Nkk Corporation

Other

Jfe Steel Corporation

Kanebo, Limited

Nippon Suisan Kaisha, Ltd.

Taikisha Ltd.

Kyowa Tecnos Co., Ltd.

Bihoku Funka Kogyo Co., Ltd.

Tadashi Inoue

Tomoyoshi Okita

Kiyoshi Tsuru

Michihito Hiasa

Sadanori Imada

Hiroyasu Kikuchi

Toru Inazumi

Tetsuo Yamamoto

Hitoshi Misao

Katsuhisa Yamauchi

Naokazu Yamamura

Shinichi Okimoto

Atsushi Watanabe

Takeshi Fujita

Teruyuki Hasegawa

Yoshimasa Funakawa

Hitoshi Kato

Kohei Hasegawa

Yasuhide Ishiguro

Hidekazu Yoshizawa

Takeo Ishii

Reiko Sugihara

Yoshihiro Hosoya

Takamasa Kawai

Yukio Kimura

Koichiro Fujita

Yoichi Motoyashiki

Masayuki Kinoshita

Hirohisa Haiji

Yoshiteru Kikuchi

Fusato Kitano

Hidetoshi Matsuno

Hiroshi Nakata

Yoshiaki Shimizu

Masaya Morita

Eiko Yasuhara

Masahiro Iwabuchi

Hisao Nakajima

Akira Hiura

Kazuyoshi Morita

Tsuneo Kada

Takayuki Odake

Tomoyoshi Ohkita

Sukeyoshi Kato

Tetsuzo Tsujimura

Naotsugu Yamanouchi

Yorihiki Matsubara

Takeshi Nakahara

Nobuko Mineji

Satoshi Ishijima

Michihiro Hiasa

A framing member forming a frame of a factory building is provided with a slit for attaching a holder on one side face of the framing member, the slit extending in a longitudinal direction of the framing member, the slit is provided with a detachment prevention mechanism configured to exert an action of preventing an insertion piece of the holder from being detached and to fix the holder to the framing member, along with an insertion of the insertion piece into the slit, and the holder is provided with a pinching piece configured to pinch an end edge portion of a wall panel between the pinching piece and the framing member to fix the wall panel to the framing member, along with the insertion of the insertion piece into the slit.

Factory building assembly structure and method for assembling factory building using the same

A cold-rolled steel sheet has a composition containing, by mass percent, 0.0040% or less of C, 0.02% or less of Si, 0.14% to 0.25% of Mn, 0.020% or less of P, 0.015% or less of S, 0.0040% or less of N, 0.020% to 0.070% of Al, 0.005% to 0.030% of Nb, 0.005% to 0.030% of Ti, (0.0003% to 0.0010% of the equivalent amount of solid solution B (from which the amount of B forming BN has been subtracted)), and the balance composed of Fe and inevitable impurities, wherein even when the rolling reduction of cold rolling is 85% or less, the average grain size of a ferrite structure is reliably 12.0 &#x3bc;m or less, and the relationship &#x2212;0.20&#x2266;&#x394;r&#x2266;0.20 can be reliably satisfied and which has an excellent earing property.

Cold-rolled steel sheet, method of producing the same, battery, and method of producing the same

A method for manufacturing a steel sheet comprising continuously casting a steel containing 0.04 to 0.2 wt. % C, 0.25 to 2 wt. % Si, 0.5 to 2.5 wt. % Mn, and 0.1 wt. % or less Al to form a slab; hot-rolling by rough-rolling the slab to form a sheet bar and finish-rolling the sheet bar with a reduction in thickness at the final stand of less than 30%, the finish-rolling being completed at a temperature from the Ar transformation point to the Ar transformation point &plus;60&deg; C.; primary-cooling the hot-rolled steel sheet, the primary cooling being started within 1 second after the completion of hot-rolling and conducting the cooling at a cooling speed of higher than 200&deg; C./sec down to a temperature of Ar &minus;30&deg; C. to the Ar transformation point; slow cooling or air-cooling the primary-cooled steel sheet at a temperature of the Ar transformation point to the Ar transformation point at 10&deg; C./sec or less for 2 seconds or more; secondary-cooling the steel sheet after the slow cooling or the air-cooling at 30&deg; C./sec or more; and coiling the secondary-cooled steel sheet at 300&deg; C. or less.

