| Patents for C21D 1 - General methods or devices for heat treatment, e.g. annealing, hardening, quenching, tempering (27,435) |
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| 03/10/2004 | CN1481443A Prodn method for steel plate and equipment therefor |
| 03/10/2004 | CN1141404C Method and apparatus for reducing folds of bands in quick cooling area of heat treatment production line |
| 03/10/2004 | CN1141403C Low-carbon steels with superior mechanical and corrosion properties, and its mfg method |
| 03/09/2004 | US6702980 Annealing apparatus |
| 03/04/2004 | WO2004018715A2 Method and device for the continuous annealing of strip steel and correspondingly produced strip steel |
| 03/04/2004 | US20040040636 Metallic member forming method |
| 03/03/2004 | EP1394279A1 High strength and high ductility steel plate having hyperfine crystal grain structure produced by subjecting ordinary low carbon steel to low strain working and annealing, and method for production thereof |
| 03/03/2004 | EP1392873A1 Method of producing stainless steels having improved corrosion resistance |
| 03/03/2004 | EP1040208B1 Tin-bearing free-machining steel |
| 03/03/2004 | CN1479797A High strength hot rolled steel plate excellent in enlargeability and ductlity and method for production thereof |
| 03/03/2004 | CN1478906A Non-oxidizing decarbon technology of high carbon content steel in heat treatment annealing |
| 03/03/2004 | CN1140758C Means for supporting radiation tubes |
| 03/02/2004 | US6700750 Spin-valve thin film element |
| 03/02/2004 | US6699333 Comprised of at least silicon, chromium, nickel, molybdenum, carbon and iron; allows high tempering temperature; having elevated temperature hardness; preserves core properties |
| 03/02/2004 | CA2131651C Martensitic hot work tool steel die block article and method of manufacture |
| 02/26/2004 | WO2004016815A1 Methods and apparatus for stress relief using multiple energy sources |
| 02/26/2004 | US20040035508 High strength hot rolled steel plate excellent in enlargeability and ductility and method for producing thereof |
| 02/26/2004 | US20040035500 Plates comprising mixtures of austenite, bainite and ferrites having tensile strength and workability, used in automobiles |
| 02/26/2004 | DE10018132B4 Kohlenstoffstahlmaterial und Bearbeitungsverfahren zur Festigkeitssteigerung Carbon steel material and processing method for increasing the strength |
| 02/26/2004 | CA2495656A1 Methods and apparatus for stress relief using multiple energy sources |
| 02/25/2004 | EP1391526A2 Dual phase steel sheet with good bake-hardening properties |
| 02/25/2004 | EP1391525A1 Process and apparatus for blackening components |
| 02/25/2004 | EP1390554A1 Method of quenching alloy sheet to minimize distortion |
| 02/25/2004 | EP1015651B1 Ultra-high strength, weldable, boron-containing steels with superior toughness |
| 02/24/2004 | US6695933 Ultra-high strength cold rolled steel sheet and method for manufacturing the same |
| 02/24/2004 | US6695930 .05-.24 wt% carbon, 15-28 wt% cobalt and 1.5-9.5 wt% nickel, small percentages of chromium, molybdenum, and vanadium; and the balance iron |
| 02/19/2004 | WO2004015160A1 Method for manufacturing stainless steel product by nitrogen absorption treatment and stainless steel product produced by the method |
| 02/19/2004 | WO2004014577A1 Cooling device, manufacturing method, and manufacturing line for hot rolled steel band |
| 02/19/2004 | WO2004002195A3 Induction heating system having eccentric locator |
| 02/19/2004 | WO2003096747A3 Plasma heating apparatus and methods |
| 02/19/2004 | US20040031787 Method and apparatus for induction hardening |
| 02/19/2004 | US20040031542 Applying a constant magnetic field of at least 1 Tesla to a metallic material having residual stresses at a temperature between ten and fifty degrees Celcius; microstructures |
