30results about How to "High in strength" patented technology

The present invention has as its object to stably produce a high strength electrical steel sheet and a processed part of the same which is high in strength and has wear resistant and is superior in magnetic flux density and core loss without greatly changing the cold rollability and production processes from those of conventional electrical steel sheet and provides a high strength electrical steel sheet characterized by containing, by mass %, C: 0.06% or less, Si: 0.2 to 6.5%, Mn: 0.05 to 3.0%, P: 0.30% or less, S or Se: 0.040% or less, Al: 2.50% or less, Cu: 0.6 to 8.0%, N: 0.0400% or less, and a balance of Fe and unavoidable impurities and containing in the steel a metal phase composed of Cu of a size of 0.1 μm or less. The method of production of the same comprises holding in a temperature range of 300° C. to 720° C. for 5 seconds or more for heat treatment.

An organic-inorganic hybrid film is deposited on a substrate by introducing, into a vacuum chamber, a gas mixture of a silicon alkoxide and an organic compound and generating a plasma derived from the gas mixture. Then, a hydrogen plasma process is performed with respect to the organic-inorganic hybrid film by introducing, into the vacuum chamber, a gas containing a reducing gas and generating a plasma derived from the gas. As a result, an organic component in the organic-inorganic hybrid film eliminates therefrom and numerous fine holes are formed in hollow portions from which the organic component has eliminated, whereby a porous film composed of the organic-inorganic hybrid film is obtained.

A high-strength, high-permeability steel sheet for picture tube band comprises, in mass percent, C: 0.003-0.010%, Si: 0.5-1.0%, Mn: 1.0-2.0%, P: 0.04-0.15%, S: not more than 0.02%, Al: not more than 0.030%, N: not more than 0.004% and the balance of Fe and unavoidable impurities, has a chemical composition satisfying C×Mn×P≧2.5×10⁻⁴, and has a ferrite crystal grain diameter of 10-100 μm and a yield stress of 300 N/mm² or higher, and preferably has a specific permeability μ0.35 in a DC magnetic field of 0.35 Oe of 400 or higher. The steel sheet can be produced by regulating the hot-rolling coiling temperature to 600-700° C. and selecting an appropriate combination of the cold rolling reduction ratio and a final annealing temperature in the range of 750-900° C.

A liquid crystalline polyester fiber which exhibits a half width of endothermic peak (Tm1) of 15° C. or above as observed in differential calorimetry under heating from 50° C. at a temperature elevation rate of 20° C./min and a strength of 12.0 cN/dtex or more; and a process for production of the same. A liquid crystalline polyester fiber which is excellent in abrasion resistance and lengthwise uniformity and is improved in weavability and quality of fabric and which is characterized by a small single-fiber fineness can be efficiently produced without impairing the characteristics inherent in fabric made of liquid crystalline polyester fiber produced by solid phase polymerization, namely, high strength, high elastic modulus and excellent thermal resistance.

Provided is a heat-curable epoxy resin composition for encapsulating an optical semiconductor element. The resin composition exhibits a high strength and elastic modulus even in a high-temperature environment, hardly turns yellow due to an uneven hardening that occurs immediately after molding, and is solid under a room temperature such that the resin composition can be handled easily. The resin composition includes: a prepolymer obtained through a reaction of (A) a triazine derivative epoxy resin, (B) at least one epoxy resin selected from a group of (B-1) a bisphenol A-type epoxy resin, (B-2) a bisphenol F-type epoxy resin, (B-3) a hydrogenated bisphenol A-type epoxy resin and (B-4) an alicyclic epoxy resin and (C) an acid anhydride curing agent, at an epoxy group equivalent/acid anhydride group equivalent ratio of 0.6 to 2.0; and (D) a curing accelerator, such resin composition capable of being pressure molded under a room temperature before thermally cured.

