| Patents for C21D 1 - General methods or devices for heat treatment, e.g. annealing, hardening, quenching, tempering (27,435) |
|---|
| 05/25/1994 | CN1024691C Low-alloy steel to resist dew point corrosion of sulphuric acid |
| 05/24/1994 | US5314248 Laser device for simultaneous industrial processing and monitoring of temperature |
| 05/24/1994 | US5314170 Steel heating furnace |
| 05/24/1994 | US5314169 Method and apparatus for heat treating elongate metallic products |
| 05/24/1994 | US5313815 Apparatus and method for producing shaped metal parts using continuous heating |
| 05/19/1994 | DE4323167C1 Producing steel hollow bodies by rolling - combined with austenitic heat treatment |
| 05/19/1994 | DE4238240A1 Annealing furnace for temporarily stacked material - has chicane device which can be raised or lowered into operating position and has temp. resistant surface covering inner chamber and linked to work table |
| 05/18/1994 | EP0597560A1 Device for the cooling of profils |
| 05/18/1994 | CN1024564C Treatment for inhibiting irradiation induced stress corrosion cracking in austenitic stainless steel |
| 05/17/1994 | US5313042 Laser hardening device |
| 05/17/1994 | US5311931 Mist supercooling of a heated surface |
| 05/17/1994 | CA1329489C Cooling chamber for the convection cooling of two-dimensionally arranged material |
| 05/11/1994 | WO1994010244A1 Coating an object of interest |
| 05/11/1994 | EP0596121A1 Process for forming passive film on stainless steel, and stainless steel and gas- and liquid-contacting part |
| 05/11/1994 | EP0504352B1 Process and device for manufacturing a texturing roller |
| 05/11/1994 | DE4337374A1 Removal of sludge from molten salt quenching bath liq. - with a sludge receptacle provided with ceramic honeycomb filters |
| 05/11/1994 | DE4237484A1 Surface remelting esp. of camshafts or crankshafts - by controlled preheating, esp. laser remelting and controlled cooling |
| 05/10/1994 | US5310975 Method and apparatus for the continuous field annealing of amorphous metal transformer cores |
| 05/10/1994 | US5309631 Roll manufacturing method |
| 05/10/1994 | CA1329320C Skid rail |
| 05/05/1994 | DE4236801A1 Case-hardening of steel parts using hydrogen gas reaction - where a vacuum oven is insulated with readily available mineral fibres and is heated by radiation tubes |
| 05/04/1994 | EP0595671A1 Dry reflow process and apparatus |
| 04/28/1994 | WO1994009171A1 Heavy-duty solid wheels and tyres for rail locomotives and trucks |
| 04/28/1994 | WO1994009164A1 Method for the thermal treatment of metal products |
| 04/28/1994 | DE4233916A1 Industrial heat treatment furnace - returns portion of recirculating gas into treatment zone through jets across main gas flow |
| 04/26/1994 | US5306897 Heat treatment method and apparatus for turbine blades using flexible heater sleeve |
| 04/26/1994 | US5306361 Method for improving service life of rail welds by aluminothermic heat treatment |
| 04/26/1994 | US5306360 Process for improving the fatigue crack growth resistance by laser beam |
| 04/26/1994 | US5306359 Method and apparatus for heat treating |
| 04/26/1994 | US5306354 Method of blackening treating a stainless steel strip surface |
| 04/19/1994 | US5303904 Method and apparatus for controlling heat transfer between a container and workpieces |
| 04/14/1994 | WO1994008190A1 Method and apparatus for improving the performance of a heating furnace for metal slabs |
| 04/14/1994 | WO1994008065A1 Method of forming oxide passivation film having chromium oxide layer on the surface thereof, and stainless steel having excellent corrosion resistance |
| 04/14/1994 | DE4234285A1 Verfahren zur Wärmebehandlung von metallischem Gut A method of heat treatment of metallic materials |
| 04/14/1994 | DE4234192A1 Hoch belastbare Vollräder und Radreifen für Schienen-Triebfahrzeuge und Wagen Heavy-duty, solid wheels and tires for rail locomotives and wagons |
| 04/13/1994 | EP0591151A1 A steel bar and billet heating system located upstream of shears for further processing. |
| 04/13/1994 | EP0541630B1 Device for cooling extruded profiles |
| 04/13/1994 | EP0506768B1 Steel wire having a structure of the cold-drawn lower bainite type; method for producing such wire |
| 04/13/1994 | CN1085258A Method for heat treatment of rail |
| 04/13/1994 | CN1085257A Technique for heat treatment of V3N super-hardness high-speed steel |
| 04/12/1994 | US5302217 Cyclic heat treatment for controlling grain size of superalloy castings |
| 04/12/1994 | US5302216 Method for producing by continuous heat treatments oil-tempered steel wires for springs having high strength and high toughness |
| 04/12/1994 | US5302215 Method and apparatus for selectively heating a workpiece subjected to low temperature thermomechanical processing |
| 04/12/1994 | US5302213 Heat treating atmospheres from non-cryogenically generated nitrogen |
| 04/12/1994 | US5302181 Oxide-dispersion-strengthened heat-resistant chromium-based sintered alloy |
| 04/06/1994 | CN2160454Y Device for recovering quenching cool water |
| 04/06/1994 | CN1024144C Nitriding furnace apparatus |
| 04/05/1994 | US5300265 Air controller consists of a catalytic converter, heat exchanger and absorbers to produce a mixture of exhaust gases having low concentration of oxygen |
| 04/05/1994 | US5299783 Rod cooling apparatus |
