Nippon Steel Corp (Total 353 Patents Found)

In the production of titanium and (α+β)-type titanium alloy materials, a material hydrogenated in an amount of 0.02 to 2% by weight of hydrogen is worked at a temperature of 450 to 900°C at a reduction of more than 60%, and the material is dehydrogenated and annealed in vacuum. The working of the titanium material i...
An apparatus for securing a work roll (101) in a rolling mill is proposed. This apparatus is of a type provided with a pair of roll holders (102) respectively abutting on the flat surfaces of each work roll (101) so as to be adapted to clamp the work roll (101) by means of clamping means (122,123). A feature resides in...
A process for producing a thin-webbed H-beam steel having a web thinner than flanges, which comprises the steps of: forcibly water cooling the outer surface of the flanges during an intermediate hot rolling prior to a final hot rolling, so that the flange outer surfaces are cooled to a temperature of 700°C or lower; t...
Un coude de section circulaire présentant une paroi d'épaisseur uniforme est utilisé dans une partie cintrée d'un pipeline conventionnel d'une installation, où l'on requiert une résistance accrue de la partie cintrée contre la pression interne et le moment de flexion. La présente invention se ra...
Disclosed is a stainless steel foil for an automobile exhaust gas-purifying catalyst, which is a cold-rolled, rapidly solidified steel foil comprising 1 to 20% by weight, preferably 5.5 to 20% by weight, of Al, if necessary, 12 to 45% by weight of Ni, 12 to 30% by weight of Cr, up to 2% by weight of Mn, up to 3% by wei...
A process for producing a steel strip having an excellent cast metal toughness from a thin cast chromium-containing stainless steel containing at least 0.05 % in total of niobium, titanium and aluminum, which process comprises casting a stainless steel containing 13-25 % of chromium and at least 0.05 % in total of one ...
A method of producing non-oriented magnetic steel plate that comprises hot-rolling high-purity steel and adjusting the grain size together with the dehydrogenation treatment to produce a uniform ferrite grain diameter and impart uniform magnetic properties in a low magnetic field through the thickness direction....
A steel material for induction-hardened shaft parts which is prevented from causing hardening crack and has an excellent torsional strength of 160 kgf/mm<2> or above, and a shaft part made therefrom. The steel material comprises: 0.35-0.70 % of carbon, over 0.15 to 2.5 % of silicon, 0.2-1.5 % of manganese, 0.20-1...
A bonded element of superconductive oxide materials having a high current density and a method for manufacturing such an element. The bonded element is such that regularly oriented superconductive oxide materials are bonded through the same kind of superconductive phase having the same crystalline orientation as, but a...
A device for imparting strain to a steel sheet by which deformed regions spaced at a desired distance and having a minute linear shape are continuously formed, comprising: a strain imparting roll (3) having projected portions (2) on the surface thereof; a press roll (4) provided opposite to the strain imparting roll (3...
Analogue de taxol répondant à la formule développée et estimée (I). Il compte parmi les isomères de constitution du taxol et inhibe de manière intense la croissance des cellules cancéreuses chez la souris et chez l'homme. Son procédé de production comporte la culture tissulaire d'albumens d'une pl...
A heat-resistant ferritic stainless steel for use as a high-temperature member such as the material of an automotive exhaust system, which is reduced in the total content of C and N and contains Ti or Zr added to thereby reduce the total content of free C and free N and which secures the amount of solid solution of W, ...
A fiber-reinforced plastic rod is formed out of a core material and a surface material, the core material consisting of high-strength continuous fiber and a parent resin, the surface material consisting of polypropylene fiber. This fiber-reinforced plastic rod is not deteriorated even when mortar and concrete are autoc...
Method in which a crack-free region where high temperature cracking does not occur is obtained by controlling the carbon content of the weld metal....
The title lubricant composition comprises a base oil or base grease and a specified amount of a heat insulating agent comprising (A) an inorganic compound undergoing endothermic melting at temperatures of 1200°C or below and (B) an inorganic powder which neither melts nor decomposes at temperatures of 1200°C or below...
This invention is directed to improve magnetic properties and to stabilize the magnetic properties of a grain oriented electrical steel sheet used as a core of electric appliances. When producing a grain oriented electrical steel sheet by heating a slab containing C, Si, acid-soluble Aℓ, N, not more than 0.014% of S+...
A method for sintering iron scraps used in a process for producing sintered ore serving as a raw material in iron making in a blast furnace or the like. Eliminating Zn in iron scraps during a sintering process makes it possible to use a large amount of light-weight iron scraps in a blast furnace and also to improve the...
A mathematical model and a means for rapidly analyzing non-metallic inclusion in steel by means of, e.g., a cold crucible method are combined to simulatingly calculate the behavior of the non-metallic inclusion and thereby to predict the quality of a cast article on-line. Further, continuous casting process variables a...
Composé lubrifiant comprenant une huile de base ou une graisse de base et une quantité déterminée d'un agent thermo-isolant comprenant (A) un composé inorganique subissant une fusion endothermique à des températures égales ou inférieures à 1200°C et (B) une poudre inorganique qui ne fond pas ni ne se dé...
A stretch-reinforced polymer sheet obtained by stretching and orienting the molecular chains of a polymer material at a predetermined ratio in a direction at right angles, or substantially at right angles, witch each other, having a birefrigence factor of zero or near zero and low in-plane anisotropy and suitable for a...