Entries |
Document | Title | Date |
20090205754 | Method for manufacturing slide member - A sliding surface | 08-20-2009 |
20090260721 | METHOD OF RESTRAINED-QUENCHING OF ANNULAR MEMBER - A method of restrained-quenching of an annular member, that can readily ensure a sufficient effect of restraint, increase treatment efficiency of a quench hardening treatment, and suppress production cost of the annular member, includes a heating step, a first cooling step, a restraint step, and a second cooling step. In the heating step, a bearing ring formed as the annular member is heated to a temperature not lower than an A | 10-22-2009 |
20090266453 | METHOD FOR PURIFYING AN INPUT MIXTURE COMPRISING CARBON DIOXIDE (CO2) AND CARBON MONOXIDE (CO), TO ELIMINATE THE CARBON MONOXIDE CONTAINED IN SAID MIXTURE - The invention concerns in particular a method for purifying an input mixture comprising carbon dioxide (CO2) and carbon monoxide (CO), to eliminate the carbon monoxide contained in said mixture, which consists in contacting, at a temperature higher than room temperature, the input mixture with a purifying material comprising at least one metal oxide, so as to bring about the reduction of the purifying material by the input mixture, leading to oxidization of at least part of the CO of the input mixture into CO2. The invention also concerns a gaseous chilling method and installation integrating such a purifying operation. | 10-29-2009 |
20090308499 | PROCESS FOR MANUFACTURING IRON-CARBON-MANGANESE AUSTENITIC STEEL SHEET WITH EXCELLENT RESISTANCE TO DELAYED CRACKING, AND SHEET THUS PRODUCED - An austenitic steel sheet excellent in resistance to delayed cracking, the composition of said steel comprising, in weight: 0,35%12-17-2009 | |
20100193084 | ALUMINUM-SILICON ALLOYS HAVING IMPROVED MECHANICAL PROPERTIES - A thermal treatment process for an article of a cast or wrought aluminum-silicon alloy with an eutectic phase. The process comprises a rapid heating of the article to an annealing temperature of 400° C. to 555° C. and maintaining the article at this temperature for a not more than 14.8 minutes. | 08-05-2010 |
20100263767 | HOT-ROLLED STEEL SHEET AND COLD-ROLLED STEEL SHEET AND MANUFACTURING METHOD THEREOF - A steel sheet excellent in mechanical strength, workability and thermal stability and suited for use as a raw material in such fields of manufacturing automobiles, household electric appliances and machine structures and of constructing buildings, and a manufacturing method thereof. are provided. The steel sheet is a hot-rolled steel sheet of carbon steel or low-alloy steel, the main phase of which is ferrite, and is characterized in that the average ferrite crystal grain diameter D (μm) at the depth of ¼ of the sheet thickness from the steel sheet surface satisfies the relations respectively defined by the formulas (1) and (2) given below and the increase rate X (μm/min) in average ferrite crystal grain diameter at 700° C. at the depth of ¼ of the sheet thickness from the steel sheet surface and said average crystal grain diameter D (μm) satisfy the relation defined by the formula (3) given below: | 10-21-2010 |
20110114227 | GRAIN REFINEMENT OF METALLIC COMPONENTS BY CONTROLLED STRAIN PATH CHANGE - Nowadays, the production of metallic parts, namely sheet metal, with high strength and formability, represents a big challenge for automotive, aerospace and assembling industries. The present invention deals with a new plastic deformation process that allows, by controlling the strain path change, the production of sheet metals with a grain size of 1-2 micron and, consequently, with a yield stress 3-4 times than the ones obtained with conventional processes, keeping the same formability. The process is easy for industrialization and its optimization requires only two fundamental parameters that characterize the ratio of thickness reduction, shear strain and amplitude in the change of strain path. | 05-19-2011 |
20120186704 | HIGH-STRENGTH SEAMLESS STEEL TUBE, HAVING EXCELLENT RESISTANCE TO SULFIDE STRESS CRACKING, FOR OIL WELLS AND METHOD FOR MANUFACTURING THE SAME - A seamless steel tube contains 0.15% to 0.50% C, 0.1% to 1.0% Si, 0.3% to 1.0% Mn, 0.015% or less P, 0.005% or less S, 0.01% to 0.1% Al, 0.01% or less N, 0.1% to 1.7% Cr, 0.4% to 1.1% Mo, 0.01% to 0.12% V, 0.01% to 0.08% Nb, and 0.0005% to 0.003% B or further contains 0.03% to 1.0% Cu on a mass basis and has a microstructure which has a composition containing 0.40% or more solute Mo and a tempered martensite phase that is a main phase and which contains prior-austenite grains with a grain size number of 8.5 or more and 0.06% by mass or more of a dispersed M | 07-26-2012 |
20130167979 | METHOD OF PREDICTING QUENCH CRACKING IN COMPONENTS FORMED BY HIGH DEFORMATION PROCESSES - A process for heat treating a component formed of an alloy. The process includes manipulating uniaxial strain test data of the alloy using a triaxiality factor to determine an equivalent multiaxial stress state. Conditions are then applied to the multiaxial stress state to identify a cooling path for the component. The cooling path includes boundaries for heat treatment temperatures and cooling rates that do not exceed predetermined stresses or strains and/or avoid predetermined residual stress patterns in the alloy. The component is then heated to a heat treatment temperature and quenched according to the cooling path identified in the applying step. | 07-04-2013 |
20150107724 | DUAL PHASE STAINLESS STEEL PIPE AND MANUFACTURING METHOD THEREOF - A dual phase stainless steel pipe includes tensile yield strength YS | 04-23-2015 |
20160067760 | SURFACE LAYER GRAIN REFINING HOT-SHEARING METHOD AND WORKPIECE OBTAINED BY SURFACE LAYER GRAIN REFINING HOT-SHEARING - Provided is a surface layer grain refining hot-shearing method including: heating and keeping a steel sheet in a temperature range of from Ac3 to 1400° C. to austenitize the steel sheet; subsequently shearing the steel sheet in a state in which the steel sheet is placed on a die; and quenching by rapidly cooling the sheared steel sheet, wherein a start temperature of the shearing is set to be a temperature (° C.) obtained by adding a temperature of from 30° C. to 140° C. to a previously measured Ar3 of the steel sheet. | 03-10-2016 |
20160123951 | Software and Method of Calculation of Carbon Concentration Distribution - A method of calculation of carbon concentration distribution in a member as a result of carburizing includes calculating n-dimensional carbon diffusion of the member, determining calculation region for which (n+1)-dimensional carbon diffusion of the member is calculated, determining a boundary condition of the (n+1)-dimensional calculation region, and calculating the (n+1)-dimensional carbon diffusion by applying the n-dimensional calculation result to the boundary condition of the (n+1)-dimensional calculation region. Further, software for calculating carbon concentration distribution in a member as a result of carburizing includes outputting a calculation result by calculating n-dimensional carbon diffusion of the member, and outputting a calculation result by calculating (n+1)-dimensional carbon diffusion of the member by applying the n-dimensional calculation result to a boundary condition of a calculation region for which the (n+1)-dimensional carbon diffusion of the member is calculated. | 05-05-2016 |