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Patent Searching and Data


Matches 401 - 450 out of 2,156

Document Document Title
WO/1996/002677
A method of making high-strength steel parts 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 upsetting, forging, or e...  
WO/1996/002676
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...  
WO/1995/026423
A high manganese steel having superior hot workability is disclosed, in which small amounts of the alloying elements are added into a high manganese steel of Fe-Mn-Al-C system, so that the rupture strength of the grain boundaries of colu...  
WO/1995/025821
Laser shock peening/processing (LSP) has been used to strengthen fatigue-critical areas in metal parts. Notwithstanding the advantages, one negative effect of LSP occurs at the boundary of the LSP-treated area. In LSP, the laser pulse in...  
WO/1995/023876
A method of treatment of a shape memory alloy involves shot peening of the alloy sample to modify the structure of the surface layer of the sample without substantially affecting bulk characteristics of the material, particularly the sha...  
WO/1995/013102
The surface of a surgically-implantable prosthetic device is impacted with particles of the same material as the device to form the surface into a desired pattern of roughness.  
WO/1995/010635
A process for producing a hot forging steel of ferrite plus bainite type which comprises hot forging a steel material containing, on the weight basis, 0.10-0.35 % of carbon, 0.15-2.00 % of silicon, 0.40-2.00 % of manganese, 0.03-0.10 % o...  
WO/1995/002705
High strength steel parts 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 warm forming ...  
WO/1995/001459
Steel with ultrafine grains is produced by altering the transformation from one which normally proceeds with grain boundary nucleation followed by intragranular nucleation at deformation bands and other defects, to one which induces a su...  
WO/1994/023085
The invention provides a steel material for non-heat-treated steel parts having a high strength in a state formed by hot working. A high-strength non-heat-treated steel for hot forging, which contains carbon, silicon, manganese, chromium...  
WO/1994/021427
The invention relates to a process for hard-rolling a component (2) to be loaded along a load axis (1) in a notch (3) running approximately parallel to the load axis (1) and having a minimum radius of curvature (4) to be determined in a ...  
WO/1994/013842
A method of making high-strength steel parts 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 upsetting, forging, or e...  
WO/1994/004297
The method and apparatus for reclaiming substantially pure sand from a heat treating furnace (19); wherein a casting with sand core and/or sand mold, comprising sand bound by a combustible binder, attached thereto is introduced into the ...  
WO/1993/023576
Apparatus for effecting domain refinement of electrical steels comprises an assembly of an array of rotatable members (2) mounted within a supporting structure (3) and movable into direct contact with the surface of a strip or sheet of e...  
WO/1993/020247
Device comprising an ultrasonic oscillation transducer (1), an acoustic transmitter (2) made from a titanium alloy, disposed in space in a given manner and connected to the transducer (1) by means of a contact surface (3), a work chamber...  
WO/1993/018869
The invention concerns a process for reducing scale formation during hot forming of metal, in particular steel. The metal, which is formed in its heated state and under brief high pressure, the deformation being substantially plastic, is...  
WO/1993/018189
Sway bars (10) made of high strength steel having grains (15) with a preferred orientation, and methods of making such sway bars (10) from blanks of high strength steel typically having a yield strength of at least about 90,000 psi and a...  
WO/1993/015233
High strength steel parts 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 warm forming ...  
WO/1992/008817
A high-strength ultrafine steel wire with excellent workability in stranding, which comprises, by weight, 0.85 to 1.10 % of carbon, 0.10 to 0.70 % of silicon, 0.20 to 0.60 % of manganese, 0.10 to 0.60 % of chromium, 0.005 % or less of al...  
WO/1992/007966
High strength steel parts 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 warm forming ...  
WO/1992/005897
A gear wheel is formed from a pressed and sintered powder metal blank (2) by surface hardening the tooth, root and flank regions to establish densification in the range of 90 to 100 per cent to a depth of at least 380 microns.  
WO/1990/011849
A method of producing a so-called 'rollable metal sheet' having high rollability, essentially comprising the step of supplying continuously molten metal to a cooling member whose cooling surface consists of one or two surfaces and are mo...  
WO/1989/010806
A method for correction shape deviations in hard, hardened objects in which the objects are heated to a temperature which lies beneath the temperature at which the structure imparted to the objects during a preceding heating process (e.g...  
WO/1988/007588
The invention relates to a material (504), having adjacent regions of differing strength and ductility, that has been formed by rapidly deforming a suitable base metal (501) having a banded structure, such as illustratively a previously ...  
WO/1988/007587
The invention relates to apparatus and accompanying methods for use therein for forming a material (504), which has high strength and good workability, by rapidly deforming a suitable base metal (501) having a banded structure, such as i...  
WO/1987/004093
A method of preparing a metal base for a memory disk, wherein coining is performed by placing a metal blank material (6) between two dies having smooth working surfaces within a metal mold (3) which confines the spreading of the blank ma...  
WO/1987/000866
