Kobe Steel, Ltd.

Kabushiki Kaisha Kobe Seiko Sho

Other

Sun Aluminium Industries, Ltd.

Eiichiro Yoshikawa

Naoya Fujiwara

Kenji Yamamoto

Hiroshi Kawashima

Koji Inoue

Nobuaki Akagi

Yoshihiro Ito

Mitsuhiro Sato

Yasuhiro Okamura

Hisashi Mitamura

Kenichi Inoue

Kazuto Okada

Koji Yamamoto

Kazuhisa Fujisawa

Akitoshi Fujisawa

Hiroyuki Mitani

Hiroshi Kawai

Hiroyuki Mori

Takashi Yashiki

Hiroshi Hashimoto

Hirofumi Hojo

Kyoji Zaitsu

Osamu Ozaki

Yuji Taniguchi

Takayuki Kogishi

Yozaburo Takayama

Mikio Ono

Mika Anzai

One aspect of the present invention is a lubricant to be incorporated into a powder metallurgical mixed powder containing an iron-based powder. The lubricant includes a flaky organic material having an average particle diameter of from 0.1 &#x3bc;m to less than 3 &#x3bc;m. Another aspect of the present invention is a powder metallurgical mixed powder which contains an iron-based powder and the lubricant. Yet another aspect of the present invention is a method for producing a sintered compact. The method includes the step of mixing materials to give a powder metallurgical mixed powder containing an iron-based powder and the lubricant. The powder metallurgical mixed powder is compacted using a die to give a powder compact. The powder compact is sintered to give a sintered compact.

Lubricant, mixed powder for powder metallurgy, and method for producing sintered body

The present invention provides a binder which has excellent effect on suppression of segregation or dust emission, while exhibiting excellent fluidity both at ordinary temperatures and at high temperatures. The present invention is a binder which is blended for use in a mixed powder for powder metallurgy, said mixed powder containing an iron-based powder and an auxiliary starting material powder. This binder is characterized by being composed of one or more polymers that are selected from among butene polymers having a melting point of from 50&#xb0; C. to 85&#xb0; C. (inclusive) and a heated melt fluidity at 190&#xb0; C. of from 2.0 g/10 minutes to 3.6 g/10 minutes (inclusive) and methacrylic acid polymers having a weight average molecular weight of 1,000,000 or less.

Binder for powder metallurgy, mixed powder for powder metallurgy, and sintered body

Provided is a reactor that enables high inductance to be generated with stability in a wide current range, while minimizing noise, processing cost, and eddy-current loss. The reactor (D) has the ratio (t/W) of the width (W) to the thickness (t) of a conductive member that composes an air-core coil configured to be 1 or less, and preferably, 1/10 or less. Furthermore, the reactor also has the absolute value of a value ((L&#x2212;L)/L) that has had: the difference (L&#x2212;L) between; the space interval (L) between an inner wall face of a first core member () and an inner wall face of a second core member (), at the innermost circumference position of the air-core coil (); and the space (L) between the inner wall face of the first core member () and the inner wall face of the second core member (), at the outermost circumference position of the air-core coil (); divided by an average value (L); configured to be 1/50 or less. The ratio (R/W) of the radius (R), from the axis-center (O) of the air-core coil () to the outer circumference of the air-core coil (), to the width (W) of the air-core coil () (conductive member), is 2=R/W=4.

Reactor

The present invention provides a titanium material having high-temperature oxidation resistance at high temperatures above 800&#xb0; C. and an exhaust pipe made of this titanium material for an engine. A titanium alloy contains 0.15 to 2% by mass Si, has an Al content below 0.30% by mass, and has equiaxial structure having a mean grain size of 15 &#x3bc;m or above. The high-temperature oxidation resistance of the titanium alloy at high temperatures above 800&#xb0; C., such as 850&#xb0; C., is improved by means including adding Nb, Mo and Cr in combination with Si to the titanium alloy, forming equiaxial structure of coarse grains, creating acicular structure, Si-enrichment of a surface layer of the titanium alloy, and reducing impurities including copper, oxygen and carbon contained in the titanium alloy.

