| Patents for C21D 9 - Heat treatment, e.g. annealing, hardening, quenching, tempering, adapted for particular articles; Furnaces therefor (30,082) |
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| 07/09/2008 | CN101215623A Surface seasoning treatment method for increasing timang cutting processability |
| 07/09/2008 | CN101215621A Heat treatment technique for increasing elasticity modulus by high-strength pumping rod |
| 07/09/2008 | CN101214496A Method of manufacturing metal composite plate for cutting tool |
| 07/09/2008 | CN101214494A Technique for rolling figured steel for magnetic suspension train rail |
| 07/09/2008 | CN100400909C Rolling bearing for belt type non-stage transmission |
| 07/09/2008 | CN100400902C Functional pointed screw with local hardening and its making method |
| 07/09/2008 | CN100400679C High strength seamless steel pipe and its manufacturing method |
| 07/08/2008 | CA2343340C Process for producing a piece with very high-level mechanical characteristics, formed by drawing, from a strip of laminated steel plate, hot rolled and coated |
| 07/08/2008 | CA2308641C Hearth rolls for heating furnace and soaking furnace of vertical heat treating furnace and vertical heat treating furnace including hearth rolls |
| 07/03/2008 | WO2008077364A1 Method and device for welding sheet metal having a preheat and/or reheating device |
| 07/03/2008 | US20080160335 Rotationally Symmetrical Hollow Body Made of a Deformable Permanently Magnetic Alloy and its Use and Production Process |
| 07/03/2008 | DE19959608B4 Vorrichtung zur Laserbehandlung von zylindrischen Innenflächen, vorzugsweise von Zylinderlaufflächen für Verbrennungsmotoren Device for laser treatment of the cylindrical inner surfaces, preferably cylinder surfaces for internal combustion engines |
| 07/03/2008 | DE112006001926T5 Runden und Geraderichten von zylindrischen Teilen mittels Laser Rounds and straightening of cylindrical parts by laser |
| 07/02/2008 | EP1939309A1 Steel for high-speed cold working and method for production thereof, and part formed by high-speed cold working and method for production thereof |
| 07/02/2008 | EP1937854A1 Bake-hardenable cold rolled steel sheet with superior strength, galvannealed steel sheet using the cold rolled steel sheet and method for manufacturing the cold rolled steel sheet |
| 07/02/2008 | EP1937853A1 Bake-hardenable cold rolled steel sheet with superior strength and aging resistance, gal- vannealed steel sheet using the cold rolled steel sheet and method for manufacturing the cold rolled steel sheet |
| 07/02/2008 | EP1937430A1 Strand guide reel |
| 07/02/2008 | CN201080488Y Cold rolling steel belt continuous annealing coal-fired tunnel kiln |
| 07/02/2008 | CN101213317A Dead-soft high-carbon hot-rolled steel sheet and process for producing the same |
| 07/02/2008 | CN101210304A Martensite precipitation hardening stainless steel for compressor impeller and preparation method thereof |
| 07/02/2008 | CN101210298A Steel for high-speed cold working and method for production thereof, and high-speed cold working part and method for production thereof |
| 07/02/2008 | CN101210279A Technique for producing HRB400 stage reinforcing steel bar |
| 07/02/2008 | CN101210278A Heat treatment deformation-proof method for compressor sliding pin |
| 07/02/2008 | CN101209524A Method of preparing copper or copper alloy tube |
| 07/02/2008 | CN101209508A Welding process of low temperature steel welding body case |
| 07/02/2008 | CN101209457A Method for calendering pure copper foil |
| 07/02/2008 | CN101209456A High-strength medium plate production process |
| 07/02/2008 | CN100398860C Roller bearing with steel plate race |
| 07/02/2008 | CN100398856C Rolling bearing filled with balls and ball cam follower for engine |
| 07/02/2008 | CN100398674C Method of implementing on line softening annealing of medium, high carbon steel wire using high energy electric pulse |