A first nitriding process step is performed in which a steel member is subjected to a nitriding process in a nitriding gas atmosphere having a nitriding potential with which a nitride compound layer having a γ′ phase or an e phase is generated, and thereafter a second nitriding process step is performed in which the steel member is subjected to a nitriding process in a nitriding gas atmosphere having a nitriding potential lower than the nitriding potential in the first nitriding process step, to thereby precipitate the γ′ phase in the nitride compound layer. It is possible to generate the nitride compound layer having a desired phase mode uniformly all over a component to be treated and to manufacture a nitrided steel member high in pitting resistance and bending fatigue strength.

The composite sintered body of the invention is a composite sintered body, containing 20 volume % or more and 80 volume % or less of cubic boron nitride particles, and a binder; wherein the binder contains at least one selected from the group consisting of nitrides, carbides, borides, and oxides of elements in the group 4a, elements in the group 5a, and elements in the group 6a in the periodic table, and solid solutions thereof, at least one selected from the group consisting of simple substances of Zr, Si, Hf, Ge, W and Co, compounds thereof, and solid solutions thereof, and a compound of Al; and when the composite sintered body contains therein W and/or Co, the total weight of the W and/or Co is less than 2.0 weight % and further the composite sintered body contains therein one or more of the Zr, Si, Hf and Ge (hereinafter referred to as “X”), and when the composite sintered body contains the X, the amount of each of the X is 0.005 weight % or more and less than 2.0 weight %, X/(X+W+Co) is 0.01 or more and 1.0 or less and further the weight of Al is 2.0 weight % or more and 20.0 weight % or less.

In a large-sized radiator core support manufactured by filling a mold cavity 2 with a resin material through injection, polypropylene (PP) containing carbon fiber in a range of 15 to 30 wt % is used as the resin material, and an average fiber length of the carbon fiber remaining after molding is set to 1.5 mm or more. Moreover, a spiral flow length L/D of the carbon fiber is set to 200 mm or more.

A foam material generator has a housing; transmission device on the housing; housing cavity within the housing; pressurizing stirring foaming wheel within the cavity; transmission device transmission shaft connected to the wheel; pressurizing stirrers on the wheel; pressurizing stirrer airflow-facing surface forms an inclined angle with a cross sectional surface in a wheel rotational axis direction; housing cavity inlet is on a cavity end, and a housing cavity outlet is on another end; encircling abrasive disc is on a cavity inner wall adjacent to the outlet; encircling abrasive disc inlet is at a encircling disc middle portion; vortex current abrasive foaming disc is on a wheel end adjacent to the encircling disc; vortex current abrasive foaming disc surface conforms to be in close proximity with an encircling disc surface; and vortex current abrasive foaming cavity is between the surfaces of the vortex current abrasive foam disc and encircling disc.

The present invention has its object to provide a resin composition excellent in mechanical strength and elasticity and further showing only a slight extent of gravity deformation under high temperature conditions. The invention relates to a resin composition which comprises an isobutylene-based polymer (A), an aromatic vinyl-based thermoplastic elastomer (B) comprising a polymer block (b1) the constituent monomer(s) of which is(are) an aromatic vinyl compound(s) and a polymer block (b2) the constituent monomer(s) of which is(are) an aliphatic hydrocarbon compound(s) other than isobutylene, and a filler (C). This composition can be suitably used as, for example, a sealant, in particular as a hot melt sealant for double glazing units, and as a hot melt spacer material for double glazing units.

The invention discloses a graphene composite film modified by single crystal sapphire whiskers as well as a preparation method and application thereof. The graphene composite film provided by the invention comprises graphene and single crystal sapphire whiskers, the single crystal sapphire whiskers and the graphene are dispersed in the graphene composite film, and the content by weight of the graphene is greater than that of the single crystal sapphire whiskers. The graphene composite film can be used to prepare an electrode and applied to lithium ion batteries and capacitors. The graphene composite film has excellent toughness, structural stability and folding resistance as well as excellent electroconductivity and thermoconductivity; and the preparation method thereof is good in reproducibility and low in cost. The electrode has stable structure, low internal resistance, and excellent electroconductivity, thermoconductivity, cycle performance and rate performance during usage as well as charging and discharging.