Nitto Kohki Co., Ltd.

Nippon Steel Corporation

Toyota Jidosha Kabushiki Kaisha

Nippon Steel Sumitomo Metal Corporation

Ono Pharmaceutical Co., Ltd.

Nec Biglobe, Ltd.

Nec Informatec Systems, Ltd.

Takuya Nishio

Toshiro Tomida

Jun Haga

Norio Imai

Hirofumi Onishi

Kengo Hata

Masafumi Azuma

Yasuaki Tanaka

Masayuki Wakita

Tetsuya Sekiguchi

Takeshi Matsushita

Akiharu Ishida

Tatsuya Komagata

Hidetoshi Nohara

Akira Yamashita

Ryosuke Nakamura

Masaaki Kondo

Mitsuru Yoshida

Jin Yamashita

Hideyuki Sanada

Yoshimasa Narita

Yoshiaki Nakazawa

Toshio Mikiya

Masahiro Suzuki

Hiroshi Takebayashi

Satoshi Kato

Kaori Kawano

Kazunori Aoki

Shinichi Nomura

Masahito Tasaka

Kojiro Akiba

Suguhiro Fukushima

Osamu Yamamoto

Kunihiko Goto

Kosei Yoshida

Go Mase

Kazuyoshi Tashiro

Naoki Sasamura

Yuuji Aoyagi

Takayuki Sugimori

Goro Suzuki

Kohji Matsumoto

Kotaro Ohno

Shintaro Okura

Yasuyuki Okabe

Kouki Miyamoto

This cold-rolled steel sheet has a predetermined chemical composition, in which a metallographic structure of a t/4 portion, which is at a ¼ position of a sheet thickness t from a surface of the cold-rolled steel sheet in a sheet thickness direction, includes, by volume percentage, retained austenite: 2.5% or more and 10.0% or less, tempered martensite: 80.0% or more and 97.5% or less, ferrite and bainite: 0.0% or more and 15.0% or less in total, and martensite: 0.0% or more and 3.0% or less, and in a surface layer area at a position 25 μm away from the surface in the sheet thickness direction, an amount of solute Si is 0.30% or more and 1.50% or less by mass %, a volume percentage of ferrite in the metallographic structure is 0.0% or more and 20.0% or less, and a density of ferrite grains having a grain size of 15 μm or more is 0 grains/mmor more and 3,000 grains/mmor less.

Cold-rolled steel sheet and method for manufacturing same

A cold-rolled steel sheet has a predetermined chemical composition; a structure of the told-rolled steel sheet at a position which is ¼ of a sheet thickness from a surface contains, in a volume percentage, 80.0% or more of tempered martensite, more than 2.5% and less than 10.0% of residual austenite, 0% or more and 15.0% or less of ferrite and bainite in total, 0% or more and 3.0% or less of martensite, and the remainder structure. With respect to the above-described structure, a maximum value of a random specific intensity Iq is 4.0 or less, an average diameter of a region Rq which has an orientation within 10° from a crystal orientation in which the random specific intensity Iq is maximum is 10.0 μm or less, a surface density of the region Rq is 1000 pieces/mmor more, a tensile strength is 1310 MPa or more, a uniform elongation is 5.0% or more, and TS×λ is 35000 MPa·% or more.

Cold-rolled steel sheet and method for producing same

This cold-rolled steel sheet has a predetermined chemical composition, in which a metallographic structure of a t/4 portion, which is at a ¼ position of a sheet thickness t from a surface of the cold-rolled steel sheet in a sheet thickness direction has a predetermined structure, and in both an edge portion, which is an end portion of the cold-rolled steel sheet, and a center portion of the cold-rolled steel sheet, in the width direction, a metallographic structure of a 20 μm portion, which is at a position 20 μm from the surface in the sheet thickness direction, includes, by volume percentage, ferrite and bainite: 75.0% or more and 100.0% or less in total, and a metallographic structure of a 75 μm portion, includes ferrite and bainite: 0.0% or more and 15.0% or less in total.