| 07/02/2008 | CN100398672C Austempered cast iron article and a method of making the same |
| 07/01/2008 | US7393422 Method for producing high carbon steel wire rod superior in wire-drawability |
| 06/26/2008 | WO2008076067A1 Method for manufacturing at least part of a device for an earthmoving or materials-handling machine using austempered ductile iron |
| 06/26/2008 | WO2008075444A1 Cold-rolled steel sheet and process for producing the same |
| 06/26/2008 | WO2008043617A3 Method for heat treatment |
| 06/26/2008 | WO2008006346A3 Method for production of a sheet metal semi-finished product suitable for press hardening |
| 06/26/2008 | US20080149229 a steel containing at least carbon of 0.4 to 1.5 wt % is quenched at a surface layer of the steel through a deeper portion under the surface layer to form two or more kinds of quench hardened layers, in which one two quench hardened layers has a structure in which cementite are dispersed in 2% or more |
| 06/26/2008 | DE202008002660U1 Vorrichtung zur Wärmebehandlung eines Rohrkörpers für ein Förderrohr An apparatus for heat treating a tubular body for a conveyor tube |
| 06/25/2008 | EP1936000A1 Method of continuous annealing/hot-dipping of steel sheet containing silicon and apparatus for continuous annealing/hot-dipping |
| 06/25/2008 | EP1935995A1 Ballistic protection plate of titanium with layered properties |
| 06/25/2008 | EP1934012A1 Method for producing a weld on a wall of an article by partially melting the material of the welding bead and/or of the material of the adjoining walls |
| 06/25/2008 | CN201077857Y Band steel continuously quench tempering apparatus |
| 06/25/2008 | CN201077856Y Band steel butt-jointed seam shape changing heat handler |
| 06/25/2008 | CN201077855Y Quenching cramping apparatus of hollow antiswary bar |
| 06/25/2008 | CN201077854Y Heat treating discharge cooling down material casing |
| 06/25/2008 | CN201077852Y Steel tube automatic quenching machine tool |
| 06/25/2008 | CN201077851Y Telescopic type plane quenching induction apparatus |
| 06/25/2008 | CN101208442A High-carbon hot-rolled steel sheet and process for producing the same |
| 06/25/2008 | CN101208441A Cold-rolled high-carbon steel plate and process for manufacturing method therefor |
| 06/25/2008 | CN101208440A Steel wire rod excellent in mechanical de-scaling property, and producing method therefor |
| 06/25/2008 | CN101205594A X80 steel made pipe fittings and manufacture technique thereof |
| 06/25/2008 | CN101205590A Annealing method for high-speed steel cold-drawing wire products |
| 06/25/2008 | CN101205569A Spline end protecting equipment for semi-minor axis quenching |
| 06/25/2008 | CN101204775A Double metal material cold covering manufacturing method of thickness more than 2.5mm |
| 06/25/2008 | CN101204767A Process of using laser welding clot technology repair gear axis cervical |
| 06/25/2008 | CN101204716A Method of rolled high niobium pipeline steel |
| 06/25/2008 | CN100397021C Method of improving the temperature profile of a furnace |
| 06/25/2008 | CN100396810C Weldable steel building component and method for making same |
| 06/25/2008 | CN100396802C Repairing method for mechanical machine-lathed compression spring |
| 06/25/2008 | CN100396800C Quenching agent and method for stub axle |
| 06/19/2008 | WO2008072665A1 Method for producing mold for glass molding |
| 06/19/2008 | WO2008072664A1 Method for producing mold for glass molding |
| 06/19/2008 | WO2008072645A1 Member excelling in damping capacity, process for producing the same and steel sheet employed as member excelling in damping capacity |
| 06/19/2008 | WO2008072600A1 High-strength steel sheet |
| 06/19/2008 | US20080145690 Gear material for an enhanced rotorcraft drive system |
| 06/19/2008 | US20080142123 Ferritic stainless steel casting and sheet and method for producing the same |
