| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 427314000 | Heating or drying pretreatment | 45 |
| 20090191345 | THERMALLY EFFICIENT TOOLING FOR COMPOSITE COMPONENT MANUFACTURING - A method and apparatus for manufacturing composite components. A tool is present for use in manufacturing composite components. The tool comprises an encapsulation layer having a shape, an insulation layer on the encapsulation layer, and an isolation layer on the insulation layer. The isolation layer has an outer surface capable of contacting a composite material laid up on the outer surface. The insulation layer is capable of insulating the encapsulation layer from heat applied to the composite material. The encapsulation layer is capable of maintaining a shape with the composite material laid up on the isolation layer during a curing process to form a composite component from the composite material. | 07-30-2009 |
| 20110217469 | Methods and Systems of Transferring, Docking and Processing Substrates - In accordance with some embodiments described herein, a method for transferring a substrate is provided. The method includes loading one or more substrates into a respective mobile chamber of one or more mobile chambers. The mobile chambers are movable on a first rail positioned adjacent to two or more process modules. Each mobile chamber is configured to maintain a specified gas condition. The respective mobile chamber is moved along the first rail. The respective mobile chamber is docked to a respective process module of the two or more process modules. At least one of the one or more substrates is conveyed from the respective mobile chamber to the respective process module. | 09-08-2011 |
| 20130115375 | STONE SEALING SYSTEMS AND METHODS - This disclosure is related to systems and methods of sealing a stone and is particularly useful for sealing a stone countertop, though it could also be applied to stone tiles or other types of stone products. In one example, a method for sealing stone may include applying heat to a stone and applying a sealant to the stone when the temperature of the stone is above a temperature threshold. The sealant may be an impregnating sealer. | 05-09-2013 |
| 20100323111 | Colloidal Palladium Activators and Methods Thereof - A colloidal palladium activator is provided which includes colloidal palladium particles; sodium chloride; glyoxylic acid; hydrochloride solution; stannous chloride; and a stabilizer. | 12-23-2010 |
| 20090280254 | METHOD FOR COLORING SOLDER - A method of coloring solder is provided. The method includes providing an aqueous coloring agent solution essentially containing 31-32% wt of copper sulfate, 64-65% wt of water and 3-4% wt of salt and an anti-caking agent, drying a solder seam with a dry cloth to remove excess flux, applying the aqueous coloring agent solution directly onto the solder seam; and wiping away excess amounts of the aqueous coloring agent solution with a second dry cloth. | 11-12-2009 |
| 20080226827 | Powder Paint Composition - The invention is directed to a thermosetting powder paint composition comprising a thermosetting amorphous polyamide. The amorphous polyamide has a glass transition temperature between 20° C. and 200° C. The polyamide may be a carboxyl-, a hydroxyl- or an amine functional polyamide. A carboxyl functional polyamide has an acid number between 10 and 150 mg of KOH/gram of resin. The invention also relates to a thermosetting powder paint composition comprising a thermosetting amorphous polyamide and an additive comprising a copper halogenide and another halogenide. The invention further relates to a process for coating a substrate at low temperature cure (LTC) conditions and a composition suitable for LTC. | 09-18-2008 |
| 20090136670 | Apparatus and Method for Treating Substrate - The present invention provides a method that can maintain the temperature of a wafer at a process temperature before a coating process is performed by supplying a photoresist. According to the present invention, a thinner which helps a diffusion of the photoresist is supplied onto the wafer before the photoresist is supplied. The thinner is supplied in a temperature-controlled state such that the wafer has the process temperature by the thinner. | 05-28-2009 |
| 20090098297 | HEAT-TREATING APPARATUS, HEAT-TREATING METHOD AND STORAGE MEDIUM - A straightening plate provided in its central part with a gas exhaust opening is disposed under a face plate serving as a heating plate. A temperature-reducing purge ring is disposed between the face plate and the straightening plate. The temperature-reducing purge ring has an outside diameter substantially equal to that of the straightening plate and is provided in its inner circumference with plural gas jetting holes. The temperature-reducing purge ring is disposed close to the face plate such that a thin gap is formed between the temperature-reducing purge ring and the face plate. When a cooling gas is jetted radially inward through the gas jetting holes of the temperature-reducing purge ring, a vacuum is created between the lower surface of the face plate and the upper surface of the temperature-reducing purge ring. Consequently, a large amount of air is sucked into the space between the face plate and the straightening plate and flows together with the cooling gas, so that the face plate can be rapidly cooled. | 04-16-2009 |