Cold-rolled steel sheet and manufacturing method thereof

This high-strength cold-rolled steel sheet has a predetermined chemical composition, wherein a microstructure at a &#xbc; position of a sheet thickness from a surface includes predetermined ranges of volume percentages of tempered martensite, residual austenite, ferrite and bainite, and martensite, wherein a microstructure at a position 25 &#x3bc;m from the surface includes, predetermined ranges of volume percentage of ferrite and bainite, and martensite and tempered martensite, wherein in the position 25 &#x3bc;m from the surface, an average grain size of the martensite and the tempered martensite is 5.0 &#x3bc;m or less, a tensile strength is 1,310 MPa or more, and a uniform elongation is 5.0% or more, and R/t is 5.0 or less, the R/t being a ratio of a limit bend radius R in 90&#xb0; V-bending to a sheet thickness t.

High-strength cold-rolled steel sheet and manufacturing method therefor

A male coupling member detachably couplable to a female coupling member includes an outer coupling body having a first end inserted and fitted into the female coupling member, a second end opposite to the first end, and a passage extending from the first end to the second end. The male coupling member further includes an inner coupling body disposed coaxially with the outer coupling body at a position closer to the first end, and a filtration member detachably attached to the inner coupling body. The inner coupling body is attachable to and detachable from the outer coupling body from the first end. The filtration member is held in the passage when the inner coupling body is attached to the outer coupling body. The filtration member is detachable when the inner coupling body is detached from the outer coupling body.

Male coupling member

A hot-dip galvanized cold-rolled steel sheet has a tensile strength of 750 MPa or higher, a composition consisting, in mass percent, C: more than 0.10% and less than 0.25%, Si: more than 0.50% and less than 2.0%, Mn: more than 1.50% and 3.0% or less, and optionally containing one or more types of Ti, Nb, V, Cr, Mo, B, Ca, Mg, REM, and Bi, P: less than 0.050%, S: 0.010% or less, sol. Al: 0.50% or less, and N: 0.010% or less, and a main phase as a low-temperature transformation product and a second phase as retained austenite. The retained austenite volume fraction is more than 4.0% and less than 25.0% of the whole structure, and has an average grain size of less than 0.80 &#x3bc;m. A number density of retained austenite grains having a grain size of 1.2 &#x3bc;m or more is 3.0&#xd7;10/&#x3bc;mor less.

Hot-dip galvanized cold-rolled steel sheet and process for producing same

A high-strength cold-rolled steel sheet having excellent ductility and stretch flangeability includes: a chemical composition consisting, in mass %, C: 0.06 to 0.3, Si: 0.6 to 2.5%, Mn: 0.6 to 3.5%, P: at most 0.1%, S: at most 0.05%, Ti: 0 to 0.08%, Nb: 0 to 0.04%, total of Ti and Nb: 0 to 0.10%, sol.Al: 0 to 2.0%, Cr: 0 to 1%, Mo: 0 to 0.3%, V: 0 to 0.3%, B: 0 to 0.005%, Ca: 0 to 0.003%, REM: 0 to 0.003% and the remainder of Fe and impurities; a microstructure having a main phase including at least 40 area % in total of martensite and/or bainite; and a texture in which proportion of an average X-ray intensity in an {100}&#x3c;011&#x3e; to {211}&#x3c;011&#x3e; orientations relative to an average X-ray intensity of a random structure not having a texture is less than 6.

Cold-rolled steel sheet and process for manufacturing same

A coupling member is provided that includes a filtration member provided in a fluid passage in a coupling body to divide the fluid passage into an upstream pre-filtration passage section and a downstream post-filtration passage section. The filtration member includes a cylindrical part extending in the direction of a longitudinal axis and having a filtration portion. The cylindrical part divides a downstream portion of the pre-filtration passage section and an upstream portion of the post-filtration passage section from each other in the radial direction of the cylindrical part. Further, the fluid passage has a dust collecting part extending in the direction of the longitudinal axis from the downstream portion to a position closer to a downstream opening than the filtration portion of the filtration member. The dust collecting part is closed at a downstream end thereof.

Coupling member

A hot-rolled steel sheet having a composition comprising, in mass %, C: 0.06 to 0.3%, Si: 0.4 to 2.5%, Mn: 0.6 to 3.5%, P: at most 0.1%, S: at most 0.05%, Ti: 0 to 0.08%, Nb: 0 to 0.04%, a total content of Ti and Nb: 0 to 0.10%, sol.Al: 0 to 2.0%, Cr: 0 to 1%, Mo: 0 to 0.3%, V: 0 to 0.3%, B: 0 to 0.005%, Ca: 0 to 0.003%, REM: 0 to 0.003%, the remainder Fe and impurities, is cold rolled, then heated at an average heating rate of at least 15&#xb0; C./sec so that a proportion of an unrecrystallization of a region not transformed to austenite at a time of reaching (Acpoint+10&#xb0; C.) is at least 30 area %, and then held for 30 seconds at temperature of at least (0.9&#xd7;Acpoint+0.1&#xd7;Acpoint) and at most (Acpoint+100&#xb0; C.).

