Tdk Corporation

Nippon Steel Corporation

Nippon Steel Sumitomo Metal Corporation

Kyocera Corporation

Sae Magnetics (h.k.) Limited

Hitachi, Ltd.

Japan Vilene Company, Ltd.

Canon Kabushiki Kaisha

Headway Technologies, Incorporated

Nippon Hoso' Kyokai

Rohm Co., Ltd.

Subaru Corporation

Hitachi Automotive Systems, Ltd.

Cable Television Laboratories, Inc.

Astellas Pharma Gmbh

Yasuhiro Ito

Koji Shimazawa

Yoshiaki Nakazawa

Seiichi Takayama

Kosuke Tanaka

Nobuto Morigasaki

Toshihiko Kaneko

Nobuyuki Mori

Kenichiro Otsuka

Eiji Komura

Yoshihiro Tsuchiya

Osamu Shindo

Dan Sakurai

Takuma Ariizumi

Ryuji Fujii

Ryuichi Nishimura

Kazuo Onishi

Shuji Ishikawa

Tomoya Kamijo

Kazuya Chito

Hidetaka Hayashi

Kohei Michigami

Daisuke Miyauchi

Toshiya Suzuki

Takashi Honda

Masanao Tanaka

Yasuo Sugure

Yoshitaka Sasaki

Shinji Hara

Toshinari Takahashi

Ryo Hosoi

Satoshi Tomikawa

Kazuaki Takanuki

Takashi Suzuki

Yukio Takahashi

Tatsuya Ishii

Masahiro Saito

Takahiro Sato

Masayuki Sato

Masanori Yasuyama

Naruhiko Nomura

Satoshi Shirakami

Hiroyuki Tanoue

Takeshi Shibayama

Tatsuro Suzuki

Mai Nagano

Shunichi Yuri

Tsutomu Odashima

Kenji Sakai

Ryo Tabata

Shinsuke Hashimoto

Taku Murakami

Yoshihiko Kondo

Thomas Holtzman Williams

Tsutomu Chou

Masahiro Kubo

Masahiro Nakata

Tetsuya Yamada

Hiroyuki Kawata

Takeshi Kawachi

Yuta Suzuki

Masafumi Azuma

Toshihiro Iguchi

Hideaki Kurata

Tohru Yoshida

Yuji Kakinuma

Takashi Ando

Osamu Yuki

Kotaro Matsuo

Jiro Takahashi

Shuichi Okawa

Shigeru Yonemura

Hiroaki Yamazaki

Koichi Kato

Shigeru Oho

Tohru Okada

Hiroki Fujimoto

Takashi Morita

Masaru Murashita

Masaaki Kaneko

Takuya Kishimoto

Donald James McCune

Takashi Yasutomi

Shigeru Yamazaki

Sujit S Phatak

Heming Chen

Yasunori Sawa

Masahiro Uematsu

Eiji Kasahara

Toru Yonebayashi

Kazuya Sato

Yuan Xiao

Toshiaki Takase

Nobuo Yoshikawa

Kenji Komorita

Yasuaki Nishida

Akihiko Hyodo

Takahiro Aitoh

Soma Sonobe

Masaki Hirooka

An objective of the present invention is to provide a steel sheet having a high strength which can provide excellent appearance quality. The steel sheet has a chemical composition including, in mass %, C: more than 0.030% to 0.145%, Si: 0% to 0.500%, Mn: 0.50% to 2.50%, P: 0% to 0.100%, S: 0% to 0.020%, Al: 0% to 1.000% or less, N: 0% to 0.0100%, and the like, wherein a metal micro-structures consisting of 70 to 95% of ferrite in volume fraction and 5 to 30% of hard phases in volume fraction, and a value X1 obtained by dividing a standard deviation of average Mn concentrations in a rolling direction at ¼ sheet-thickness positions in a sheet thickness direction by an average Mn concentration at the ¼ sheet-thickness positions is 0.025 or less.

