiki Kaisha Toshiba

Nhk Spring Co., Ltd.

Oki Data Corporation

Roche Diagnostics Operations, Inc.

Hitachi-high-technologies Corporation

Shunsuke Sasaki

Tatsuro Katsumura

Yoshihiro Yamashita

Kenta Imai

Takenori Okusa

Yusuke Morimoto

Kohei Sato

Yasushi Kato

Masao Yuga

Toshiharu Suzuki

Hideo Kijima

Hiroshi Nakayama

Hiroshi Isozaki

Hiroki Ota

Taku Sakazume

Jun Kanai

Toshiki Kizu

Hiroki Fujita

Shintarou Sano

Hiroya Umeki

Hiroyuki Fukuda

Ryosuke Tachi

Takeshi Ishii

Hiroyuki Yamasaki

Tatsuki Takakura

Hiroki Ushida

Yoshiko Fujima

Taichiro Yamashita

Elke Faatz

Shigeki Matsubara

Yoshio Yamada

Yuichi Kamo

Yukio Kimura

Toshiki Asai

Yusuke Yoshimura

Kazuki Fujimura

Tsuyoshi Inuma

Mitsuhiro Nagaya

Hideto Kimura

Makiko Yoshida

Hirotaka Ohshika

Seigo Goto

Ryuta Nara

Yuichiro Ota

Takayuki Sugime

Takashi Akao

Masaru Miyake

Katsuhiko Sakamoto

Beatus Ofenloch-Haehnle

Teruhiro Yamano

Tamaki Miyata

Yasuhiro Nagayama

Marina Nakai

Akihiro Endou

Hidekazu Tezuka

Takakura Tatsuki

A stainless steel pipe of a predetermined composition is provided that has an axial tensile yield strength of 689 MPa or more, an axial compressive yield strength/axial tensile yield strength ratio of 0.85 to 1.15, and a microstructure that is 20 to 80% ferrite phase by volume with the remainder containing an austenite phase, the stainless steel pipe having pipe end portions at least one of which has a fastening portion for an external thread or an internal thread, and having a curvature radius of 0.2 mm or more for a corner R formed by a bottom surface of a thread root and a pressure-side flank surface of the thread, measured in an axial plane section of the fastening portion.

Stainless steel pipe and method for manufacturing same

Provided is duplex stainless steel which has high strength and high toughness and can be subjected to hot working during manufacturing processes, the duplex stainless steel having a predetermined chemical composition and a microstructure containing an austenite phase in a volume fraction of 20% to 70% and a ferrite phase in a volume fraction of 30% to 80%, and mechanical properties such that a yield strength is 862 MPa or more and an absorption energy in a Charpy impact test at −10° C., vE, is 40 J or more.

Duplex stainless steel, seamless steel pipe or tube, and a method of manufacturing the duplex stainless steel

A seamless steel pipe has a t/Dof 0.05 to 0.40, where t is a wall thickness (mm) of the seamless steel pipe, and Dis an outside diameter (mm) of the seamless steel pipe. The seamless steel pipe has a maximum depth d(mm)≤0.350 mm for defects in an inner surface of the steel pipe on a cross section perpendicular to a pipe axis. The seamless steel pipe has an average defect depth d(mm)≤0.200 mm for defects having a depth of 0.050 mm or more in the inner surface of the steel pipe. The seamless steel pipe, per millimeter of an inner circumferential length of the pipe, has at most 30 defects having a depth of 0.050 mm or more in the inner surface of the steel pipe.

Seamless steel pipe and method of manufacture thereof

The automated analyzer comprises: an analysis operation unit for analyzing a reaction liquid, control unit for controlling the operation of the analysis operation unit, a storage unit for storing analysis results from the analysis operation unit and information about a consumable used by the analysis operation unit, and a display unit for displaying the analysis results and inspection information. The control unit generates an inspection information display GUI including a first inspection information display area for displaying first inspection information from among the inspection information and a second inspection information display area for displaying second inspection information, which is different from the first inspection information, from among the inspection information, controls the display unit such that when the inspection information display GUI is displayed on the screen of the display unit, the first inspection information and second inspection information are displayed in different display formats.

Automated analyzer displaying a GUI including first and second inspection information

A stainless steel pipe of a predetermined composition is provided that comprises N, Ti, Al, V, and Nb so as to satisfy the predetermined formula, the stainless steel pipe having an axial tensile yield strength of 757 MPa or more, an axial compressive yield strength/axial tensile yield strength ratio of 0.85 to 1.15, and a microstructure that is 20 to 80% ferrite phase by volume with the remainder containing an austenite phase, the stainless steel pipe having pipe end portions at least one of which has a fastening portion for an external thread or an internal thread, and having a curvature radius of 0.2 mm or more for a corner R formed by a bottom surface of a thread root and a pressure-side flank surface of the thread, measured in an axial plane section of the fastening portion.

A rolling mill includes three or more rolling rolls aligned along a circumferential direction and arranged so each rotary shaft is skewed with respect to a pass line of a material to be rolled, wherein the material to be rolled made of a pipe or bar material passes between the rolling rolls while being rotated to undergo diameter reducing rolling. At least one rolling roll selected from the three or more rolling rolls is smaller in roll diameter than at least one other rolling roll. When at least one rolling roll having a relatively maximum roll diameter defined as a maximum diameter rolling roll and at least one rolling roll smaller in roll diameter than the maximum is defined as a small diameter rolling roll, the small diameter rolling roll has a roll diameter equal to or less than 90% of the roll diameter of the maximum diameter rolling roll.

