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JP3915043 |
To provide a method of manufacturing a steel for the manufacture of forging, for manufacturing forgings having excellent properties, and the forging. This steel for the manufacture of forging has a composition consisting of, by weight, 0...
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JP2007039790 |
To propose a method capable of achieving the surface toughening of a metallic member without necessity for any large-scale or complicated equipment.A carbon-based film with a thickness of at least 0.2 μm is formed on the surface of a me...
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JP2007031770 |
To provide a steel-made spring member having a nitrogen diffusion layer of a substantially uniform thickness which is capable of suppressing deposition of a compound layer as much as possible.An oxide film present on a surface of a steel...
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JP2007030156 |
To provide a method and a device controlling burnishing processes for simulating all processes applied to components during manufacturing without frequently, expensively, or destructively evaluating processed components.This method inclu...
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JP3909902 |
To provide steel parts for high bearing resistance, suitable for steel parts requiring high strength, making compact, etc., such as gears, cums, and bearing parts, attended by rolling and sliding and requiring rolling strength and wear r...
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JP2006348342 |
To provide a rolling bearing having a long fatigue life at low cost.Inner and outer rings 1, 2 are produced by subjecting a steel having a composition comprising 0.2 to 1.2% C, 0.15 to 2.0% Si, 0.2 to 2.0% Mn, 0.5 to 2.0% Cr, ≤2.0% Mo,...
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JP3893889 |
To provide non-heatteated steel for hot forging which is satisfactorily fractured when fractured at a notch as a starting point by working using a heat source in a technique for producing parts by separating the connecting rod of an auto...
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JP3892640 |
To provide a shear deformation working method and a device therefor by which shear deformation for forming a shear deformed structure or a sheared texture can continuously be applied to a metallic thin sheet. In this working method for t...
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JP2006334659 |
To provide a spheroidal graphite cast iron member with which the generation of cracks in a caulking part is prevented and to provide a joining method of the spheroidal graphite cast iron member with which the joining force of caulking is...
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JP3888865 |
To provide a forging method for changing the metal structure into the fine ferrite and pearlite structure without employing a conventional quench- and-temper method, obtaining the strength in which the yield point (YP value) exceeds that...
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JP2006328466 |
To provide a component made of steel having a spline excellent in fatigue resistance, and in which sufficient compressive residual stress can be applied to the edge part of the spline, and to provide a method for improving the fatigue st...
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JP2006322446 |
To provide a common rail improving internal pressure fatigue strength as much as possible by strengthening, in particular, compressive stress resistance in a circumferential direction of a branch hole in the vicinity of both ends of the ...
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JP3881921 |
To provide a method improving fatigue resistance of hollow cylindrical parts made of steel such as rollers for roller chains having hardness of HRC ≥45. The fatigue resistance of the hollow cylindrical parts made of steel is improved b...
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JP3879822 |
To provide a shot peening method allowing a more strong shot peening and capable of producing a reproducible prestress on all cavities in a shorter time. A specified amount of balls 10 are installed on the vibrating surface 8a of a sonot...
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JP3880039 |
To provide a shot peening method capable of realizing the stronger shot peening and capable of generating the pre-stress possible to be regenerated over the whole of a cavity in a short time. Shot peening to a partition wall 2C of the ca...
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JP3879059 |
To provide a method for manufacturing a metallic material of nanocrystalline structure by which performance can be improved, e.g. strength can be improved by providing nanocrystalline structure to a formed body or structure of metallic m...
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JP2006312773 |
To provide a high tensile strength welded steel tube which has a high tensile strength of ≥ 700 MPa and is excellent in formability and low-temperature toughness and superior in torsional fatigue resistance after cross section forming ...
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JP2006297569 |
To provide a residual stress improving method of efficiently generating cavitations in a material surface when a WJP (water-jet peening) is applied to the material surface, and a device for use in the method, and to provide a residual st...
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JP2006299324 |
To enhance the abrasion resistance and peel resistance of a steel member to be used in a heavy load environment.This surface treatment method comprises: nitriding the steel member to form a chemical compound layer of N and Fe on its oute...
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JP2006283085 |
To provide a method for producing a spring material excellent in both of working precision and high fatigue strength.The material for spring composed, by mass%, of ≤0.01% C, 8.0-11.0% Ni, ≤14.0% Co, 2.0-9.0% Mo, ≤2.0% (excluding 0)...
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JP2006283043 |
To provide a method for reforming the surface of a metallic material having no solid-phase transformation, which gives fine crystal grain, and the surface-reformed metallic material having no solid-phase transformation.The surface-reform...
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JP2006274446 |
To provide a method of producing a steel strip having one or more regions of an ultrafine microstructure.The method comprises: a step of casting the steel strip of an austenite phase having a grain size greater than 50 microns; a step of...
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JP2006278087 |
To provide a contact member having good electric contact and high corrosion resistant property.The surface of the contact member is made amorphous and flattened by applying continuous high speed jet collision (shot) of ball-shaped alumin...
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JP2006265662 |
To provide a method for producing a belt for continuously variable transmission, having reasonable strength and fatigue characteristics with a producing process of a reduced processing load.In the method for producing the belt for contin...
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JP3859331 |
To provide steel wire and spring, obtained by means of wire drawing without quench-and-temper treatment and excellent in heat resistance and fatigue strength, and their production. This steel wire is constituted of a steel wire containin...