| 20090098296 | METHOD FOR MANUFACTURING COATED PIPES - The invention concerns a method for manufacturing pipes coated with a peelable protection layer, wherein the core pipe ( | 04-16-2009 |
| 20100119714 | METHOD AND DEVICE FOR PRODUCING AN AT LEAST ESSENTIALLY WOOD-FREE COATED PAPER WEB - The present invention provides a method and device for the efficient production of a substantially wood free coated web. In particular, a method for producing an at least substantially wood free coated web includes the application of a double coating on at least one side of the web, whereby the last coating application occurs by means of a contactless coating process. | 05-13-2010 |
| 20090311430 | COATING APPARATUS AND COATING METHOD - According to a coating method of the present invention, a second member | 12-17-2009 |
| 20090155469 | WATERLESS, LOW VOLATILE ORGANIC COMPOUND AND CARBON DIOXIDE EMISSION, MODULAR PAINT SYSTEM AND METHOD OF PERFORMING THE SAME - The present invention is directed to a modular waterless, low VOC and CO | 06-18-2009 |
| 20090142494 | Process for Producing Honeycomb Bodies for Thermal Regenerators - A process for producing a honeycomb body from a noncatalytically active ceramic material for thermal regenerators, comprising the steps of (a) providing a block-shaped monolithic honeycomb body created by extrusion that includes in its interior longitudinal channels; (b) applying a thermal pretreatment to the honeycomb body; (c) after step (b), coating or masking the outer walls of the honeycomb body with a glaze-repellent coating, coating all the longitudinal channels of the honeycomb body with a glaze, and then drying the honeycomb body; and (d) after step (c), performing a firing operation at a temperature typical for the glazed material. | 06-04-2009 |
| 20110229644 | GLASS COATING PROCESS AND APPARATUS - A process and an apparatus for coating glass substrate by using at least one or more liquid raw materials which react essentially on or in the vicinity of at least a portion of the glass substrate surface. The process comprises steps: a) heating the glass substrate to at least substantially the coating temperature; b) forming a coating on the glass substrate surface by converting the one or more liquid materials to a liquid-aerosol and depositing at least a fraction of the liquid-aerosol on the glass substrate surface; c) repeating step b) at least once; and d) heating the glass substrate surface before at least one of the steps b). The heating in step d) is carried out by convective heating. | 09-22-2011 |
| 20110229643 | INK SET - An ink set containing at least one ink of which viscosity at 70° C. is 100 mPa·s or more, and at least one ink of which color hue is the same as the above ink and of which viscosity at 70° C. is 30 mPa·s or less. | 09-22-2011 |
| 20090074971 | Water-Stabilized Antimicrobial Organosilane Compositions, and Methods for Using the Same - The present invention relates to water-stable compositions formed by mixing an organosilane, optionally having a non-hydrolyzable organic group, but having one or more hydrolyzable groups, and an acidified stabilizing solution prepared from at least one acid, and at least one cationic surfactant, preferably at least one quaternary ammonium salt (QAS), in water. The composition does not comprise glycol ether. The present invention also relates to methods of treating a substrate by mixing or contacting the substrate with the composition of this invention for a period of time sufficient for treatment of the substrate, methods of antimicrobially treating a food article, methods of antimicrobially coating a fluid container, methods of dyeing and treating a substrate, and methods of antimicrobially coating a latex medical article. The invention also pertains to a treated substrate comprising the composition of this invention. | 03-19-2009 |
| 20090110834 | Corrosion and abrasion resistant coating - A corrosion and abrasion resistant coating composition with at least one alkoxy siloxane and preferably at least two alkoxy siloxanes, wherein the total amount of alkoxy siloxanes in the composition is greater than approximately 70 wt %, a hydrolysable catalyst, an adhesion promoter, and a flow/leveling agent. | 04-30-2009 |