Steel sheet

There is provided a steel sheet that delivers an excellent appearance quality in its formed product. The steel sheet has a chemical composition including, in mass %, C: 0.030% to 0.145%, Si: 0% to 0.500% or less, Mn: 0.50% to 2.50%, P: 0% to 0.100%, S: 0% to 0.020%, Al: 0% to 1.000%, N: 0% to 0.0100%, and the like, wherein a metal micro-structure consists of 70 to 95% ferrite in volume fraction and 5 to 30% hard phases in volume fraction, and a value X1 obtained by dividing a standard deviation of Vickers hardnesses Hat ¼ sheet-thickness positions by an average value of the Vickers hardnesses His 0.025 or less, and a value X2 obtained by dividing a standard deviation of Vickers hardnesses Hat a ½ sheet-thickness position by an average Value of the Vickers hardnesses His 0.030 or less.

A burring processing method including increasing a diameter of a prepared hole provided in a metal component and bending a part of the metal component to form a burring processed portion () including an upright portion () and a curved portion (), wherein in a cross-section that passes through an axis (cb) of the burring processed portion () and is parallel to the axis (cb) of the buffing processed portion (), a cross-sectional shape of the curved portion () on an inner surface of the curved portion consists of a curve, and a length of the curved portion () in a direction perpendicular to the axis (cb) of the burring processed portion () is at least 1.2 times a height of the curved portion in a direction parallel to the axis (cb) of the burring processed portion ().

Burring processing method, method for manufacturing burring processed product, burring processing mold, burring processing device, and burring processed product

A structural part includes a part body and a cylindrical bush. The part body includes a through-hole and a cylindrical flange part provided in the periphery of the through-hole. The bush is inserted into the through-hole and the flange part. When seen in a cross section including a central axis of the bush, the flange part has a height difference between a first part that contacts the bush on one side in a direction perpendicular to the central axis and a second part that contacts the bush on the other side.

Structural part

A long structural member that, in a transverse section of one part or all of the long structural member in a longitudinal direction, includes the following configuration. A top plate part, a first flange part, and a second flange part are flat. A first side plate part, a first upper corner part, and a first lower corner part constitute a first thick-wall part. A thickness of the first thick-wall part is greater than a thickness of the top plate part and is greater than a thickness of the first flange part. A second side plate part, a second upper corner part, and a second lower corner part constitute a second thick-wall part. A thickness of the second thick-wall part is greater than the thickness of the top plate part and is greater than a thickness of the second flange part.

Long structural member and blank material

Provided is a blank made of a steel and comprising at least two protruding regions () having an outer edge () protruding outward in in-plane directions, in which a softened part () is formed at least partially in the protruding regions () and the softened part () is formed in at least a part of the outer edge of the protruding regions (), a Vickers hardness of the softened part () is lower than a Vickers hardness of a main portion region (), and the blank comprises at least two of the protruding regions () having the softened part ().

Blank and component

There is provided a resistance spot welding apparatus including a first rod-shaped electrode body, second rod-shaped electrode body, first ring-shaped member, second ring-shaped member, first elastic body, and second elastic body. The first rod-shaped electrode body and second rod-shaped electrode body are arranged facing each other, the first rod-shaped electrode body is inserted into a through hole of the first ring-shaped member, the first elastic body is connected to an opposite side of first ring-shaped member to second rod-shaped electrode body side, the first rod-shaped electrode body and first ring-shaped member are not electrically connected to each other, the second rod-shaped electrode body is inserted into a through hole of the second ring-shaped member, the second elastic body is connected to an opposite side of second ring-shaped member to first rod-shaped electrode body side, and the second rod-shaped electrode body and second ring-shaped member are not electrically connected each other.

Resistance spot welding apparatus and method for manufacturing a welded structure

Disclosed herein is a separator for an electrochemical element, comprising a fibrous structure, wherein the fibrous structure has a first fibrous layer part in which short fibers and/or pulp-like fibers are intertwined with each other, and a second fibrous layer part; some of the short fibers and/or the pulp-like fibers constituting the first fibrous layer part penetrates the second fibrous layer part; and a pore diameter distribution of the fibrous structure satisfies the following formula: 0 μm<Dmax<18 μm, and 0 μm≤(Dmax−Dave)<13 μm, wherein Dmax is a maximum pore diameter (μm) of the fibrous structure, and Dave is an average pore diameter (μm) of the fibrous structure.

