Kobe Steel, Ltd.

Kabushiki Kaisha Kobe Seiko Sho

Takayasu Fujiura

Naoyuki Tashiro

Naoki Kikuchi

Seiji Zenke

Hironori Suzuki

Koji Inoue

Akio Sugimoto

Hiroshi Hashimoto

Atsushi Yamamoto

Kaduya Takamura

Kazuya Takamura

Kazuhisa Fujisawa

Tatsuya Tanaka

Maki Hamaguchi

Naoya Fujiwara

Tsutomu Nagaoka

Katsuyuki Iijima

Hodaka Miura

Kentaro Okuno

Yasuko Yakou

Satoshi Nishida

Eishi Kusaka

Tetsuya Goto

Yuuji Taniguchi

Takeshi Yoshihara

Masaki Kojima

Kiyoshi Horie

Nagoya Fujiwara

Yasuhiro Sakurai

Fujiwara Naoya

A process for producing an iron ore having a sulfur content reduced to 0.08% or less, which includes a step of subjecting an iron ore containing sulfur in an amount of more than 0.08% and 2% or less to a flotation. The flotation satisfies any one of the following (1) to (3): (1) a xanthate-based compound and a salt of an amine compound are used as collectors, (2) a xanthate-based compound is used as a collector and a substance which releases a sulfur ion in water is used as an activator, or (3) a xanthate-based compound and a salt of an amine compound are used as collectors and a substance which releases a sulfur ion in water is used as an activator.

Production method for low-sulfur iron ore

Provided are a process and an apparatus for producing a fiber-reinforced thermoplastic resin tape, the process and the apparatus being capable of preventing fiber cut from occurring at the start of production of the fiber-reinforced thermoplastic resin tape. The provided process includes a resin impregnation step of opening a fiber bundle and impregnating the fiber bundle with molten thermoplastic resin and a through-nozzle passing step of passing the fiber bundle having undergone the resin impregnation step through a slit formed in a nozzle. The through-nozzle passing step includes setting, at the start of production, a gap dimension of the slit to a dimension larger than a normal dimension and changing the gap dimension of the slit to the normal dimension when a predetermined condition is satisfied, after the production start.

Process and apparatus for producing fiber-reinforced thermoplastic resin tape

A method for connecting a tail end portion of a reinforcing fiber bundle of a preceding wound body to a front end portion of a reinforcing fiber bundle unwound from a new wound body by blowing pressurized air to both of the ends to unravel and entwine both of the reinforcing fiber bundles, wherein the method includes a preparation step for adjusting the amount of a sizing agent contained in the front end of the reinforcing fiber bundle unwound from the new wound body and the tail end of the preceding wound body to 4 wt % or less, and the reinforcing fiber bundles are connected after the preparation step.

Method for connecting reinforcing fiber bundles, method for producing long fiber reinforced thermoplastic resin pellet, and wound body

To provide continuous fiber-reinforced thermoplastic pellets having a good dispersion property of a reinforcing fiber bundle in injection molded articles and capable of achieving a satisfactory outward appearance of the injection molded articles and satisfying a mechanical strength of the injection molded articles by fully exerting the reinforcing effect, and a manufacturing method of the same. In continuous fiber-reinforced thermoplastic resin pellets manufactured by letting a long reinforcing fiber bundle be impregnated with molten thermoplastic resin and pultruding the resin-impregnated reinforcing fiber bundle with twisting, followed by the cutting of a rod-shaped composition formed of the twisted resin-impregnated reinforcing fiber bundle into pellets, a volume filling ratio V, which is a proportion of a cross section area of the reinforcing fiber bundle in a cross section area of a pellet cross section in a direction perpendicular to a pellet longitudinal direction, is in a range of 70% to 20%, and a twisting pitch P given by P=L/d (where L is a traveling length of a twist in a rod-shaped composition longitudinal direction per rotation of the rod-shaped composition, and d is a diameter of a circle comparable to an area of a rod-shaped composition cross section) is in a range of 2.5 to 36 (m/rev&#xb7;m).

Continuous fiber-reinforced thermoplastic resin pellets and manufacturing method of the same

A busbar of the present invention increases yield per metal material in comparison to plate-shaped bus bars, enables provision of protrusions on a member located inside relative to a conductor, and enables formation of the busbar in a bent shape. The busbar of the present invention is provided with a busbar insulator (), a busbar conductor (), a busbar insulator (), a busbar conductor (), and a busbar insulator () formed outside of a busbar center conductor (). These conductors and insulators are arranged alternately from the inner side towards the outer side in a radial direction (R) that intersects at right angles with the axial direction (A) of the bus bar. The busbar conductors () are provided with openings () along the whole length in the axial direction (A) thereof.

Bus bar, method of manufacturing the same, and bus bar and connector

An apparatus for manufacturing a continuous fiber-reinforced thermoplastic resin pellet includes a roving package constituted by a cylindrical package of a reinforcing fiber bundle, a reinforcing fiber bundle delivery device, an impregnation die, a withdrawing device disposed on a downstream side of the impregnation die, and a cutter member. The reinforcing fiber bundle delivery device includes a plurality of collapse suppressing members adapted to be pushed radially outwards against an inner periphery surface of the roving package to suppress collapse of winding layers and a pusher for displacing said plural collapse suppressing members radially outwards following the inner periphery surface of the roving package which inner periphery surface shifts radially outwards gradually as the reinforcing fiber bundle is drawn out in a successive manner.