Process for manufacturing cold-rolled steel sheet

A check valve is provided which comprises a casing having a fluid passage, a valve seat member disposed in the fluid passage, and a valve element housing with a valve element disposed therein. The valve seat member has a valve seat surface on an end surface facing downstream. The valve element housing is a discrete member separate from the valve seat member and detachably secured to a downstream end portion of the same. The valve element is displaceable between a closed position and an open position.

Check valve

Provision of orally-available and low-toxic somatostatin receptor subtype 2 agonist. Since the compound represented by the general formula (I): wherein all symbols represent the same meanings as those described in the description, a salt thereof, an N-oxide thereof, a solvate thereof, or a prodrug thereof is non-peptidic low-molecular compound which has strong somatostatin receptor subtype 2 agonist activity, the compound is orally-available. Additionally, since the compound is low-toxic, the compound is useful for the prevention and/or treatment of the somatostatin related diseases such as acromegaly or gastrointestinal obstruction.

Compound having agonistic activity on somatostatin receptor, and use thereof for medical purposes

A method for producing a high-tensile cold-rolled steel sheet includes subjecting a slab having a composition containing C: more than 0.020% and less than 0.30%, Si: more than 0.10% and 3.00% or less, and Mn: more than 1.00% and 3.50% or less to hot rolling wherein the roll draft of the final one pass is higher than 15%, and rolling is finished in the temperature region of Arpoint or higher, optionally annealing wherein the hot-rolled steel sheet is heated to 300&#xb0; C. or higher after being cooled to 780&#xb0; C. or lower, coiling higher than 400&#xb0; C. or lower than 400&#xb0; C., cold rolling the hot-rolled steel sheet or the annealed steel sheet, and annealing wherein the cold-rolled steel sheet is soaked in the temperature region of (Acpoint&#x2212;40&#xb0; C.) or higher, cooling to 500&#xb0; C. or lower and 300&#xb0; C. or higher, and holding in that temperature region for 30 seconds or longer.

Method for producing cold-rolled steel sheet

In order to reduce a pressure loss in a check valve and simplify a manufacturing process, a check valve () configured to be disposed in piping of fluid is provided, which includes a valve housing () including a valve element () and a valve seat () therein, a casing () that is configured to place the valve housing therein, in which a casing flow path () is provided between the casing and the valve housing to make a flow of the fluid in an axial direction of the valve housing. In the valve housing, a communicating hole () and sealing portion () are formed. The communicating hole that is formed through the valve housing in a thickness direction thereof introduces the fluid, which flows through between the valve element and the valve seat at the open position of the check valve, into the casing flow path. The sealing portion that is provided on an outer surface of the valve housing upstream of the communicating hole in a flow direction of the fluid in the casing flow path, is configured to come into contact with an inner surface of the casing to seal the casing flow path and position the valve housing in a radial direction perpendicular to the axial direction relative to the casing.

Check valve and receptacle structure

A steel sheet suitable as a starting material for a vehicle impact absorbing member with high absorption of impact energy and resistance to cracking contains, by mass %, C: 0.08-0.30%, Mn: 1.5-3.5%; Si+Al: 0.50-3.0%, P: 0.10% or less, S: at most 0.010%, and N: at most 0.010%, and optionally, one or more types selected from Cr: at most 0.5%, Mo: at most 0.5% , B: at most 0.010%, Ti: less than 0.04%, Nb: less than 0.030%, V: less than 0.5%, Ca: at most 0.010%, Mg: at most 0.010%, REM: at most 0.050%, and Bi: at most 0.050%. The microstructure contains, by area %, bainite: more than 50%, martensite: 3-30%, and retained austenite: 3-15%, the remainder comprising ferrite having an average grain diameter of less than 5 mm. The product of uniform elongation and hole expansion ratio is at least 300%and 5% effective flow stress is at least 900 MPa.

Steel sheet suitable for impact absorbing member and method for its manufacture

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Tokyo, Japan

Takuya Nishio