| 20100255202 | Method and Device for Coating Metallic Pipes or Other Long Components Which Have a Restricted Cross Section - In order to mechanically coat relatively long components under temporally and economically optimum conditions, in particular to coat the components continuously, the method is characterised by the following steps: supplying the pipe to be coated into a first processing line in which the pipe is transported axially, preheating the pipe or a portion of the pipe, applying a primer coat, heating the pipe to achieve a polarisation between primer coating and pipe, drying the pipe to completely expel all soluble constituents, feeding the pipe into a second processing line in which the pipe is transported axially, preheating the pipe, applying the coating in a cross-head extruder, heating the pipe in an induction furnace, curing the coated pipe, and cooling the coated pipe. | 10-07-2010 |
| 20080311301 | Protection Against the Oxidation of Composite Materials Containing Carbon - A part made of a porous material containing carbon, in particular a C/C composite material, is protected against oxidation by being impregnated with a composition in an aqueous medium containing at least a phosphorous compound, elemental titanium, and boron or a boron compound other than titanium diboride, to form in the presence of oxygen and at least one alkali or alkaline-earth element M that catalyses oxidation of carbon, at least one P—O—Ti-M type association bonded by boron oxide B | 12-18-2008 |
| 20100196605 | Yttria-Stabilized Zirconia Coating with a Molten Silicate Resistant Outer Layer - A turbine engine component is provided which has a substrate, a yttria-stabilized zirconia coating applied over the substrate, and a molten silicate resistant outer layer. The molten silicate resistant outer layer is formed from gadolinia or gadolinia-stabilized zirconia. A method for forming the coating system of the present invention is described. | 08-05-2010 |
| 20110305838 | METHOD OF PRODUCTION OF A DEPOSIT OF NANOPARTICLES WITH INCREASED ADHESION AND DEVICE FOR IMPLEMENTATION OF SUCH A METHOD - A device intended to accomplish the deposition of particles of nanometric size on at least one part of the surface ( | 12-15-2011 |
| 20090208655 | Method for manufacturing a bituminous coated material consisting of adding the binder and a portion of the solid mineral fractions simultaneously to the mixer - The invention relates to a method for manufacturing a bituminous coated material comprising mineral solid fractions coated with a binder, wherein the method comprises a step of heating a portion of said mineral solid fractions and adding separately but simultaneously the binder and the remaining portion of said mineral solid fractions. | 08-20-2009 |
| 20110318493 | CHEMICAL BATH DEPOSITION APPARATUSES AND FABRICATION METHODS FOR CHEMICAL COMPOUND THIN FILMS - Chemical bath deposition (CBD) apparatuses and fabrication methods for compound thin films are presented. A chemical bath deposition apparatus includes a chemical bath reaction container, a substrate chuck for fixing a substrate arranged face-down toward the bottom of the chemical bath reaction container, multiple solution containers connecting to a reaction solution mixer and further connection to the chemical bath reaction container, and a temperature control system including a first heater controlling the temperature of the chemical bath reaction container, a second heater controlling the temperature of the substrate chuck, and a third heater controlling the temperature of the multiple solution containers. | 12-29-2011 |
| 20120107507 | METHOD OF MANUFACTURING A SIFTING SCREEN - A sifting screen and method of manufacturing such a screen. Segments of the screen are provided with a unique cross-sectional structure to afford various desirable characteristics to such an implement. The cross section includes, typically, a wire frame, a hard plastic encapsulation layer and an elastomeric outer layer. | 05-03-2012 |
| 20120082792 | METHOD FOR MANUFACTURING SOIL-RESISTANT GLASS AND SOIL-RESISTANT GLASS - A method for manufacturing soil-resistant glass the surface of which is covered with a coating film having a high hardness, and the soil-resistant glass are provided. A coating film comprising titania or/and titania-silica is formed by coating a glass surface with a photocatalyst solution comprising the titania or/and the titania-silica each having a photocatalytic function and heating the applied photocatalyst solution at a temperature higher than at least 100° C. The heating temperature may be a temperature higher than 100° C. and 300° C. or lower. The time of heating at the above-mentioned temperature may be at least 2 minutes or longer. | 04-05-2012 |
| 20110274841 | COIL SPRING COATING PORTION FORMING METHOD AND APPARATUS - In a coating portion forming method of a coil spring, the method includes steps of heating the coil spring, dipping the heated coil spring in a thermosetting resin solution, and reheating the coil spring which is pulled up from the thermosetting resin solution. | 11-10-2011 |
