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JP2008156673A |
To provide a machine component such as a gear to be used after having been carburized, which has both an advantage of having been surface-hardened by carburization and an advantage of having been surface-strengthened by a shot-peening te...
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JP4116767B2 |
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JP4112952B2 |
A method of production of a metallic product with a nanocrystallized surface layer comprising subjecting a surface layer of a metallic product to ultrasonic impact treatment by one or more ultrasonic indenters vibrating in a plurality of...
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JP4107692B2 |
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JP2008138262A |
To provide a method for forming a shot-peening working surface with which the shot-peening worked surface can be formed on the surface of roll device component without bringing about increases in the cost of a base stock cost and in a wo...
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JP2008519933A |
A compressor wheel (7) is disclosed comprising an array of blades (20) extending from central hub (21) adapted from attachment to a rotatable shaft (8) and a backface (25). A region of the surface of the compressor wheel backface (25) is...
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JP2008133519A |
To form a reforming layer to a desired depth from the surface of a steel material and to simply perform this formation at a low cost.A rotating tool T rotating at high speed is brought into contact with the surface of the steel material ...
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JP4094199B2 |
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JP2008106365A |
To provide a spring having a high durability in actual use and sagging resistance of the same level as or higher than conventional ones through improvement of the corrosion fatigue resistance.The spring uses as a material a steel includi...
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JP4079202B2 |
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JP2008082377A |
To elongate durability of a rolling device by suppressing increase of surface roughness and applying compression residual stress to a rolling element raceway surface applied with surface finishing.The rolling device 1 is provided with an...
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JP2008510067A |
A radial expansion system.
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JP2008510069A |
A radial expansion system.
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JP2008069938A |
To provide a gear wherein the lubricating performance of the tooth face is improved to prevent peel-off or seizure damage to the tooth face, and to provide a gearing assembly.The gear has the tooth face 1 in which micro oil pools 5 are p...
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JP2008069428A |
To improve the durability and wear resistance of a die molding face formed with a surface layer obtained by using a carbon-solid-soluted iron material in which carbon is solid-soluted in a supersaturated state.The surface layer is formed...
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JP4063865B2 |
A method of making high-strength steel structural members is disclosed by providing a blank of high-strength steel having a ferrite-pearlite microstructure and high-strength mechanical properties and cold forming the blank by rolling, up...
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JP2008055310A |
To provide a supporting body for a hydrogen-permeable membrane for use in a fuel cell etc. and to provide a method for manufacturing a hydrogen-permeable membrane member.In the method for manufacturing a supporting body for a hydrogen-pe...
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JP2008051181A |
To provide a clutch release bearing device for achieving abnormal noise prevention and life improvement.The clutch release bearing device 3 comprises a clutch release bearing 10 including an inner ring 11 and an outer ring 12, a guide sl...
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JP2008051182A |
To provide a clutch release bearing device for achieving abnormal noise prevention and life improvement.The clutch release bearing device 3 comprises a clutch release bearing 10 including an inner ring 11 and an outer ring 12, and balls ...
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JP2008038222A |
To provide a method and an apparatus for stably improving a fatigue strength in a metallic material by which efficiency of higher fatigue strength than that of the conventional treating method can be obtained.An ultrasonic impact treatme...
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JP4049809B2 |
High strength steel structural members and method of making are disclosed by providing a blank of high-strength steel material having a tensile strength of at least about 120,000 psi and a yield strength of at least about 90,000 psi and ...
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JP4047499B2 |
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JP4044829B2 |
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JP4042953B2 |
In a production process for highly strengthened springs, the process comprises performing a first shot peening to a spring steel having a hardness of a diameter of 2.7 mm or less on a Brinell ball mark while applying stress to the spring...
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JP2008001992A |
To obtain a high-strength steel structural member having mechanical property as the same or higher than a blank from the high-strength steel material blank having at least 800 N/mm2 tensile strength and at least 600 N/mm2 yield strength....
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JP4031992B2 |
A high manganese duplex stainless steel with excellent hot workability, comprising (in weight %): less than 0.1% of C; 0.05-2.2% of Si; 2.1-7.8% of Mn; 20-29% of Cr; 3.0-9.5% of Ni; 0.08-0.5% of N; less than 5.0% of Mo and 1.2-8% of W, a...
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JP2007538203A |
A process is provided for manufacturing balls, especially for ball and socket joints, as well as to a ball element for two-part ball pivots. The microalloyed carbon-manganese steel balls are manufactured by cold extrusion and subsequent ...