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JP3859068 |
To improve the wear resistance and the seizure resistance of a sliding surface of an appliance such as an outer surface of a sliding surface of a piston pin of an internal combustion engine for a vehicle. A seizure resistance improving m...
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JP3859504 |
To provide a strengthening treatment method for the structure of the metallic material to be worked. The strengthening treatment method for the structure of the metallic material to be worked is attained from the three stages of (a) a st...
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JP2006257527 |
To provide a method for producing a grain-oriented magnetic steel sheet by which a low core loss grain-oriented magnetic steel sheet suitable for a stacked-core transformer or for a ribbon-core transformer can be produced with little var...
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JP2006255865 |
To provide a surface modification method which is implemented by controlling cavitations and intensifying the strength of a crushing impact force, to thereby efficiently modify the surface of a material.According to the surface modificat...
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JP3855418 |
To produce soft-nitrided parts having excellent fatigue resistance and wear resistance and to provide a method for producing a steel for soft- nitriding excellent in machinability to form into the stock thereof. The method for producing ...
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JP3857213 |
To reduce the manufacturing cost of castings by elongating the life of a metal mold for casting. A surface of a cavity in a fixed mold 12, that is a casting mold, made of SCM420 material is treated by a first shot peening treatment, a ni...
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JP2006249559 |
To provide a surface supporting plate made from stainless steel, which does not need shape correction and has necessary rigidity, flatness, abrasion resistance and scratch resistance as well as excellent corrosion resistance.The stainles...
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JP2006250316 |
To prevent smearing, seizure, wear and tear, peeling or the like and achieve long life in boundary lubrication surroundings that oil film parameter Λ is smaller than or equal to 3.A coating of a solid lubricant of which the size rate is...
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JP2006233284 |
To provide a producing method with which Fe-Ni alloy having good magnetic characteristic while securing the hot-workability is developed by solving such problem as to develop the large crack in the side edge part of a sheet at hot-rollin...
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JP3846246 |
To provide a method for manufacturing a steel tube which solves the problem of a high yield ratio peculiar to a high-strength steel tube and secures the circularity of the tube. The steel tube manufactured by forming and welding a steel ...
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JP2006224135 |
To provide a plastic processing device and a plastic processing method by which a high strain can effectively be introduced by a simple method capable of being industrialied.The plastic processing device capable of introducing strain for...
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JP3844679 |
To provide a shot peening method used for a head of a blade having cooling air passage orifices and capable of generating prestress similarly repeatable for all the blades in a relatively short shot peening time. This shot peening is car...
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JP3844267 |
To obtain a highly strong steel filament suitable for reinforcing rubber articles and excellent in ductility by controlling the strain of the surface layer of the steel filament on the bases of specific repeated twisting test values and ...
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JP2006218541 |
To provide an article having long fatigue lifetime by selectively increasing the residual compressive stress in the maximum principal stress in the surface of a work in the laser peening method of a metal component or the like with the c...
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JP3843059 |
To provide a method for manufacturing a UOE steel tube of excellent seam welding strength characteristic and internal pressure fatigue characteristic for stabilizing the strength of a seam-welded portion and a HAZ of the high strength UO...
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JP3840172 |
To provide a method of manufacturing a UOE steel pipe of excellent HAZ toughness and improved strength-toughness balance. In a UOE steel pipe manufacturing method, a steel plate is successively subjected to C-forming, U-forming and O-for...
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JP3832876 |
PURPOSE: To produce carbide-dispersed type carburized parts improved in bending fatigue strength even if carbides are present and furthermore excellent in pitting resistance by allowing the average value of the volume ratio of carbides i...
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JP2006189131 |
To provide a linear motion device capable of eliminating expensive devices and processing such as spattering and CVD and capable of obtaining sufficient lubrication, fatigue-resistant strength and impact-resistance at low costs, while pr...
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JP3823737 |
To prevent solid particles from remaining on the surface of a steel sheet, to provide a normal steel sheet, and to provide equipment to efficiently recover solid particles, and improve its yield. A surface roughness imparting device 5 is...
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JP3823736 |
To provide a device to inject fine solid particles against the surface of a steel sheet and to prevent solid particles from remaining on the surface of the steel sheet. A surface roughness imparting device 5 consists of a blast chamber s...
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JP2006169621 |
To provide a stainless steel wire for spring in which, by controlling yield ratio by improving the mechanical properties of the stainless steel wire for spring, spring formability is improved and fraction defective is markedly decreased ...
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JP2006169581 |
To improve the strength, hardness, fatigue resistance, abrasion resistance and corrosion resistance of a worked metal material, by efficiently forming a hardened layer having a nanocrystal structure.The worked metal material has the hard...
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JP3820208 |
To more improve the reliability of a welded structure obtained by using metallic sheets by providing a method for improving the fatigue strength of a lap welded joint obtained by lapping two sheets of metallic sheets and welding the cent...
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JP2006161702 |
To solve a problem that finish grinding or lapping process after nitriding treatment is required since dimension accuracy can not be kept due to expansion of nitriding treatment after final finishing work in a vane treated by conventiona...
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JP2006152330 |
To provide a machine structural member, compared with a carburized member which has been used heretofore, having no remarkable increase of a component cost, having excellent producibility, and having excellent twisting fatigue strength, ...
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