Patent application number | Description | Published |
20090000703 | Ferritic stainless steel sheet superior in shapeability and method of production of the same - The present invention provides a ferritic stainless steel sheet superior in shapeability containing, by wt %, C: 0.001 to 0.010%, Si: 0.01 to 1.0%, Mn: 0.01 to 1.0%, P: 0.01 to 0.04%, Cr: 10 to 20%, N: 0.001 to 0.020%, Nb: 0.3 to 1.0%, and Mo: 0.5 to 2.0%, wherein the total precipitates are, by wt %, 0.05 to 0.60%. A method of production of a ferritic stainless steel sheet superior in shapeability comprising producing a cold rolling material in the production process so that the Nb-based precipitates become, by vol %, 0.15% to 0.6% and have a diameter of 0.1 μm to 1 μm and/or so that the recrystallized grain size becomes 1 μm to 40 μm and the recrystallization rate becomes 10 to 90%, then cold rolling and annealing it at 1010 to 1080° C. | 01-01-2009 |
20090092513 | Ferritic Stainless Steel Sheet Superior in Heat Resistance - The present invention provides, as a material superior in heat resistance in a hot environment where the maximum temperature of the exhaust gas becomes 750 to 900° C., ferritic stainless steel sheet superior in heat resistance in a broad temperature region of 750 to 900° C. with long term stability by a smaller amount of addition of Mo than SUS444 containing about 2% of expensive Mo, that is, ferritic stainless steel sheet superior in heat resistance characterized by containing, by mass %, C: 0.01% or less, N: 0.02% or less, Si: 0.05 to 1%, Mn: 0.1 to 2%, Cr: 10 to 30%, Mo: 0.1 to 1%, Cu: 1 to 2%, Nb: 0.2 to 0.7%, Ti: 0.01 to 0.3%, and B: 0.0002 to 0.0050%, having a balance of Fe and unavoidable impurities, and having a 0.2% yield strength at 750° C. of 70 MPa or more. | 04-09-2009 |
20090160217 | Structural component for automobile, two-wheeled vehicle or railcar excellent in impact-absorption property, shape fixability and flange cuttability, and method for producing the same - The invention provides structural component for an automobile, two-wheeled vehicle or railcar excellent in impact-absorption property, shape fixability and flange cuttability, and method for producing the same, which structural component has a hat-like shape including vertical walls and flanges, wherein distal ends of the flanges contain 20 vol % or greater of austenite phase and have a cross-section hardness expressed as Vickers harness of 150˜350, and a center regions of the vertical walls have, in a common cross-section with the flanges, a content of deformation-induced martensite phase exceeding that of the distal ends of the flanges by 10 vol % or greater and a cross-section hardness expressed as Vickers hardness that exceeds that of the distal ends of the flanges by 50 or greater. | 06-25-2009 |
20100092218 | IMAGE FORMING APPARATUS - An image forming apparatus includes: a first rotary body; a second rotary body provided to face the first rotary body, wherein the first rotary body and the second rotary body form a nip portion by coming in contact with each other to rotate, at which a sheet bearing a toner image is conveyed while being heated and pressed, thereby fixing the toner image onto the sheet; a first nozzle which blows air to a first air blowing position established on a circumferential surface of the first rotary body and on a side of an outlet of the nip portion; and a second nozzle which blows air to a second air blowing position established on a circumferential surface of the second rotary body and established downstream of the first air blowing position in a traveling direction of the sheet. | 04-15-2010 |
20100218856 | Cr-Containing Steel Superior in Heat Fatigue Charateristics - The present invention provides Cr-containing steel superior in heat fatigue characteristics, that is, Cr-containing steel superior in heat fatigue characteristics, characterized by containing, by mass %, C: 0.01% or less, N: 0.015% or less, Si: 0.8 to 1.0%, Mn: 0.2 to 1.5%, P: 0.03% or less, S: 0.01% or less, Ni: 0.2% or less, Cu: 0.2% or less, Cr: 13 to 15%, Mo: 0.1% or less, Nb: 0.3 to 0.5%, Ti: 0.05 to 0.2%, V: 0.01 to 0.2%, Al: 0.015 to 1.0%, and B: 0.0002 to 0.0010%, satisfying (Nb+1.9×Ti)/(C+N)≦50, and having a balance of Fe and unavoidable impurities, wherein a 0.2% yield strength at 800° C. after aging at 800° C. for 100 hours or more is 20 MPa or more and a drawability value at 200° C. is 35% or more and wherein a soluble Nb amount+soluble Ti amount after aging at 800° C. for 100 hours or more is 0.08% or more. | 09-02-2010 |