Method for manufacturing a steel sheet

The present invention relates to a high strength steel sheet consisting essentially of 0.04 to 0.1% C, 0.5% or less Si, 0.5 to 2% Mn, 0.05% or less P, 0.005% or less 0, 0.005% or less S, by weight, having 10 &mgr;m or less of average ferritic grain size, and 20 mm/mm or less of generation frequency A, which generation frequency A is defined as the total length of a banded secondary phase structure observed per 1 mm of steel sheet cross section along the rolling direction thereof. The steel sheet is manufactured by, for example, a method comprising the steps of: hot-rolling a continuously cast slab having the composition described above at temperatures of Ar transformation point or above directly or after reheating thereof; and cooling the hot-rolled steel sheet within 2 seconds down to the temperatures of from 600 to 750&deg; C. at cooling speeds of from 100 to 2,000&deg; C./sec, followed by coiling the cooled steel sheet at temperatures of from 450 to 650&deg; C. The present invention provides a high strength steel sheet having strengths of 340 MPa or more and having excellent stretch flanging performance, ductility, and shock resistance, providing a sufficient coil shape with good surface properties, even when hot dip zinc-coating is applied.

High strength steel sheet and method for manufacturing the same

The method for manufacturing steel sheet comprises the steps of: rough-rolling to form a sheet bar; finish-rolling the sheet bar to form a steel strip; applying primary cooling and secondary cooling to the finish-rolled steel strip; and coiling the secondary-cooled steel strip. The primary cooling is conducted at cooling speeds of 120&deg; C./sec or more down to the temperatures of from 500 to 800&deg; C. The secondary cooling is conducted at cooling speeds of less than 60&deg; C./sec.

Steel sheet and method for manufacturing the same

High tensile strength hot-rolled steel sheet and method for manufacturing the same

The method for manufacturing steel sheet comprises the steps of: forming a sheet bar; forming a steel strip; primary-cooling; air-cooling; secondary-cooling; and coiling. The sheet bar is finish-rolled at finish temperatures of (Ar transformation point &minus;20&deg; C.) or more. The primary cooling cools the finish-rolled steel strip at cooling speeds of more than 120&deg; C./sec down to the temperatures ranging from 500 to 800&deg; C.

The method for manufacturing cold-rolled steel sheet comprises the steps of: rough-rolling a slab using a rough-rolling unit; finish-rolling the sheet bar using a continuous hot finishing-rolling mill; cooling the hot-rolled steel strip on a runout table; coiling thus cooled hot-rolled steel strip; and applying picking, cold-rolling the hot-rolled steel strip, and final annealing to the cold-rolled steel strip.

Method for manufacturing cold-rolled steel sheet

Cold-rolled steel sheet and galvanized steel sheet, which are excellent in formability, panel shapeability, and dent-resistance, and method of manufacturing the same

The present invention provides a method of manufacturing a cold rolled steel sheet and a hot-dip zinc-coated steel sheet having excellent surface properties, an excellent resistance to natural aging and an excellent dent resistance of panel and, thus, adapted to the manufacture of steel sheet for outer panels of vehicles. The method comprises the steps of preparing steel consisting of 0.005 to 0.012% by weight of C, 0.01 to 0.4% by weight of Si, 0.15 to 1.0% by weight of Mn, 0.01 to 0.08% by weight of P, at most 0.02% by weight of S, 0.01 to 0.1% by weight of sol. Al, at most 0.004% by weight of N, and at least one element selected from the group consisting of 0.01 to 0.2% by weight of Nb and 0.04 to 0.1% by weight of Ti, and satisfying the condition 1.2&lE;(12/93) (Nb%/C%)&plus;(12/48) (Ti*%/C%)&lE;2.5, applying a hot rolling and a cold rolling to the steel, soaking the cold rolled steel sheet at T(&deg; C.) meeting a formula Ac3&gE;T(&deg; C.)&gE;157log(X)&plus;737, and cooling the steel sheet after the soaking step at a cooling rate meeting a formula R(&deg; C./sec)&lE;&minus;35&plus;162/X. Ti*% (noted above)&equals;Ti%&minus;(48/14)N%&minus;(48/32)S%. When Ti* in the above equation is not larger than 0, Ti* is regarded as 0.

Method of manufacturing cold rolled steel sheet excellent in resistance of natural aging and panel properties

A high-strength thin plate, such as for IC lead frames, of an iron-nickel-cobalt alloy which is able to withstand repeated bending and is corrosion resistance and etchable, the alloy containing 27 to 30 wt. % N:, 5 to 18 wt. % Co, 0.10 to 3.0 wt. % Mn, 0.10 wt. % or less Si, 0.010 to 0.075 wt. % C, 0.001 to 0.014 wt. % N, less than 2.0 ppm H, 0.0040 wt. % or less S, 0.004 wt. % or less P, 0.0050 wt. % or less O, 0.01 to 0.06 wt. % Cr, 0.01 to 1.0 wt. % Mo and the balance being Fe and unavoidable impurities wherein 63.5 wt. %.ltoreq.2Ni+Co+Mn.ltoreq.65 wt. % for Co&lt;10 wt. % and 69.5 wt. %.ltoreq.2Ni+Co+Mn.ltoreq.74.5 wt. % for Co&gt;10 wt. %.