| 02/19/2004 | DE10235131A1 Verfahren und Vorrichtung zum Schwärzen von Bauteilen Method and apparatus for blackening of components |
| 02/18/2004 | EP1389639A2 Steel sheet with excellent bendability |
| 02/18/2004 | CN1138963C Furnace for heating iron products |
| 02/17/2004 | US6693264 Vacuum and gas tight enclosure for induction heating system |
| 02/17/2004 | US6692593 Heat treatment in an evacuated furnace space; before a quenching gas is passed into the furnace space, hydrogen is supplied to the still evacuated furnace space. |
| 02/12/2004 | WO2004013367A2 Plasma-nitriding of maraging steel, shaver cap for an electric shaver, cutting device made out of such steel and an electric shaver |
| 02/12/2004 | US20040026412 Method and device for plasma treatment of moving metal substrates |
| 02/12/2004 | US20040026385 Process for treating with an atmospheric plasma electrically conductive materials and a device therefor |
| 02/12/2004 | US20040025987 Heating, cooling cycles; tensile strength |
| 02/12/2004 | DE20315434U1 Device for hardening workpieces by cooling with oil has flow guiding elements with coolant channels arranged above and below the workpiece to be cooled |
| 02/11/2004 | CN1473945A Locally reinforced heating method and device for hot rolling steel billet before discharging |
| 02/11/2004 | CN1138005C Reinforcing laser treatment for surface of cast steel roll |
| 02/10/2004 | US6690710 High efficiency induction heating and melting systems |
| 02/10/2004 | US6689995 Apparatus and method for healing a workpiece of metal |
| 02/10/2004 | US6689230 Analyzing heat removed from rails, using radiation measuring instruments connected to computer programmes, then immersing in water, such that the transformation during decomposition of crystals into ferrite and/or pearlite is controlled |
| 02/10/2004 | US6689228 Metal apparatus comprising supports, conveyors, heaters, coolers and electronic controllers for heat treatment or hardening rails |
| 02/10/2004 | US6689227 For heat treated metal parts fabricated from steel, alloy steel, aluminum and aluminum alloy; pollution control |
| 02/05/2004 | WO2004011684A1 A method and a skid member for reducing temperature difference in a heating subject and a skid apparatus using them |
| 02/05/2004 | US20040022944 Method and device for blacking components |
| 02/05/2004 | US20040020071 Oil removing device for cleaning pipes that are present in the form of coils |
| 02/05/2004 | DE4431608C5 Verfahren und Vorrichtung zum Wärmebehandeln metallischer Werkstücke Method and apparatus for heat treating metallic work pieces |
| 02/05/2004 | DE10232262A1 Apparatus for hardening annular workpieces comprises a hardening unit which can move in the X- and Y-axis direction using a numerically controlled compound table, and a unit for rotating the workpiece in the peripheral direction |
| 02/04/2004 | EP1386977A1 Ferritic stainless steel strip excellent in freeze of shape formed by working |
| 02/04/2004 | EP1386012A1 Method for enhancing the metallurgical quality of products treated in a furnace |
| 02/04/2004 | EP0995809B1 Steel for oil well pipes with high wet carbon dioxide gas corrosion resistance and high seawater corrosion resistance, and seamless oil well pipe |
| 02/04/2004 | CN2602033Y Energy conservation type austenitic-bainite ball iron heat treatment device |
| 02/03/2004 | US6686061 Steel plate having TiN+CuS precipitates for welded structures, method for manufacturing same and welded structure made therefrom |
| 01/29/2004 | WO2004009856A1 Process for producing oil tempered wire |
| 01/29/2004 | WO2004009855A1 Method and system for processing castings |
| 01/29/2004 | WO2003104501A3 Method and device for patenting steel wires |