| 20110159192 | APPARATUS FOR COATING PIPES - Apparatus for coating a pipe. The apparatus includes a first frame to be mounted on a pipe and a second frame rotatably mounted on the first frame. An induction heating coil comprised of electrical conductors is mounted on the apparatus. A coating applicator is mounted on the second frame and is arranged to apply coating onto a surface of the pipe on which the apparatus is mounted. The first frame, second frame and coating applicator are arranged such that when the apparatus is mounted on the pipe, the applicator is disposed to one side of the induction heating coil and able to apply coating to a surface of the pipe alongside the surface of the pipe underlying the induction heating coil. The first frame may be operable between an open state in which the frame may be placed over and removed from a pipe and a closed state in which the frame may capture a pipe thereby to mount the apparatus on the pipe. | 06-30-2011 |
| 427316000 | Organic base | 6 |
| 20100119715 | Method of making a solvent-free polymer-based tire sealant - The invention relates to a method for the production of a tire sealant (C) with a polymeric base. A highly viscous first sealant component (A) (including a natural rubber component that is undiluted or diluted with at least one additional natural rubber component and mixture ingredients that are free of a solvent and an activator) is mixed with at least one second sealant component (B) (comprising a separately produced medium with low viscosity containing at least one activator), to combine to the tire sealant (C), wherein a cross linking occurs associated with the subsequent application of the tire sealant (C) to the inside of the tire. Appropriate method steps are disclosed. | 05-13-2010 |
| 20130034658 | POLY-TRIMETHYLENE TEREPHTHALATE SOLID CORE FIBRILLATION-RESISTANT FILAMENT HAVING A SUBSTANTIALLY TRIANGULAR CROSS SECTION, A SPINNERET FOR PRODUCING THE FILAMENT, AND A CARPET MADE THEREFROM - In a first aspect the invention is a solid core fibrillation-resistant, synthetic polymeric filament having three substantially equal length convex sides. The sides through substantially rounded tips centered by a distance “a” from the axis of the filament. Each rounded tip has a radius substantially equal to a length “b”. Each tip lies on a circumscribed circle having a radius substantially equal to a length (a+b) and the midpoint of each side lies on an inscribed circle having a radius substantially equal to a length “c”. The filament has a denier-per-filament in the range 10<“dpf”<35; the distance “a” lies in the range 0.00025 inches (6 micrometers)<“a”<0.004 inches (102 micrometers); the distance “b” lies in the range from 0.00008 inches (2 micrometers)<“b”<0.001 inches (24 micrometers); the distance “c” lies in the range from 0.0003 inches (8 micrometers)<“c”<0.0025 inches (64 micrometers); and the modification ratio (“MR”) lies in the range from about 1.1<“MR”| 02-07-2013 | |
| 20100104761 | Method for Coating Water-Absorbing Polymer Particles - A process for preparing water-absorbing polymer particles by spraying a liquid below the product bed surface by means of at least one spray nozzle in a mixer with moving mixing tools. | 04-29-2010 |
| 20090068363 | POLYMERIC COMPOSITION - The invention relates to a polymeric composition, comprising: at least one thermoplastic resin having a glass transition temperature of at least about 220° C.; inorganic particulates having an average particle size in the range up to about 100 nanometers dispersed in the thermoplastic resin, the inorganic particulates having an index of refraction in the range from about 1.4 to about 3; and an effective amount of at least one dispersant to disperse the inorganic particulates in the thermoplastic resin. The polymer composition may be a high temperature thermoplastic suitable for forming, such as by molding, optical articles such as lenses. | 03-12-2009 |
| 427317000 | Wood base | 2 |
| 20090169753 | System and Method For The Preservative Treatment of Engineered Wood Products - Systems and methods of making a wood enhancement agent treated engineered wood product. The wood enhancement agent typically includes at least one of a preservative, a water repel but, a fungicide, an insecticide, a stabilizing agent, wax, an ultra-violet light inhibitor, and combinations thereof, and may also include an antioxidant. The wood enhancement agent is incorporated into the engineered wood product during a billet making process or after forming the billet. The wood enhancement agent may be applied to a warm billet after steam press, or to a reheated billet, by dipping, spraying, or flood coating the billet, or by diffusion, vacuum impregnation, pressure, or a combination thereof. | 07-02-2009 |