20100233015 | Stainless Steel Sheet for Structural Components Excellent in Impact Absorption Property - This invention provides a steel sheet for structural components excellent in impact absorption property comprising, in mass %, C: 0.005 to 0.05%, N: 0.01 to 0.30%, Si: 0.1 to 2%, Mn: 0.1 to 15%, Ni: 0.5 to 8%, Cu: 0.1 to 5%, Cr: 11 to 20%, Al: 0.01 to 0.5%, and a balance of Fe and unavoidable impurities, wherein Md | 09-16-2010 |
20100294402 | FERRITE-AUSTENITE STAINLESS STEEL SHEET FOR STRUCTURAL COMPONENT EXCELLENT IN WORKABILITY AND IMPACT-ABSORBING PROPERTY AND METHOD FOR PRODUCING THE SAME - This stainless steel sheet includes, in terms of mass %, C: 0.001 to 0.1%, N: 0.01 to 0.15%, Si: 0.01 to 2%, Mn: 0.1 to 10%, P: 0.05% or less, S: 0.01% or less, Ni: 0.5 to 5%, Cr: 10 to 25%, and Cu: 0.5 to 5%, with a remainder being Fe and unavoidable impurities, and contains a ferrite phase as a main phase and 10% or more of an austenite phase, wherein a work-hardening rate in a strain range of up to 30% is 1000 MPa or more which is measured by a static tensile testing and a difference between static and dynamic stresses which occur when 10% of deformation is caused is 150 MPa or more. This method for producing a stainless steel includes annealing a cold-rolled steel sheet under conditions where a holding temperature is set to be in a range of 950 to 1150° C. and a cooling rate until 400° C. is set to be in a range of 3° C./sec or higher. | 11-25-2010 |
20110164907 | SURFACE TREATMENT APPARATUS FOR RECORDING MATERIAL AND IMAGE FORMING APPARATUS - A surface treatment apparatus for recording material, includes: a resin film to be adhered to a toner image surface of a toner image carried on the recording material after a whole region of the toner image has been heat treated; a heating section including a plurality of heating elements provided on an opposite side of the recording material relative to the resin film; and a control section which controls the heating section, wherein the control section performs a current control of a predetermined part of the plurality of heating elements selectively in a state where the recording material and resin film contacts each other and recording material moves relatively to the heating section. | 07-07-2011 |
20120014830 | FERRITIC STAINLESS STEEL EXCELLENT IN HEAT RESISTANCE AND WORKABILITY SHEET - Ferritic stainless steel excellent in heat resistance and workability which contains, by mass %, C: 0.02% or less, N: 0.02% or less, Si: 2% or less, Mn: 2% or less, Cr: 10 to 20%, Cu: 0.4 to 3%, Ti: 0.01 to 0.5%, and B: 0.0002 to 0.0030% and has a balance of Fe and unavoidable impurities. | 01-19-2012 |
20130149187 | HEAT-RESISTANT FERRITIC STAINLESS STEEL SHEET HAVING EXCELLENT OXIDATION RESISTANCE - A heat-resistant ferritic stainless steel sheet having excellent oxidation resistance while being low in cost and optimal for use in exhaust system components, wherein mass % falls within the following ranges: C: 0.015% or less, N: 0.020% or less, P: 0.04% or less, S: 0.001% or less, Si: 0.3-1.5% or less, Mn: 0.3-0.7% or less, Cr: 11.0-17.0%, Cu: 0.8-1.5%, Ni: 0.05-1.0%, V: 0.5% or less, Al: over 0.01 up to 0.1%, Ti: 10(C+N) to 0.3%. Also, the element content of the elements in the ferritic stainless steel sheet having excellent oxidation and thermal resistance has been mutually adjusted in a manner such that the value of γ defined in formula (1) is 35 or less. | 06-13-2013 |
20150044085 | FERRITIC STAINLESS STEEL SHEET - To provide a ferritic stainless steel sheet which has high scale spalling even at a high temperature around 1000° C. Provided is a ferritic stainless steel sheet having excellent Mn-containing oxide film-forming ability and scale spalling ability, containing, in terms of mass %: C: 0.001 to 0.020%, N: 0.001 to 0.020%, Si: 0.10 to 0.40%, Mn: 0.20 to 1.00%, Cr: 16.0 to 20.0%, Nb: 0.30 to 0.80%, Mo: 1.80 to 2.40%, W: 0.05 to 1.40%, Cu: 1.00 to 2.50%, and B: 0.0003 to 0.0030%, in which the above-mentioned components are contained satisfying the formula (1) below, and the balance is composed of Fe and inevitable impurities. At least one of N, Al, V, Mg, Sn, Co, Zr, Hf, and Ta may be added in a predetermined content range. | 02-12-2015 |
20150083283 | HEAT-RESISTANT AUSTENITIC STAINLESS STEEL SHEET - The present invention is directed to a heat-resistant austenitic stainless steel sheet comprising, by mass %, C: 0.03% to 0.06%, N: 0.1% to 0.3%, Si: 1% or less Mn: 3% or less, P: 0.04% or less, S: 0.03% or less, Ni: 5 to 12%, Cr: 15 to 20%, Al: 0.01% to 0.1%, Nb: 0.05% to 0.3%, V: 0.05% to 0.30%, Ti: 0.03% or less, (Nb+V)/(C+N):2 or less and further a balance of Fe and unavoidable impurities, and wherein an amount of precipitates mainly comprised of carbonitrides is 1% or less. | 03-26-2015 |