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JP5704524B2 |
To provide a metallic material which has a high hardness ultrafine crystal grain layer formed by severe plastic deformation etc., on a surface layer and further, a high hardness layer having a sufficient layer thickness and having higher...
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JP2015061942A |
To provide an apparatus for changing physical characteristics of a metal workpiece having a surface.An apparatus 200 comprises: a support 202 for a workpiece; a driven member 204 for applying multiple impacts to a surface 206 of the work...
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JP2015510040A |
The present invention relates to a technique for treating the surface of a metal component material and a technique including the steps of the system: an electric spark characterized by being a surface treated metal material for a metal ...
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JP5694562B2 |
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JP5683230B2 |
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JP5682993B2 |
A method of improving and strengthening the performance of metal and protecting the metal against degradation and suppression thereof by controlling ultrasonic impact is disclosed. The method addresses the problems of degradation of meta...
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JP5679455B2 |
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JP5675296B2 |
To provide both high hardness and crystal grain refinement, in shot peening which is a simple and inexpensive surface treatment.The apparatus includes: an induction heating coil 130 for heating a workpiece W; a high-frequency applying de...
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JP5667491B2 |
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JP5665564B2 |
To provide a method for manufacturing a bearing ring, for uniformly forming a quench-hardened layer by induction hardening over the entire periphery along a rolling surface while suppressing the manufacturing cost of a quenching apparatu...
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JP5665565B2 |
To provide a method for manufacturing a bearing ring, for uniformly forming a quench-hardened layer by induction hardening over the entire periphery along a rolling surface while suppressing the manufacturing cost of a quenching apparatu...
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JP5640792B2 |
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JP5638231B2 |
To provide a method of forming a conductive carbon membrane, having excellent conductivity and corrosion resistance, on the surface of a stainless steel sheet. A stainless steel sheet is subjected to, for example, a cold rolling treatmen...
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JP5639064B2 |
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JP5635316B2 |
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JP5633101B2 |
The present invention provides a continuous heat treatment furnace including: a heating chamber heating a treatment object in an inert gas atmosphere; a front chamber provided at one end of the heating chamber; and a first cooling chambe...
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JP5631044B2 |
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JP5624503B2 |
A spring with superior fatigue resistance and a production method therefor are provided by decreasing the material cost and simplifying the production process. There is provided with a spring comprising: a composition consisting of, by m...
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JP5618978B2 |
Steel is described having a chemical composition, in weight-%, of 0.3 to 0.5% carbon (C), from traces to a max. of 1.5% silicon (Si), 0.2 to 1.5% manganese (Mn), 0.01 to 0.2% sulfur (S), 1.5 to 4% chromium (Cr), 1.5 to 5% nickel (Ni), 0....
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JP5614887B2 |
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JP5609594B2 |
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JP2014184478A |
To provide a manufacturing method of an endless metal belt capable of improving fatigue strength, by imparting high compressive residual stress, without causing productivity reduction and a large equipment change.The manufacturing method...
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JP5599653B2 |
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JP2014176870A |
To provide a laser peening device capable of freely performing laser peening depending on various situations desired by a user.A laser peening device includes a slide mechanism 4 that slides a coating member 2, having at least a solid tr...
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JP2014173127A |
To provide a molding die capable of improving adhesion and followability of a hard film onto a die substrate, and to provide a production method thereof.A molding die 1 is formed by coating a hard film 3 on the surface 200 of a die subst...
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JP5590773B2 |
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JP5559961B2 |
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JP5559768B2 |
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JP5550359B2 |
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JP5550405B2 |
To provide a method for manufacturing a spring having a painted surface, the method being capable of reducing a time period required for performing a paint baking process and low temperature annealing process while performing these proce...
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JP5540433B2 |
To provide a high strength spring which has high settling resistance and durability and is used in a power train of an automobile.The high strength spring contains 0.50-0.70 mass% of C, 1.80-2.20 mass% of Si, 0.50-0.80 mass% of Mn, 0.50-...
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JP5527312B2 |
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JP5523241B2 |
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JP5521818B2 |
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JP5520591B2 |
Disclosed is steel for a leaf spring with high fatigue strength containing, in mass percentage, C: 0.40 to 0.54%, Si: 0.40 to 0.90%, Mn: 0.40 to 1.20%, Cr: 0.70 to 1.50%, Ti: 0.070 to 0.150%, B: 0.0005 to 0.0050%, N: 0.0100% or less, and...
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JP5511067B2 |
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JP5500324B1 |
A dual phase stainless steel pipe includes tensile yield strength YS LT of 689.1 MPa to 1000.5 MPa in a pipe axis direction of the dual phase stainless steel pipe, in which the tensile yield strength YS LT , a compressive yield strength ...
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JP5497655B2 |
The present invention relates to an axle forged from seamless tubes, with a chemical composition suitable to guarantee high fatigue strength, improved yield strength and tensile strength, and having reduced weight for use on railroad veh...
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JP2014087842A |
To provide a mechanical component that hardens a necessary part of a surface only by easy and simple press working and which leaves internal toughness as-is, and a method of manufacturing the same.A high-strength steel plate with a tensi...
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JP5494025B2 |
To provide a method for manufacturing of a laminated ring that enhances durability of a belt-shaped metal member. The method includes: a peripheral length adjusting step P8 for extending a peripheral length of the belt-shaped metal membe...
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JP5490991B2 |
Method for reducing the segregated seams of a steel which has high mechanical strength and high wear resistance and whose composition comprises by weight: 0.30%≰C≰1.42%; 0.05%≰Si≰1.5%; Mn≰1.95%; Ni≰2.9%; 1.1%≰Cr≰7.9%; 0.6...
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JP5472432B2 |
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JP5467408B2 |
To provide an austenitic stainless steel sheet for spring, excellent in spring threshold value, and a manufacturing method of the same, and the spring manufactured by using the same. This austenitic stainless steel sheet for spring has t...
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JP5457000B2 |
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JP5455327B2 |
A method for the surface treatment of ferritic/martensitic 9-12% Cr steels for the purpose of achieving an improved oxidation behavior and increased resistance to solid particle erosion at application temperatures of above 500° C., in p...
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JP5454658B2 |
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JP5455031B2 |
To provide a method for manufacturing a bearing ring, which can uniformly form a quench-hardened layer in the whole rolling face along the perimeter while suppressing a manufacturing cost of a quenching apparatus, and also can form the q...
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JP5441114B2 |
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JP5437944B2 |
Abstract: A purpose of the invention is to provide a spiral piece of steel having high mechanical strength and being capable of easily making smaller the pitch intervals of twisted portions (spiral blade portions) even without changing t...
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JP5431139B2 |
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