| 20120121809 | FORMULATION AND PROCESS FOR TREATING WOOD SUBSTRATES - The present invention discloses a composition and method for the treatment of substrates such as, for example, wood. The inventive composition and method are useful for the treatment, protection and maintenance of wood and other similar materials. | 05-17-2012 |
| 427318000 | Metal base | 12 |
| 20080206468 | POLY(ARYLENE ETHER) COMPOSITION, METHOD, AND ARTICLE - A thermoplastic composition includes particular amounts of a poly(arylene ether), a hydrogenated block copolymer, a copolymer of ethylene and an alpha-olefin, a plasticizer, a white pigment, and an ultraviolet radiation stabilizer. The composition exhibits excellent light stability, and it is particularly useful for forming white or off-white cable insulation. | 08-28-2008 |
| 20130078379 | WHITE ETCHING CRACKS ROBUSTNESS INCREASE OF A ROLLER BEARING - A method of increasing white etching cracks robustness of a roller bearing. The method comprises the steps of heating the roller bearing to a temperature of between 100° C. and 200° C. for a duration of time between 5 minutes and 2 hours while bringing the bearing raceway surface in contact with a chemical additive and forming a white layer on a bearing raceway surface of the roller bearing and/or a material zone at the bearing raceway surface which has a lower yield point or yield stress than the original material of the roller bearing. | 03-28-2013 |
| 20120064251 | METHOD OF PREPARING A MAGNESIUM ALLOY SUBSTRATE FOR A SURFACE TREATMENT - A method of preparing a magnesium alloy substrate for an electroless electro-deposition surface treatment includes cleaning the magnesium alloy substrate in a wet solution, whereby a magnesium hydroxide layer is formed on an outer surface of the magnesium alloy substrate, and heating the magnesium alloy substrate to a temperature sufficient to convert the magnesium hydroxide layer to a magnesium oxide layer. | 03-15-2012 |
| 20100098865 | DURABLE REACTIVE THERMAL BARRIER COATINGS - A turbine engine component is provided which has a substrate and a thermal barrier coating applied over the substrate. The thermal barrier coating comprises at least one layer of a first material selected from the group consisting of a zirconate, a hafnate, a titanate, and mixtures thereof, which first material has been mixed with, and contains, from about 25 to 99 wt % of at least one oxide. The at least one oxide comprises at least one oxide of a material selected from the group consisting of lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium, scandium, indium, and yttrium. If desired, a metallic bond coat may be present between the substrate and the thermal barrier coating system. A method for forming the thermal barrier coating system of the present invention is described. | 04-22-2010 |
| 20090252877 | METHOD FOR RENDERING COLOR IMITATION ON A BAKING TRAY - A method for rendering color imitation on a baking tray comprises steps of: cleaning an inner object-supporting surface and an outer surface of the baking tray and forming a crystalline protective film thereon; oven-drying the cleaned baking tray; spray-coating said surfaces of the oven-dried baking tray with a primer and baking the primer; spray-coating said surfaces of the baking tray with a color paint which imitates a copper or a stainless-steel color and baking the color paint; and spray-coating said surfaces of the baking tray with a transparent non-stick coating and baking the transparent non-stick coating. With the method, surfaces of a baking tray made of a low-priced, carbon-steel or cast-iron substrate can be provided with a color imitating an expensive, fine-textured material such as copper or stainless steel and a non-stick effect. | 10-08-2009 |
| 20120076939 | METHOD OF PRODUCING ENDLESS BAND-SHAPED BODY - A method of producing an endless band-shaped body includes: forming a coating film by applying film-forming resin solution to an outer circumferential surface of a cylindrical core body that is being rotated around an axis of the cylindrical core body by a rotation device in a state where the axis of the cylindrical core body is horizontally directed, the cylindrical core body undergoing deformation into an oval cylindrical shape due to its own weight when left unsupported with the axis of the cylindrical core body directed horizontally; and drying the coating film formed on the outer circumferential surface of the rotating cylindrical core body. The rotation device includes plural rolls each disposed at a position that would touch an axial end region of the outer circumferential surface of the cylindrical core body in an undeformed state, and the cylindrical core body being supported by the first and second rolls. | 03-29-2012 |