| 06/18/2008 | EP1932933A1 Dead-soft high-carbon hot-rolled steel sheet and process for producing the same |
| 06/18/2008 | EP1932932A1 Cold-rolled steel sheet excellent in coating curability in baking and cold slow-aging property and process for producing the same |
| 06/18/2008 | CN201074240Y Roller dual-frequency quenching apparatus |
| 06/18/2008 | CN101200790A Oil-gas transportation large-scale high-pressure pipe fittings steel as well as pipes, pipe fittings and welding materials produced thereby |
| 06/18/2008 | CN101200789A Low-alloy bainite ductile iron abrading-ball |
| 06/18/2008 | CN101200775A High-temperature self-lubricating material pad for ingot heating furnace |
| 06/18/2008 | CN101200774A Low-alloy bainite ductile iron oil quenching isothermal tempering heat treatment process |
| 06/18/2008 | CN101200035A Processing method of end face open asymmetric width positioning slot extra thin wall bearing ring chamfer |
| 06/18/2008 | CN100395370C Memory alloy fish bolt fastener material for railway and preparation method thereof |
| 06/18/2008 | CN100395366C Bainite steel for railroad carriage wheel |
| 06/18/2008 | CN100395365C Fe-cr-si based non-oriented electromagnetic steel sheet and process for producing the same |
| 06/18/2008 | CN100395353C Inducing quenching and tempering process of automobile knuckle |
| 06/18/2008 | CN100395077C Method for preparing high conductive, high temperature electronic frame material |
| 06/18/2008 | CN100395068C High pressure vacuum electronic beam welding method for stator ring of air compressor of gas steam turine |
| 06/17/2008 | US7387694 Method of making a hardened steel part, especially a roll load-bearing steel part |
| 06/17/2008 | US7387693 Method of altering the resistivity of a metal wire |
| 06/12/2008 | WO2008069335A1 Weld steel pipe with excellent low-temperature toughness for high-strength thick-walled line pipe and process for producing the same |
| 06/12/2008 | WO2008069289A1 Weld steel pipe with excellent low-temperature toughness for high-strength line pipe and process for producing the same |
| 06/12/2008 | WO2008068968A1 Method for production of soft nitriding steel product |
| 06/12/2008 | WO2007018048A8 Oil-tempered wire and process for producing the same |
| 06/12/2008 | US20080135140 High Strength Formed Article Comprising Hyperfine Grain Structure Steel and Manufacturing Method of the Same |
| 06/12/2008 | DE102007004030B3 Hardening method for vehicle axles comprises heating them to austenite temperature using contact electrodes, after which they are quenched, ends of axle being cooled to keep them below austenite temperature |
| 06/12/2008 | DE102006057874A1 Hohlrolle eines Zylinderrollenlagers, Verfahren zur Herstellung einer solchen Hohlrolle Hollow roller a cylindrical roller bearing, method of making such a hollow roller |
| 06/12/2008 | DE10026372B4 Verfahren zum Laserbearbeiten einer Innenfläche einer zylinderförmigen Bohrung A method for laser machining an inner surface of a cylindrical bore |
| 06/11/2008 | EP1930461A1 Ferritic stainless steel for automobile exhaust gas passage components and welded steel pipe |
| 06/11/2008 | EP1930458A1 Oil-tempered wire and process for producing the same |
| 06/11/2008 | EP1225993B1 Heat treatment and sand removal for castings |
| 06/11/2008 | CN201071385Y Insertion type slide track of steel pulling slab heating furnace |
| 06/11/2008 | CN201071384Y Hydraulically powered crank rocker dual stepping beam type heat treatment furnace |
| 06/11/2008 | CN201071383Y Sealing curtain |
| 06/11/2008 | CN201071382Y Sliding bar type iron shot position testing apparatus |
| 06/11/2008 | CN201071381Y Vertical rotation folding thermal treatment industry furnace |
| 06/11/2008 | CN201071380Y Vertical segmenting thermal treatment industry furnace |
| 06/11/2008 | CN101195893A Isothermal hardening bainite thin wall cylinder cover |