Separator for electrochemical element

A dielectric composition includes main-phase particles each including a main component having a perovskite crystal structure represented by a general formula of ABO. At least a part of the main-phase particles has a core-shell structure. The dielectric composition includes RA, RB, M, and Si. Each of A, B, RA, RB, and M is one or more elements selected from a specific element group. S/S>C/Cis satisfied, where Cis an RA content (mol %) to the main component in terms of RAO, and Cis an RB content (mol %) to the main component in terms of RBO, in the dielectric composition, and Sis an average RA content (mol %), and Sis an average RB content (mol %), in a shell part of the core-shell structure.

Dielectric composition, electronic device, and multilayer electronic device

A dielectric composition includes a main phase and segregation phases each including RE (at least one rare earth element). The main phase includes a main component having a perovskite crystal structure of ABO(A is one or more selected from Ba, Sr, and Ca, and B is one or more selected from Ti, Zr, and Hf). The segregation phases are classified into first segregation phases whose atomic ratio of Si to RE is 0 or more and 0.20 or less and second segregation phases whose atomic ratio of Si to the RE is more than 0.20. 0&#x2264;S1/S2&#x2264;0.10 is satisfied on a cross section of the dielectric composition, where S1 is an area ratio of the first segregation phases, and S2 is an area ratio of the second segregation phases. An atomic ratio of Si to RE in the second segregation phases is 0.80 or less on average.

This steel sheet is a steel sheet () formed by causing end surfaces of a first sheet material () and a second sheet material () to abut each other in an in-plane direction and welding the first sheet material () and the second sheet material () via a strip-shaped welded part (), and in which a softened part () that is softened more than other parts in the welded part () is formed in at least a part of the welded part (), and on a first end surface of the steel sheet in which an end part of the welded part () in a longitudinal direction is formed, a region in which the softened part () is not formed is provided in at least a part of the end part of the welded part () in the longitudinal direction, and a maximum value of a depth of the softened part () in a sheet thickness direction is, as a ratio to a sheet thickness of the steel sheet (), 50% or less.

Steel sheet and member

A panel structure includes: a panel made of metal; and a reinforcement joined to the panel and made of a plurality of FRP layers including continuous fibers, in which each of the plurality of FRP layers has a single fiber direction, at least one layer out of the plurality of FRP layers has a fiber direction different from that of another layer, in the plurality of FRP layers, a proportion of layers having an angular difference in the fiber direction of 30&#xb0; or more is 15% or more of all of the layers, and when calculating, by defining a long side direction being a long direction of a long edge of the panel as a 90&#xb0; direction and a direction orthogonal to the 90&#xb0; direction as a 0&#xb0; direction, each of a 90&#xb0; direction component and a 0&#xb0; direction component regarding the fiber direction of each FRP layer of the reinforcement joined to the panel, by using a trigonometric function, an expression (1) is satisfied.

Panel structure

An automobile structural member has a first wall part, a second wall part that faces the first wall part, and a third wall part that connects the first wall part and the second wall part. At least one of the first wall part and the second wall part has a main wall part in which two through-holes are formed, and at least two auxiliary wall parts that are provided so as to rise from the main wall part. Each auxiliary wall part is provided so as to rise in the thickness direction of the main wall part from an edge of a through-hole. The distance between two auxiliary wall parts in the longitudinal direction of the main wall part is 1.4 times or less the width of the main wall part at a portion between the two auxiliary wall parts.

Automobile structural member and vehicle body

This manufacturing method of a structural member includes an intermediate step and a bending step. A height difference is provided on a bottom wall of a groove part between an intermediate position and both end positions sandwiching the intermediate position therebetween in a longitudinal sectional view in an extending direction of the groove part by the pressing in the intermediate step, and thereby at least one of a first curved part which has a concave curved shape in a plan view and a convex curved shape in the longitudinal sectional view and a second curved part which has a convex curved shape in the plan view and a concave curved shape in the longitudinal sectional view is formed on the bottom wall.

Manufacturing method and manufacturing device of structural member

A vehicle includes a maintenance-necessity detector and an automatic driving controller. The maintenance-necessity detector is configured to determine whether maintenance of the vehicle is necessary. The automatic driving controller is configured to cause the vehicle to move to a maintenance facility at which the maintenance of the vehicle is to be performed, on the basis of automatic driving that is independent of driving to be performed by an occupant of the vehicle, in a case where the maintenance is determined by the maintenance-necessity detector as being necessary.

Vehicle

Growing community of inventors

Tokyo, Japan

Yasuhiro Ito