| 04/05/1994 | US5299441 Method of making a mandrel comprising a drill section for a self-drilling blind rivet |
| 03/31/1994 | WO1994006943A1 Process for changing the microstructure of metallic rails |
| 03/31/1994 | WO1994006596A1 Method for modifying the local grain structure at the surface of a material by means of high-energy radiation |
| 03/31/1994 | DE4232898A1 Device for measuring thermal conductivity coefft. of quenchants - using capillary tube with fine wires connected to regulating and measuring units |
| 03/30/1994 | EP0589128A1 Leaf spring constraining apparatus |
| 03/30/1994 | CN1084573A Preparing method of water-soluble organic quenching medium |
| 03/29/1994 | US5298090 Atmospheres for heat treating non-ferrous metals and alloys |
| 03/29/1994 | US5298089 Reducing agents with inert gases for alloys |
| 03/24/1994 | DE4333917A1 Increasing the nitrogen@ content of stainless steel surfaces - to improve their wear-resistance and toughness |
| 03/24/1994 | DE4231617A1 Temperature transfer in assembly technology - provides controllable temp transfer over given, spatially defined temp transfer sections |
| 03/24/1994 | DE4231489A1 Mirror with a concave surface for producing an intensity distribution - with a non-spherical mirror surface built up of strips set at an angle to one another |
| 03/23/1994 | EP0588458A1 Method of nitriding austenitic stainless steel |
| 03/23/1994 | EP0587732A1 Apparatus for and method of induction-hardening machine components |
| 03/23/1994 | CN1084226A Method of nitriding austenitic stainless steel products |
| 03/22/1994 | US5295822 Convective heat transfer by cascading jet impingement in a batch coil annealling furnace |
| 03/17/1994 | WO1994005824A1 Structural member and process for producing the same |
| 03/17/1994 | WO1994005441A1 A straightening method |
| 03/16/1994 | CN1083866A Silicate's aqueous solution quench treatment of grinding ball made of nodular cast iron |
| 03/15/1994 | US5294271 Heat treatment for manufacturing spring steel excellent in high-temperature relaxation resistance |
| 03/15/1994 | US5294095 For heat treating a product |
| 03/15/1994 | CA1327815C Monobloc arrangement with tiered platform for heating treatment of shafts and axles |
| 03/09/1994 | EP0586179A1 Forging and a method for its manufacture |
| 03/09/1994 | EP0585843A2 High-formability steel plate with a great potential for strength enhancement by high-density energy treatment |
| 03/09/1994 | EP0585542A1 Inductor |
| 03/08/1994 | US5292384 Cr-W-V bainitic/ferritic steel with improved strength and toughness and method of making |
| 03/03/1994 | WO1994004304A1 Apparatus and method for precision gear finishing by controlled deformation |
| 03/03/1994 | WO1994004297A1 Heat treatment of metal castings and in-furnace sand reclamation |
| 03/03/1994 | DE4312347A1 Heat resistant roller, used in appts. to mfr. steel plates - comprises outer periphery surface made of para-aromatic polyamide fibre |
| 03/02/1994 | CN1083116A Method for low-temp annealing of forgeable cast iron |
| 03/01/1994 | US5290508 Manufacturing process for ring-shaped parts |
| 03/01/1994 | US5290480 Process for producing furnace atmospheres by deoxygenating non-cryogenically generated nitrogen with dissociated ammonia |
| 03/01/1994 | US5290017 Cooling cover for batch coil annealing furnace |
| 02/23/1994 | CN2157193Y Laser quenching machine tool for camshaft of motorcycle |
| 02/22/1994 | US5288342 Solid metal-carbon matrix of metallofullerites and method of forming same |
| 02/16/1994 | CN2156191Y Multi-function quench oil trough |
| 02/10/1994 | DE4225982A1 Verfahren zum kontinuierlichen Glühen von metallischem Gut unter wasserstoffreichem Schutzgas Process for the continuous annealing of metallic material at hydrogen-rich gas protection |
| 02/09/1994 | EP0582180A1 Heat treatment process for wire rods |
| 02/08/1994 | US5284680 Cleaning and rapidly heating to temper the martenite steel; immersion in a bath melt of zinc or zinc alloy to coat; cooling |
| 02/08/1994 | US5284526 Mixing nitrogen containing oxygen with hydrogen over catalyst, mixing with hydrocarbon, heating to convert moisture to carbon monoxide and hydrogen |
| 02/08/1994 | US5284327 Extrusion quenching apparatus and related method |
| 02/03/1994 | WO1994002652A1 Rail thermal treatment process |
| 02/03/1994 | DE4225250A1 Vacuum furnace for excess pressure dissipation used in steel hardening - has sepd. housings for back cooler and turbine for accelerating cooling gas and further housing contg. heating chamber |
| 02/01/1994 | US5283280 Composition and method for coating an object of interest |
| 02/01/1994 | US5282910 Process for heating a metal alloy workpiece |
| 02/01/1994 | US5282906 Martensitic matrix microstructure with dispersed particles of vanadium and niobium carbonitrides and iron carbide; controlled hot roll finishing and cooling; springs |
| 01/26/1994 | CN1081207A Apparatus for continous heat treatment of metalic objects |
| 01/20/1994 | WO1994001589A1 Method and apparatus for controlling heat transfer between a container and workpieces |
| 01/19/1994 | EP0578696A1 Process for remelting metal surfaces by laser. |
| 01/19/1994 | EP0437454B1 Process and device for surface hardening of crack-prone work pieces |
| 01/19/1994 | CN1023569C Prepn. of pumping rod without heat treatment |
| 01/12/1994 | EP0578607A1 Spray apparatus for the cooling of profils |