| 01/29/2004 | WO2003016582A3 Method for increasing the dynamic stability under load of a toothed structural component |
| 01/29/2004 | US20040016478 Inductive heating process control of continuous cast metallic sheets |
| 01/29/2004 | DE10232432A1 Verfahren und Vorrichtung zum Unterdruckaufkohlen Method and apparatus for Unterdruckaufkohlen |
| 01/29/2004 | DE10228743A1 Verfahren zum Glätten und Polieren von Oberflächen durch Bearbeitung mit energetischer Strahlung Method for smoothing and polishing of surfaces by machining with energy radiation |
| 01/28/2004 | EP1384794A1 Spheroidal cast iron particulary for piston rings and method for its production |
| 01/28/2004 | EP1384391A1 Transverse flux induction heating of conductive strip |
| 01/28/2004 | CN1471800A Atmospheric plasma method for treating electricity conducting materials and device therefor |
| 01/28/2004 | CN1470655A Heat-treatment furnace |
| 01/28/2004 | CN1136328C Pitting-resistant double phase stainless steel alloy having improved machinability |
| 01/27/2004 | US6683281 Means and method for heating |
| 01/27/2004 | US6682612 Method of heat treatment of wire |
| 01/27/2004 | US6682610 Manufacturing method for hollow stabilizer |
| 01/27/2004 | US6682227 Rolling bearing component |
| 01/22/2004 | WO2004007785A1 Quenched and tempered steel wire with superior cold forging characteristics |
| 01/22/2004 | WO2004007779A1 Vacuum carburizing method and device |
| 01/22/2004 | US20040012898 Spin-valve thin-film element and method for manufacturing the same |
| 01/22/2004 | DE10248264B3 Verfahren zum Versiegeln einer porösen Hartstoffschicht auf einem metallischen Werkstück A method for sealing a porous hard material layer on a metallic workpiece |
| 01/21/2004 | EP1382702A1 High-strength steel sheet having excellent workability and production process therefor |
| 01/21/2004 | EP1381702A1 Steel article |
| 01/21/2004 | EP1218562B1 Method for heat treatment of metallic slugs |
| 01/21/2004 | CN1469934A Method and device for annealing tubes |
| 01/21/2004 | CN1468967A Rotatively heating and linking cooling HF quencher |
| 01/15/2004 | WO2004005873A1 Magnetostrictive torque sensor shaft and method for manufacturin the same |
| 01/15/2004 | WO2004005572A1 Surface modified stainless steel |
| 01/15/2004 | US20040009448 Gas-cooled single chamber heat treating furnace, and method for gas cooling in the furnace |
| 01/15/2004 | US20040007801 Method of heat-treating a rack bar and the same |
| 01/15/2004 | US20040007298 High-strength steel sheet having excellent workability and production process therefor |
| 01/15/2004 | US20040007297 Hot-dip galvanized hot-rolled and cold-rolled steel sheets excellent in strain age hardening property |
| 01/15/2004 | US20040007292 Comprises sealed furnace and vibrating diaphragm which vibrates gases within |
| 01/15/2004 | DE10330068A1 Härtungsverfahren und -vorrichtung mit Verwendung von Laserstrahlen Curing method and apparatus with use of laser beams |
| 01/14/2004 | EP1379702A1 Method for making a roll shell of a roll used in the manufacture or further processing of paper and/or board |
| 01/14/2004 | CN1468362A Hot air blow type fluidized bed furnace, rotary type heat treatment furnace, heat treatment device, and heat treatment method |
| 01/14/2004 | CN1467121A Track link production method and track link produced by the same |
| 01/14/2004 | CN1134547C Method for controlling two-phase steel organization |
| 01/13/2004 | US6677560 Apparatus for inductively heating a workpiece |
| 01/13/2004 | US6676774 Hot rolled steel plate and cold rolled steel plate being excellent in strain aging hardening characteristics |
| 01/13/2004 | US6675869 Cooled to transform strip from austenite to ferrite; roller milling; twin roll caster |
| 01/08/2004 | WO2004003241A1 Method for producing seamless steel pipe for inflator of air bag |