| 20110236581 | TREATMENT SOLUTION FOR INSULATION COATING FOR GRAIN-ORIENTED ELECTRICAL STEEL SHEETS AND METHOD FOR PRODUCING GRAIN-ORIENTED ELECTRICAL STEEL SHEET HAVING INSULATION COATING - A treatment solution for insulation coating for grain-oriented electrical steel sheets contains at least one selected from phosphates of Mg, Ca, Ba, Sr, Zn, Al, and Mn; colloidal silica in a proportion of 0.5 to 10 mol in terms of SiO | 09-29-2011 |
| 20090074972 | METHOD FOR SUBSTRATE STABILIZATION OF DIFFUSION ALUMINIDE COATED NICKEL-BASED SUPERALLOYS - An article and method for stabilization of a nickel-based superalloy coated with a diffusion aluminide coating. The region below the aluminide coating is first carburized to form refractory carbides. The article is cleaned and masked as required so that regions that will not have an aluminide coating are not carburized. After placing the article into a furnace and heating in a non-oxidizing atmosphere to a carburizing temperature, a carburizing gas is introduced, and the near surface region is carburized to a depth of about 100 microns. Refractory carbides are formed in this region. When a diffusion aluminide coating is formed on the article, the refractory elements, being present as refractory carbides, are not available to form detrimental TCP phases. | 03-19-2009 |
| 427319000 | Metal coating | 4 |
| 20130059084 | Chemical Vapor Deposition of Metal Layers for Improved Brazing - A method of forming a metallic wetting layer on the surface of a metal component is provided, including the steps of placing the component into a chemical vapor deposition furnace, placing a metal-containing salt in the furnace, and heating the component and the metal-containing salt in the furnace to cause the metal from the metal-containing salt to deposit in a coating on the surface of the component forming a metallic wetting layer that improves the metallic bond of a subsequently applied brazing material. The process can be practiced with the addition of a cleaning reagent to both clean and coat in one operation. | 03-07-2013 |
| 20090123651 | Continuous Annealing and Hot Dip Plating Method and Continuous Annealing and Hot Dip Plating System of Steel sheet Containing Si - The present invention provides, in a hot dip plating system having an annealing furnace for hot dip plating steel sheet containing Si, a continuous annealing and hot dip plating method and system causing internal oxidation without causing surface oxidation of the Si in the steel and avoiding a drop in the plating ability of the steel sheet and retardation of alloying, that is, a continuous annealing and hot dip plating method using an annealing furnace having, in order, a front heating zone, rear heating zone, soaking zone, and cooling zone and a hot dip plating bath, comprising heating or soaking the steel sheet at a steel sheet temperature of a temperature range of at least 300° C. or more by indirect heating, making an atmosphere of the zones one comprised of hydrogen H: 1 to 10 vol % and a balance of nitrogen and unavoidable impurities, making a steel sheet peak temperature during heating at the front heating zone 550 to 750° C. and making the dew point less than −25° C., making dew points of the following rear heating zone and soaking zone −30° C. to 0° C., and making a dew point of the cooling zone less than −25° C. | 05-14-2009 |
| 20110097498 | METHOD FOR INHIBITING GROWTH OF TIN WHISKERS - A method for inhibiting growth of tin whiskers is provided. The method includes providing a metal substrate, treating the metal substrate by an annealing process, and forming a tin layer to cover a surface of the metal substrate, wherein the surface of the tin layer has no tin whisker. | 04-28-2011 |
| 427321000 | Zinc or spelter coating (e.g., galvanizing, etc.) | 1 |
| 20100062163 | Method for Continuously Annealing And Preparing Strip of High-Strength Steel For The Purpose Of Hot-Dip Galvanisating It - The present application relates to a method for continuously annealing and preparing a strip of high-strength steel for the purpose of hot-dip coating it in a bath of liquid metal, in which said steel strip is treated in at least two sections, comprising in succession, when considering the direction of advance of the strip: a section called the heating and holding section, in which the strip is heated and then held at a given annealing temperature in an oxidizing atmosphere; and a section called the cooling and transfer section, in which the annealed strip at least is cooled and undergoes complete reduction, in a reducing atmosphere, of the iron oxide present in the oxide layer formed in the previous section, in such a way that the oxidizing atmosphere is separated from the reducing atmosphere, a controlled oxygen content is maintained in the heating and holding section between 50 and 1000 ppm, and a controlled hydrogen content is maintained in the cooling and transfer section at a value of less than 4% and preferably less than 0.5%. | 03-11-2010 |