High-strength thin plate of iron-nickel-cobalt alloy excellent in

An object of this invention is to obtain a calcium agent for plants, which enters into cells of a plant so as to derive the physiological activity basically for DNA and RNA activation and to enhance the absorbability of calcium into the living plant. Therefore, the calcium agent for plants, contains, as main components, water-soluble low molecular weight chitosan having an average molecular weight of 500 to 30000 consisting of chitosan and/or chito-oligosaccharide and/or derivatives thereof, an inorganic substance including calcium element and/or a water-soluble organic substance including calcium element, and if necessary, water-soluble organic acid. By administering this calcium agent, lime deficiency diseases of plants can be prevented.

Calcium agent for plants

A Ni--Fe magnetic alloy consists essentially of: 77 to 80 wt. % Ni, 3.5 to 5 wt. % Mo, 1.5 to 3 wt. % Cu, 0.1 to 1.1 wt. % Mn, 0.1 wt. % or less Cr, 0.003 wt. % or less S, 0.01 wt. % or less P, 0.005 wt. % or less 0, 0.003 wt. % or less N, 0.02 wt. % or less C, 0.001 to 0.05 wt. % Al, 1 wt. % or less Si, 2.6-6 of the weight ratio of Ca to S, (Ca/S), and the balance being Fe and inevitable impurities, satisfies an equation of 3.2.ltoreq.(2.02.times.�Ni!-11.13.times.�Mo!-1.25.times.�Cu!-5.03.times.�M n!)/(2.13.times.�Fe!).ltoreq.3.8; and has a Mo segregation ratio defined by a seregration equation satisfying 5% or less, the seregration equation being .vertline.(Mo content in a segregation region-Mo average content)/(Mo average content).vertline..times.100%. A method for producing a magnetic Ni--Fe alloy comprises the steps of: a first heating step of heating an alloy ingot to 1200.degree. to 1300.degree. C. for 10 to 30 hrs; slabbing the heated ingot at a finishing temperature of 950.degree. C. or more to produce a slab; a second heating step of heating the slab at 1150.degree. to 1270.degree. C. for 1 to 5 hrs; and hot rolling the heated slab at a finishing temperature 950.degree. C. or more.

Ni-Fe magnetic alloy and method for producing thereof

A method for manufacturing an alloy sheet for a shadow mask is provided which includes: (i) annealing a hot-rolled sheet containing Fe and Ni at a temperature of 910.degree. to 990.degree. C.; (ii) cold-rolling the annealed hot-rolled sheet from step (i) to produce a cold-rolled sheet; (iii) crystallization annealing of the cold-rolled sheet from step (ii); (iv) cold-rolling the annealed cold rolled sheet from step (iii); (v) finish recrystallization annealing step of the cold-rolled sheet of step (iv); (vi) finish cold-rolling of the sheet from step (v) at a cold-rolling reduction ratio R (%) satisfying the following equations: 16.ltoreq.R.ltoreq.75 and 6.38 D-133.9.ltoreq.R.ltoreq.6.38 D-51.0 wherein D is the average austenite grain size in .mu.m; (vii) softening annealing the sheet from step (vi) at a temperature of 720.degree. to 790.degree. C. for 2 to 40 minutes before press-forming and at conditions of temperature T in .degree.C. and time t in minutes which satisfy the following equation :

Method of producing an alloy sheet for a shadow mask

A thin Fe--Ni alloy sheet for shadow mask consists essentially of Ni of 34 to 38 wt. %, Si of 0.05 wt. % or less, B of 0.0005 wt. % or less, O of 0.002 wt. % or less and N of 0.0015% or less, the balance being Fe and inevitable impurities; said alloy sheet after annealing before press-forming having 0.2% proof stress of 28.5 kgf/mm.sup.2 or less; and a degree of {211} plane on a surface of said alloy sheet being 16% or less. And further modified similar alloy sheets are also provided. Further, a method for producing a thin Fe--Ni alloy sheet for shadow mask comprises the steps of: (a) hot-rolling of a slab into a hot-rolled alloy strip; (b) hot-rolled sheet annealing of the hot-rolled strip at 910 to 990.degree. C.; (c) cold-rolling of the annealed hot-rolled strip into a cold-rolled strip; (d) recrystallization annealing of the cold-rolled strip; (e) finish cold-rolling of the recrystallization annealed strip at a finish cold reduction ratio in response to austenite grain size D(D.mu.m) yieleded by the recrystallization annealing, the finish cold reducration ratio(R) being within a region enclosed by a range of R of 16 to 75 and a range of D of 6.38D-133.9.ltoreq.R.ltoreq.6.38D-51.0 and (f) annealing of the finish cold-rolled strip on conditions of a temperature of 720.degree. to 790.degree. C., a time of 2 to 40 min. and T.gtoreq.-53.8 logt+806, where T(.degree.C.) is the temperature of the annealing. And further modified similar methods are also provided.

Thin Fe-Ni alloy sheet for shadow mask

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Kawasaki, Japan

Tadashi Inoue