Method and apparatus for manufacturing continuous fiber-reinforced thermoplastic resin pellet

Disclosed is a method for producing long-fiber-reinforced thermoplastic resin pellets, comprising pultruding a plurality of reinforced fiber bundles in a molten thermoplastic resin while twisting the plurality reinforced fiber bundles to form a strand in which the reinforced fibers are coated with the thermoplastic resin, and cutting the strand to a predetermined length to form pellets, wherein the strand is pultruded under the conditions that the melt viscosity of the thermoplastic resin is adjusted such that the melt flow rate is 500 to 1500 g/10 min, and the twisting angle &#x3b8; of the reinforced fiber bundles with respect to the pultruding direction of the strand is set as follows: 0&#xb0;&#x3c;&#x3b8;&#x2266;50&#xb0;. As a result of this configuration, according to the method for producing long-fiber-reinforced thermoplastic resin pellets, pellets in which reinforced fibers are easily untwisted when the pellets are melted so that the reinforced fibers can be uniformly dispersed in molded articles can be produced with high productivity.

Method for producing long fiber reinforced thermoplastic resin pellets

A projected end of a bus bar (), including projection portions (A,B,C,D,E,F), and a recessed connector (), including a cylindrical portion (A), a recess portion (B), a cylindrical portion (C), a recess portion (D), a cylindrical portion (E), and a recess portion (F), are engaged with each other, thereby enabling the bus bar () and the connector () to electrically connect with each other. That is, only inserting the bus bar () into the connector () makes an electrical connection possible, so it is not necessary, for example, to fasten the terminal with a screw. Therefore, this facilitates the connection between the bus bar () and the connector ().

Bus bar and connector

A method and apparatus for manufacturing a continuous fiber-reinforced thermoplastic resin pellet are provided which can smoothly carry out a continuous drawing-out operation for a reinforcing fiber bundle (continuous fiber-reinforced resin strand). With respect to a terminal end of a reinforcing fiber bundle A of a roving package being exhausted and a front end of a reinforcing fiber bundle B of a new roving package, fiber quantity-halved end portions Aand Beach about half of the original fiber quantity are formed respectively, then reinforcing filaments in those fiber quantity-halved end portions are entangled by an air splicer to form an entangled portion C, and reinforcing filaments in a portion downstream of the fiber quantity-halved end portion in the reinforcing fiber bundle B of the new roving package are entangled by an air splicer to form an entangled portion C

The invention provides a natural fiber-reinforced thermoplastic resin injection molding having an excellent ability to discharge static electricity. The natural fiber-reinforced thermoplastic resin injection molding is obtained by injection-molding with using natural fiber-reinforced thermoplastic resin pellets as a molding feedstock containing natural fibers as reinforcing fibers, has a natural fiber content of from 20 to 60 wt %. The natural fibers have an average length of from 1.5 to 4.0 mm. The natural fiber-reinforced thermoplastic resin injection molding has an electrostatic voltage half-life, as determined by the half-life measurement method specified in JIS L 1094, of less than 40 seconds.

Natural fiber-reinforced thermoplastic resin injection molding

A lubricant for powder metallurgy which includes a polyhydroxycarboxylic acid amide. The lubricant improves both flowability and lubricity, irrespective of a presence or absence of any complicated pretreatment step.

Lubricant for powder metallurgy, powdery mixture for powder metallurgy, and process for producing sinter

The present invention relates to a mixed powder for powder metallurgy containing an iron-base powder and a carbon supply component, in which the carbon supply component contains a graphite powder and a carbon black, and in which a mixing ratio of the graphite powder to the carbon black is in the range of 25 to 85 parts by weight to 75 to 15 parts by weight; and a mixed powder for powder metallurgy containing an iron-base powder and a carbon supply component, in which the carbon supply component contains, as a main component, a carbon black having a dibutyl phthalate absorption of 60 mL/100 g or less and a nitrogen absorption specific surface area of 50 m/g or less. The mixed powder for powder metallurgy of the invention is less in the dust generation and segregation of the carbon supply component. Additionally, when the mixed powder for powder metallurgy of the invention is used, a green compact and a sintered body excellent in the mechanical property can be produced.

Mixed power for powder metallurgy, green compact thereof, and sintered body

A two-phase glass-like carbon member has, in combination, a porous glass-like carbon base, and a dense glass-like carbon surface layer formed on the porous glass-like carbon base. The porous glass-like carbon base can be formed in a large thickness. The dense glass-like carbon surface layer is superior to the porous glass-like carbon base in gas impermeability, surface hardness and resistance to dusting. The dense glass-like carbon surface layer supplements disadvantages of the porous glass-like carbon base. The two-phase glass-like carbon member can be in a large thickness exceeding 5 mm and in a complicated shape.

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Kobe, Japan

Takayasu Fujiura