Titanium Material and Exhaust Pipe for Engine

The present invention provides a resin-coated metal plate suitable as a cover plate for use in perforating a printed-wiring board with a drill, capable of effectively preventing the heat generation of drill bits and the scattering of chips while sufficiently performing lubrication and discharging the chips, to highly efficiently form a high-quality perforated-hole with excellent smoothness of the inner wall thereof while reducing the risk of breakage of the drill and eliminating any surface tackiness to achieve excellent operating performance and storage stability. The resin-coated metal plate of the present invention comprising a metal base plate, and a film made of a thermoplastic resin and formed on at least one of the opposite surfaces of said metal base plate to cover thereover, said thermoplastic resin being substantially water-insoluble, wherein said thermoplastic resin has: a melting peak temperature measured according to JIS K7121 ranging from 60&#xb0; C. to 120&#xb0; C.; a melt viscosity ranging from 1&#xd7;10P to 1&#xd7;10P under a shear rate of 200 mm/sec, and from 5&#xd7;10P to 5&#xd7;10P under a shear rate of 3000 mm/sec, in the state when said thermoplastic resin is molten at 150&#xb0; C.; and a durometer D hardness measured according to JIS K7215 ranging from 20 to 45.

Resin-coated metal plate for use in perforating printed-wiring board

A resin-coated metal plate used as a protective plate in drilling a printed wiring board has a metal plate and a resin film including a thermoplastic resin coated on at least one surface of the metal plate. A melting peak temperature of the thermoplastic resin is in a range of 60-120&#xb0; C., and in a TMA curve, a temperature difference exhibited by the thermoplastic resin is within a range of 5&#xb0; C. to 30&#xb0; C. in a period while penetration of the probe is changed from 10% to 100% of the resin thickness in a temperature range of 20&#xb0; C. to 200&#xb0; C.

Resin-coated metal plate and method of drilling printed wiring board using the metal plate

An object of the present invention is to provide a bladder which is unlikely to have a shapal variation along the inner wall surface of the tire and can satisfactorily extend along the inner wall surface of the tire. An inventive bladder is used to press the inner wall surface of the tire by a pressurized heating medium during the vulcanization of a green tire and is comprised of a fabric layer (purl stitched fabric layer ) and rubber layers (silicone rubber layers ) placed one over another. Elongation rates of the fabric layer in warp direction and in weft direction both exceed 15% and satisfy: 0.4&lE;elongation rate in weft direction/elongation rate in warp direction &lE;6.0. Since the fabric layer has good extensibility, it can elongate with the rubber layers.

Bladder and tire producing method

A metal plate coated with a lubricating resin is coated with a lubricating resin having a modified polyamide ({circle around (1)}) and a crosslinking curing agent ({circle around (2)}) of the modified polyamide ({circle around (1)}) on at least one side face of the metal plate. At this time, the compounding ratio of the modified polyamide ({circle around (1)}) and the above-described crosslinking curing agent ({circle around (2)}) is preferably (60:40) to (15:85) by mass ratio converted to solid content. Furthermore, according to requirement, an inorganic powder filler ({circle around (3)}) may be added to the resin composition.

Metal plate coated with lubricating resin and drilling processing method of printed wiring board use thereof

Disclosed herein is a fiber optic rod having good mechanical properties (such as tensile strength and tensile modulus) and good water resistance and a process for producing the same. The fiber optic rod is formed by impregnating, followed by curing, a fibrous reinforcement with a resin composition composed of epoxy (meth)acrylate oligomer and xylene-formaldehyde resin, or epoxy (meth)acrylate oligomer and acid anhydride-modified epoxy (meth)acrylate (which is obtained by modifying epoxy (meth)acrylate oligomer with an organic acid intramolecular anhydride) as curable components and a reactive diluent of monofunctional and/or multifunctional (meth)acrylate and ultraviolet-sensitive polymerization initiator as essential components.

Fiber optic rod and production thereof

Growing community of inventors

Kobe, Japan

Eiichiro Yoshikawa