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US20110186182 |
STEEL FOR NITROCARBURIZING AND NITROCARBURIZED PARTS
The present invention relates to a steel material giving more effective case hardening for improving the fatigue strength and is characterized by containing, by mass %, C: 0.01 to 0.3%, Si: less...
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US20110315275 |
METHOD OF TREATING PARTS FOR KITCHEN UTENSILS
A method for processing parts for kitchen tools in order to protect the parts from scratches, includes sequentially: a nitridation step, optionally including a nitrocarburizing step, between 592...
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US20120298262 |
HIGH STRENGTH STEEL AND HIGH STRENGTH BOLT EXCELLENT IN DELAYED FRACTURE RESISTANCE AND METHODS OF PRODUCTION OF SAME
A steel which is excellent in delayed fracture resistance containing, by mass %, C: 0.10 to 0.55%, Si: 0.01 to 3%, and Mn: 0.1 to 2%, further containing one or more of Cr: 0.05 to 1.5%, V: 0.05 to...
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US20130087250 |
STEEL FOR NITRIDING AND NITRIDED PART
The present invention provides a steel for nitriding with a composition including, by mass %: C: 0.10% to 0.20%; Si: 0.01% to 0.7%; Mn: 0.2% to 2.0%; Cr: 0.2% to 2.5%; Al: 0.01% to less than 0.19%;...
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US20120080122 |
Steel for nitriding use and nitrided part
The present invention lowers the strength before nitriding to improve the machinability, while deepens the effective hardened case of the nitrided case for improving the fatigue strength. It...
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US20050241733 |
Superfine grain steel having nitrided layer
An ultra fine grain steel has a ferrite grain structure having an average grain size of 3 μm or less and has a nitride layer formed on a surface of the steel. The nitride layer is formed without ...
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US20120048427 |
STEEL FOR NITROCARBURIZING, NITROCARBURIZED STEEL PART, AND PRODUCING METHOD OF NITROCARBURIZED STEEL PART
Steel for nitrocarburizing includes, by mass %, C: 0% to less than 0.15%; Si: 0.01% to 1.00%; Mn: 0.01% to 1.00%; S: 0.0001% to 0.050%; Al: 0.0001% to 0.050%; Ti: more than 0.50% to 1.50%; N:...
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US20110041959 |
STEEL FOR MACHINE STRUCTURE USE FOR SURFACE HARDENING AND STEEL PART FOR MACHINE STRUCTURE USE
Steel for machine structure use for surface hardening containing, by mass %, C: 0.3 to 0.6%, Si: 0.02 to 2.0%, Mn: 1.5% to 3.0%, W: 0.0025 to 0.5%, Al: 0.001 to 0.5%, N: 0.003 to 0.02%, S: 0.0001...
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US20110000583 |
Rolling part and manufacturing method thereof
A rolling part formed by performing spheroidizing annealing, processing, carbonitriding and finishing on a steel material containing C in an amount of 0.90 mass % to 1.10 mass %, Si in an amount of...
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US20110284133 |
CARBONITRIDED PART AND PROCESS FOR PRODUCING CARBONITRIDED PART
A carbonitrided part, where a base steel contains, in mass percent, C: 0.10 to 0.35%, Si: 0.15 to 1.0%, Mn: 0.30 to 1.0%, Cr: 0.40 to 2.0%, S≦0.05%, and according to need further Mo≦0.50%, with the...
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US20120031249 |
Method for refining texture of ferrous material, and ferrous material and blade having microscopic texture
A method for refining the texture of a ferrous material. The method includes a first step and a second step. The first step includes a step of making carbide particles in a portion of a base...
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US20120247618 |
HIGH STRENGTH STEEL MATERIAL AND HIGH STRENGTH BOLT EXCELLENT IN DELAYED FRACTURE RESISTANCE AND METHODS OF PRODUCTION OF SAME
A high strength steel material which is excellent in delayed fracture resistance containing, by mass %, C: 0.10 to 0.55%, Si: 0.01 to 3%, and Mn: 0.1 to 2%, further containing one or both of V:...
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US20080000550 |
Salt Bath Ferritic Nitrocarburizing of Brake Rotors
Ferritic nitrocarburized surface treatment of cast iron brake rotors providing oxidation resistance, good braking performance and absence of distortion. Machined brake rotors are pre-heated, then...
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US20100273538 |
NITRIDING STAINLESS STEEL FOR CONSUMER ELECTRONIC PRODUCTS
A cost effective system, method and apparatus adapted to provide a nitride layer on stainless steel used for the manufacture of consumer electronic products. In addition to providing a durable,...
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US20090056835 |
Pair of guiding elements of which one is made of specific steel leading to improved anti-seizing performances
A pair of guiding elements is characterized in that at least one of its elements is made of a steel containing at least 0.15 to 0.3% by weight of carbon, 2 to 5% (preferably 2 to 3%) by weight of...