An ultra high carbon steel having a composition of carbon in an amount of from about 0.8 weight percent up to the maximum solubility limit of carbon in austenite; silicon in an amount of from about 3 to about 7 weight percent; an effecti...  
WO/1985/002566
A penetrator (60) is made in accordance with a method for increasing strength and/or hardness of a metal specimen. Compressive force is applied to the specimen slowly so that the yield strength of the specimen progressively increases and...  
WO/1984/002481
A method for increasing strength and/or hardness of a preshaped metal specimen (18) by cold working. Compressive force is applied to the specimen slowly so that the yield strength of the specimen progressively increases and the specimen ...  
WO/1984/001586
Armouring bars which are treated by hardening in a cooling liquid and thereafter by drawing temper owing to the core heat exhibit a mantel treated by hardening and drawing temper having an uneven thickness so that it is difficult to bend...  
WO/1983/002783
A method of continuously casting a molten ferrous alloy in a casting means (12) to obtain a solidified cast bar (20) at a hot-forming temperature, passing the cast bar (20) at a hot-forming temperature from the casting means (12) to a ho...  
JP2014055343
To provide a compression coil spring having high durability and to provide its manufacturing method.A compression coil spring uses a steel wire containing, by wt.%, C: 0.45 to 0.80%, Si: 0.15 to 2.50%, Mn: 0.3 to 1.0% and the balance iro...  
JP2013245782
To set a roughness shape to simultaneously satisfy two properties, prevention of oil film formation and restraining of abrasion, required for a part while reducing control burden when controlling the sheave-surface roughness shape of an ...  
JP2013241961
To provide a gear manufacturing method capable of obtaining strength improvement effect of a tooth flank, and a gear.A gear manufacturing method includes a gear forming process for forming a gear and a surface modification treatment proc...  
JP2013233589
To provide a peening method which improves fatigue strength by introducing compressive residual stress without giving deformation causing another stress concentrating part to a welding part, and is suitable for applying a steel structure...  
JP2013233590
To provide a welded joint which has improved fatigue strength by introducing compressive residual stress without giving deformation causing another stress concentrating part to a welding part, and is suitable for applying a steel structu...  
JP2013230536
To provide a surface treatment method capable of smoothing a surface itself of a metal member on which a nanocarbon film is formed, and reliably fixing the nanocarbon film to the surface of the metal member.In a surface treatment method ...  
JP2013220509
To provide a shot peening method capable of excellently improving the tooth flank fatigue strength of a gear material, and to provide a gear material using the same.In a shot peening method, a shot material having a granular diameter wit...  
JP2013213260
To provide a surface treatment method of a gear, capable of improving the conformability of a tooth surface after being subjected to a treatment in which the tooth surface of a gear is highly hardened.A surface treatment method of a gear...  
JP2013204103
To provide a high strength steel pipe of API X100 grade, superior in buckling resistance and toughness at low temperatures after coating treatment, a method for producing the high strength steel pipe, and a method for producing a steel s...  
JP2013202670
To provide an easy method for improving simultaneously both tensile strength and fracture toughness of high-strength ferrite/martensitic steel in a low temperature region.A method includes: a first step of enhancing tensile strength of a...  
JP2013189692
To provide a method for producing a steel material which produces a steel material having high strength and high ductility.Parent materials 1a and 1b for a steel material are heated to at least AC1 point, which is the temperature at whic...  
JP2013170305
To provide a simple method for determining chemical conversion treatability of steel, and a method for producing steel excellent in chemical conversion treatability utilizing the same.Target steel is immersed in a chemical solution (chem...  
JP2013169580
To prevent concentration of stress from occurring on an area that has had a weld toe by performing an ultrasonic impact treatment.An after-shock shaft center contact portion/R2 end distance A as a horizontal distance between a contact po...  
JP2013159802
To provide a coil spring which achieves the reduction in material cost and the simplification of a production process without lowering a yield rate and is excellent in fatigue resistance.A coil spring has a composition comprising, by mas...  
JP2013155431
To provide a high-strength high-ductility iron alloy.This iron alloy comprises Ni, Al, C and the balance being Fe and unavoidable impurities. In the iron alloy, Fe, Ni and Al are within a composition range yielding average valence electr...  
JP2013154697
To provide a wheel bearing device with enhanced fatigue strength and durability by removing a decarburized layer formed between a gear part and a spline part, formed by heat treatment of an inner wheel, and to provide a method for manufa...  
JP2013133533
To provide: austenitic stainless steel which is applied for a steel pipe having an inner face subjected to shot peening treatment among heat exchanger pipes used in a thermal power generation facility and has improved scale exfoliation r...  
JP2013116498
To solve the problem with various restrictions as a result of the shape of a product.An autofrettage processing device includes: a workpiece (1) having a workpiece end opening (14) and an inner pressure chamber (IC), wherein the inner pr...  
JP2013112826
To provide a gear having excellent wear resistance and surface fatigue characteristics that is suitable for use in automobiles and various industrial machines, and a manufacturing method therefor.An induction hardening gear includes a co...  

Matches 401 - 450 out of 2,156