Rolling mill for diameter reducing rolling and method for manufacturing strip material

A skew rolling apparatus with which shape defects in non-steady-state portions at the front and back ends of a seamless pipe shell can be prevented. The skew rolling apparatus includes a skew pierce rolling mill configured to pierce roll a steel material into a seamless pipe shell, and a skew outside-diameter mill following the skew piercing mill in a pass direction of the seamless pipe shell in the skew rolling apparatus. The skew rolling apparatus satisfies specified formulae.

Skew rolling apparatus, method for manufacturing seamless pipe shell, and method for manufacturing seamless steel pipe

Provided herein is a duplex stainless steel seamless pipe and a method for manufacturing the same. The duplex stainless steel seamless pipe has a composition comprising, in mass %, C: 0.005 to 0.08%, Si: 0.01 to 1.0%, Mn: 0.01 to 10.0%, Cr: 20 to 35%, Ni: 1 to 15%, Mo: 0.5 to 6.0%, N: 0.150 to less than 0.400%, and one, two or more selected from Ti: 0.0001 to 0.3%, Al: 0.0001 to 0.3%, V: 0.005 to 1.5%, Nb: 0.005 to less than 1.5%, and the balance being Fe and incidental impurities. The duplex stainless steel seamless pipe contains N, Ti, Al, V, and Nb so as to satisfy the following formula (1). The duplex stainless steel seamless pipe has an axial tensile yield strength of 757 MPa or more, and a ratio of 0.85 to 1.15 as a fraction of axial compressive yield strength to axial tensile yield strength.0.150>N−(1.58Ti+2.70Al+1.58V+1.44Nb)  (1),

Duplex stainless steel seamless pipe and method for manufacturing same

The seamless pipe in which a thin-walled portion in a pipe circumferential direction is formed in a pipe axial direction, in which a line segment formed by connecting one end and the other end of the thin-walled portion along a pipe surface with a shortest distance in a formation direction of the thin-walled portion is inclined at an angle α of 5.0° or more with respect to the pipe axial direction. It is preferable that one end and the other end of the thin-walled portion are set from a region in a pipe selected with a shorter length between a length of 1.0 m in the pipe axial direction and 90% of a length in the pipe axial direction where the thin-walled portion turns once in the pipe circumferential direction.

Seamless pipe and method for manufacturing same

Provided is an automatic analyzer in which user work is in conjunction with apparatus driving and operation of a user even in complicated maintenance work is simplified. The automatic analyzer includes a measurement deviceand a control device. The control device controls the measurement device. The control device includes an input unitthat receives a start instruction of maintenance work by a user, a control unitthat controls an apparatus to perform a predetermined first processing in accordance with input, a driving unit that performs driving in accordance with processing of the control unit, a display unitthat displays a second processing to be performed by the user in conjunction with the first processing after the first processing is terminated by the driving unit. The control device sequentially guides maintenance work of the user by performing the first processing or the second processing after the displayed second processing is executed by the user.

Automatic analyzer and maintenance support method

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

Provided is a rolling straightening machine which enables outer-diameter-reducing rolling and straightening rolling of a pipe or tube material or a bar material at high speed with high accuracy. The rolling straightening machine includes at least two rollers arranged across a pass line of a pipe or tube material or a bar material, the at least two rollers having a gap therebetween, the gap being defined by an outer-diameter-reducing rolling portion having a diameter reduced from an upstream side toward a downstream side in the rolling straightening machine and a straightening rolling portion continuous from an exit side of the outer-diameter-reducing rolling portion toward a downstream side of the rolling straightening machine, the rollers having shapes which are symmetrical about the pass line in the outer-diameter-reducing rolling portion, and in the straightening rolling portion, asymmetrical to the pass line in the outer-diameter-reducing rolling portion.

Rolling straightening machine and method of manufacturing a pipe or tube or a bar using same

There is provided an automatic analysis device that can easily realize introduction and replacement of additional reagents in operation even in a small-scale configuration. The automatic analysis device includes a reagent dispensing mechanismthat dispenses a reagent from a reagent containercontaining a reagent, and a normal reagent storage portionthat stores a reagent container and an additional reagent storage portionThe normal reagent storage portionis positioned in a normal movable areawhich is a portion of a movable areaof the reagent dispensing mechanismand the additional reagent storage portionis positioned in an area excluding the normal movable areain the movable areaof the reagent dispensing mechanismThe reagent dispensing mechanismperforms an access operation in the normal movable areain the normal operation and performs an access operation to the additional reagent storage portionupon receiving a predetermined instruction.

Automatic analysis device

An automated analyzer includes an analysis operation part that causes a sample and a reagent to react and based on the reaction result performs analysis of the sample, wherein: the automated analyzer includes a plurality of units constituting the analysis operation part, a temperature adjustment mechanism that heats or cools the units, a temperature sensor that measures the temperature of the units, and a control part that controls the temperature adjustment mechanism. The control part sets the measurement startable temperature range of each unit, which is the temperature range of the operation specification thereof, and the operable temperature range, which is a temperature range that is wider than the measurement startable temperature range, and starts the analysis process of the sample when the temperature of each unit has entered the operable temperature range.

Automated analyzer and automated analysis system

An object is to provide an automatic analyzer that prevents an effect of various environmental changes on an equilibrium state of an immunological binding reaction. An automatic analyzer of an embodiment of the invention includes a B/F separation unit that executes a B/F separation step separating an unreacted component and a reacted component from a liquid in which a sample and a reagent are reacted, a detection unit that detects a reacted component in the liquid after the B/F separation step, and a temperature maintaining unit that maintains the B/F separation unit and the detection unit in substantially the same temperature environment.

Automatic analyzer

Growing community of inventors

Tokyo, Japan

Shunsuke Sasaki