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US20050236070 |
Plasma-nitriding of maraging steel, shaver cap for an electric shaver, cutting device made out of such steel and an electric shaver
The invention relates to a method for the plasma-nitriding of precipitation-hardenable stainless steels or stainless maraging steels. The invention also relates to a shaver cap for an electric...
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US20090293998 |
Oil-Tempered Wire and Method of Producing the Same
An oil-tempered wire that has high fatigue strength and toughness after the nitriding treatment, and a method of producing the same, and a spring using the oil-tempered wire are provided. The...
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US20120031529 |
MARAGING STEEL STRIP
Provided is a maraging steel strip which has such a composition that can reduce the content of TiN acting as the starting point of fatigue fracture in a high-cycle region, and the bending fatigue...
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US20120305139 |
PROCESS FOR COATING STEEL STRIPS AND COATED STEEL STRIP
In a method for coating steel strips having a base material composition (in weight-%) of: C 0.04-1.0; Mn 9.0-30.0; Al 0.05-15.0; Si 0.05-6.0; Cr≦6.5; Cu≦4; Ti+Zr≦0.7; Nb+V≦0.5, remainder iron in...
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US20060102253 |
Surface modified stainless steel
A stainless steel, which after nitriding exhibits a hardened surface layer with a hardness of at least 1200 Hv is disclosed. The stainless steel can be in the form of wire, plate, strip, tube and...
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US20070034301 |
Rolling-contact shaft with joint claw
A steel-made rolling-contact shaft with a joint claw improved in both the rolling contact fatigue life at the raceway and the static fracture strength (torsional strength) at the claw includes a...
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US20120186703 |
NITRIDING OF NIOBIUM STEEL AND PRODUCT MADE THEREBY
A nitrided steel product or thin cast steel strip comprising, by weight, less than 0.25% carbon, between 0.20 and 2.0% manganese, between 0.05 and 0.50% silicon, less than 0.01% aluminum, niobium...
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US20080000553 |
Soft-nitrided parts made of non-heat treated steel
Soft-nitrided parts wherein a ferrite grain in the diffusion layer does not have a γ′ nitride of more than 20 μm in the longitudinal axis, which is made of a non-heat treated steel that has a che...
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US20110277886 |
NITRIDING OF NIOBIUM STEEL AND PRODUCT MADE THEREBY
A nitrided steel product or thin cast steel strip comprising, by weight, less than 0.25% carbon, between 0.20 and 2.0% manganese, between 0.05 and 0.50% silicon, less than 0.01% aluminum, niobium...
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US20120222777 |
PROCESS TO MANUFACTURE GRAIN-ORIENTED ELECTRICAL STEEL STRIP AND GRAIN-ORIENTED ELECTRICAL STEEL PRODUCED THEREBY
A process to manufacture grain-oriented electrical steel (GOES) strip and a product produced by the process are provided. A molten silicon-alloyed steel is continuously cast in a strand having a...
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US20120318407 |
SPRING STEEL AND SURFACE TREATMENT METHOD FOR STEEL MATERIAL
A surface treatment method for a steel material includes carbonitriding, quenching, and tempering. The steel material consists of, by weight %, 0.27 to 0.48% of C, 0.01 to 2.2% of Si, 0.30 to 1.0%...
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US20090065098 |
HIGH-STRENGTH STEEL EXCELLENT IN WELDABILITY AND PROCESS FOR PRODUCTION THEREOF
The present invention provides a high-strength steel material capable of suppressing formation of blowholes during welding even if the strength thereof is improved by nitriding, and a method of...
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US20060225814 |
Crankshaft and method for manufacturing same
A surface of a steel, as a material for a crankshaft, is nitrocarburized. The steel contains, as alloy elements C having a content 0.10 mass % or more 0.30 mass % or less, Si having a content 0.5...
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US20120168035 |
STEEL FOR MACHINE STRUCTURAL USE, MANUFACTURING METHOD FOR SAME, CASE HARDENED STEEL COMPONENT, AND MANUFACTURING METHOD FOR SAME
Disclosed is a steel for machine structural use including 0.05-0.8% of C, 0.03-2% of Si, 0.2-1.8% of Mn, 0.1-0.5% of Al, 0.0005-0.008% of B, and 0.002-0.015% of N, and including 0.03% of P or less...
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US20070144619 |
Nitrocarburized microalloyed steel member
A nitrocarburized microalloyed steel member consists of a microalloyed steel that includes a nitrocarburized layer on a surface, a cross-sectional structure of which steel except for the...
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US20110079326 |
METHOD TO INCREASE CORROSION RESISTANCE IN FERRITIC NITROCARBURIZED TREATED CAST IRON SUBSTRATES
A method for improving corrosion resistance in FNC cast iron substrates without the need for additional coating or painting. The exemplary methods remove a portion of the FNC coating applied to a...
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US20080035246 |
Thrust bearing component
A thrust bearing component is formed of cold-reduced steel sheets and strip having surface roughness of Rmax≦2 μm and provided by cold rolling a high-carbon steel containing 0.9 wt % to 1.2 wt % of...