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JP2007332464A |
To provide a method which is useful for producing a wide variety of high-strength steel structural members from high-strength steel blanks. High-strength steel structural members and a method of making them are disclosed by providing a b...
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JP2007535409A |
The present invention relates to a method for joining two or more components and/or construction parts, at least one of which consists of a dispersion-strengthened alloy having the following composition (in % by weight): C up to 0.08 Si ...
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JP4018905B2 |
Steel wire rods and bars for machine structural use having, in the as-hot-rolled state, the same cold workability as conventional steel wire rods and bars subjected to softening annealing after hot rolling, and a production method thereo...
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JP2007307678A |
To solve a problem wherein a value itself of compressive residual stress of a generated surface layer is low, and fatigue strength is not sufficient since hardness of a shot grain is low or a grain size of the shot grain is large in a co...
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JP4014686B2 |
To provide a composite magnetic member, its manufacturing method and a solenoid valve using this composite magnetic member in which the performances of a ferromagnetic part and nonmagnetic part is held and which is excellent in the resis...
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JP2007301566A |
To provide a method of a laser peening treatment, which method can improve fatigue property than before under the circumstances of repeated loads by efficiently introducing compressive residual stresses into weld toe portions of a weld s...
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JP2007301681A |
To further thin the wall of a press pulley by improving the strength and fatigue strength of the press pulley by an inexpensive means. Vicinity of surface parts of respective bent parts 5a and 5b connecting an erecting wall part 4 to an ...
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JP2007533918A |
Motors with high power densities and ignition pressures, for example diesel motors, require crankshafts with combined gear wheels, which can withstand high stresses, especially in their connection areas. As a consequence, forged steel cr...
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JP2007297651A |
To form a non-layer formed structure of nanocrystals having an average grain diameter of 100 nm in the vicinity of the surface of a material of a hard metal to be treated, by spouting fine particles with an average particle diameter of 1...
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JP2007300093A |
To provide a method and a system for making analog switching on the fly, which achieve a switching time between energy levels of less than one second, and to provide a laser head for laser shock peening. The system is a laser device conf...
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JP2007291466A |
To provide a surface treating method of a metal with which the wear resistance can be improved by forming a high quality and toughness film on metal surfaces contacted with each other while receiving the surface pressures. On the metal s...
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JP4003450B2 |
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JP4005189B2 |
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JP2007284796A |
To provide a steel and a process for the manufacture of a steel component formed by cold plastic deformation. The steel for the manufacture of a steel component formed by cold plastic deformation, the chemical composition of which compri...
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JP2007284777A |
To provide a steel material for ultrasonic shock treatment having excellent fatigue strength, and to provide an ultrasonic shock treatment method. Regarding the multi-layer steel material in which a soft layer 6 is formed on the surface ...
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JP4000648B2 |
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JP4000787B2 |
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JP3990726B2 |
A high strength steel composition comprising ferrite and martensite/banite phases, the ferrite phase having primarily vanadium and mobium carbide or carbonitride precipitates, is prepared by a first rolling above the austenite recrystall...
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JP3990725B2 |
A high strength steel composition comprising ferrite and martensite/bainite phases, the ferrite phase having primarily vanadium and niobium carbide or carbonitride precipitates, is prepared by a first rolling above the austenite recrysta...
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JP3990724B2 |
High strength steel is produced by a first rolling of a steel composition, reheated above 1100 DEG C., above the austenite recrystallization, a second rolling below the austenite recrystallization temperature, water cooling from above Ar...
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JP2007262506A |
To suppress and correct an imperfect quenched layer generated upon carburizing treatment in machine parts, and to easily improve the fatigue strength thereof. The method for producing machine parts comprises: a stage (S1) where machine p...
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JP3988095B2 |
Steel contains by weight 0.03-0.16% carbon, 0.5-2% manganese, 0.05-0.5% silicon, 0-1.8% chromium, 0-0.25% molybdenum, 0.001-0.05% aluminium, 0.001-0.05% titanium, 0-0.15% vanadium, 0.0005-0.005% boron, 0.004-0.012% nitrogen and 0.001-0.0...
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JP3990006B2 |
To provide a device and a method ideal for applying water jet peening(WJP) efficiently and uniformly to the end part of a small diameter pipe body. A center shaft 20 is provided at the tip part of a mast 17, and a disc-like nozzle 1 is r...
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