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US20080023113 |
High strength gear, power transmission mechanism using same, and production method for high strength gear
A high strength gear used as an element of a power transmission mechanism. The gear includes a base gear formed of an iron-based alloy subjected to carburizing or carbonitriding treatment. The base...
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US20110209798 |
GRAIN-ORIENTED ELECTRICAL STEEL SHEET AND MANUFACTURING METHOD THEREOF
Nitriding process of a steel strip is performed. Next, annealing is performed to form a forsterite based glass coating film at a surface of the steel strip. Heating is performed up to 1000° C. or ...
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US20090218011 |
METHOD FOR MANUFACTURING A STAINLESS STEEL PRODUCT
The invention relates to a method for making a thin finished product to be formed by deformation that combines strength with resistance to a highly corrosive environment. The method comprises...
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US20100108199 |
Ferrous abrasion resistant sliding material
A ferrous abrasion resistant sliding material capable of improving seizing resistance, abrasion resistance and heat crack resistance is provided. The ferrous abrasion resistant sliding material has...
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US20050045248 |
Contact pressure-resistant member and method of making the same
A contact pressure-resistant member including a rolling contact portion having a carbon concentration ranging from 0.8 to 1.2%. The contact pressure-resistant member is made of a steel material...
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US20120325373 |
METHOD FOR TREATMENT OF METAL SURFACE, AND SURFACE-MODIFIED METAL PRODUCT
Provided is a method of treating a metal surface, which can improve surface properties of a target metal, such as surface hardness and wear resistance in a simple manner and at low cost using very...
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US20090276992 |
METHOD FOR MANUFACTURING RACEWAY MEMBER, METHOD FOR MANUFACTURING VALVE TRAIN AND RACEWAY MEMBER
A method for manufacturing a raceway member, in which a hardness of a region to be plastically deformed is controllable in a stable manner and a sufficient rolling contact fatigue life is ensured...
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US20100037991 |
DIFFUSION PROMOTERS FOR LOW TEMPERATURE CASE HARDENING
Low temperature carburization of a workpiece surface is accomplished faster by impregnating the surface with a diffusion promoter prior to or during the low temperature carburization process.
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US20110017351 |
NITROCARBURIZED RAW MATERIAL FOR CRANKSHAFTS AND METHOD FOR MANUFACTURING THE SAME
It is devised to further enhance strength and straightening ability of a nitrocarburized raw material for crankshafts. A nitrocarburized raw material for crankshafts is formed so as to have a...
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US20070193659 |
Method for nitriding metal in salt bath and metal manufactured using the same
Provided is a method for nitriding a metal in a salt bath by using a non-cyanide salt and a nitrided metal manufactured using the same. The method includes the steps of: immerging at least one salt...
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US20050205168 |
Crankshaft
A crankshaft is made of steel wherein straightening can be carried out with ease even though normalizing after hot forging is eliminated, and wherein cutting work can be carried out with ease even...
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US20090165896 |
Carbonitriding Method, Machinery Component Fabrication Method, and Machinery Component
A carbonitriding method that allows the permeating rate of nitrogen to be increased to improve the efficiency of the carbonitriding process is directed to carbonitriding a workpiece formed of steel...
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US20120018050 |
STEEL FOR SURFACE LAYER HARDENING TREATMENT, SURFACE LAYER-HARDENED STEEL PART, AND METHOD OF MANUFACTURING THE SAME
In the steel for a surface layer hardening which is treated with carburizing in a temperature range of 800° C. to 900° C., chemical composition thereof contains, by mass %, C: 0.10% to 0.60%, Si: 0...
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US20060070685 |
Thin-walled bearing component, produced without material-removing machining
A thin-walled stainless bearing component, in particular a rolling bearing component, such as bearing ring, sleeve or bush, produced without material-removing machining by being deep-drawn from a...
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US20090176142 |
CORROSION RESISTANT METAL COMPOSITE FOR ELECTROCHEMICAL DEVICES AND METHODS OF PRODUCING THE SAME
A metal composite for use in electrochemical devices is disclosed. The metal composite comprises a stainless steel interior component and a deposited nitrided metal exterior layer, wherein the...
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US20120051682 |
BEARING PART, HEAT TREATMENT METHOD THEREOF, AND ROLLING BEARING
A bearing part having long life against rolling contact fatigue, excellent in anti-crack strength and restricted in an increase of aged dimensional change, a heat treatment method thereof, and a...
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US20110186186 |
IRON AND STEEL MATERIAL HAVING QUENCHED SURFACE LAYER PART, METHOD FOR PRODUCING THE IRON AND STEEL MATERIAL, AND QUENCHED COMPONENT
Providing an iron and steel material having quenched surface part, avoiding oxidation of a compound layer formed on the surface of the iron and steel material due to quenching, its production...
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US20100154937 |
CARBONITRIDING METHOD, MACHINERY COMPONENT FABRICATION METHOD, AND MACHINERY COMPONENT
A carbonitriding method that can improve the nitrogen permeating rate to render the carbonitriding process effective includes an atmosphere control step (50), and a heating pattern control step...
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