| Patents for C21D 9 - Heat treatment, e.g. annealing, hardening, quenching, tempering, adapted for particular articles; Furnaces therefor (30,082) |
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| 03/05/1992 | WO1992003580A1 Method of hardening corrugating rolls |
| 03/04/1992 | EP0472940A1 Continuous annealing line having carburising/nitriding furnace |
| 02/26/1992 | EP0471679A1 Avoiding lead drag-out during patenting. |
| 02/26/1992 | CN1058992A Heat treatment of grinding ball |
| 02/26/1992 | CN1015644B Method of friction-welding joint deformation hot treatment and means thereof |
| 02/25/1992 | US5091264 Support strip, tool steel overcoating |
| 02/25/1992 | US5090161 Method of producing curved-toothed bevel gear |
| 02/20/1992 | WO1992003026A1 Apparatus and method of induction-hardening machine components with precise power output control |
| 02/20/1992 | WO1992002773A1 Rotary heat-treatment apparatus |
| 02/20/1992 | WO1992002645A1 System for continuously cooling metal strip |
| 02/20/1992 | WO1992002326A1 Process for producing annular part |
| 02/18/1992 | US5089059 Method and device for the heat treatment of metal straps |
| 02/18/1992 | US5089058 Method and apparatus for high frequency heat-treatment of long continuous metal blanks |
| 02/18/1992 | CA1296071C Method and apparatus for joining together the ends of a metallic band by resistance inert gas welding |
| 02/13/1992 | DE4025022A1 Annealing non-ferrous metal strip in floating strip oven - where thicker strips of metal are supported in denser inert atmos. |
| 02/12/1992 | CN1058556A Method for connecting point components made of casting high-manganese steel or manganese steel rail with carbon steel rail |
| 02/11/1992 | US5087342 Continuous steel strand electrolytic processing |
| 02/11/1992 | US5086826 Apparatus for the after-cooling and coiling of cast metal strips |
| 02/11/1992 | CA1295479C2 Heat retaining means |
| 02/05/1992 | EP0469803A1 Water-cooled rolls |
| 02/05/1992 | EP0469560A1 High-strength, damage-resistant rail |
| 02/04/1992 | US5085411 Apparatus for processing grain-oriented electrical steel strip |
| 02/04/1992 | CA1295376C Induction heating apparatus |
| 01/29/1992 | EP0468716A2 Insulating heat retention apparatus |
| 01/29/1992 | EP0467898A1 Vacuum furnace. |
| 01/29/1992 | CN1058237A Nodular cast iron cam shaft and its making method |
| 01/28/1992 | US5084113 Quench hardening a valve of heat resistant martensite steel wi th a facing |
| 01/28/1992 | US5084108 Forming a ring shaped circle, annealing, heat treatment to inc rease yield strength and cooling |
| 01/28/1992 | US5083374 Thermally prestressed cylindrical structure and method of making same |
| 01/27/1992 | CA2047872A1 Insulating heat retention system and method |
| 01/22/1992 | EP0467881A1 Process for joining cast manganese Hadfield steel switches, respectively manganese steel rails to a carbon steel rail |
| 01/22/1992 | EP0467793A1 Machine for the thermo-mechanical treatment of shape memory alloy elements |
| 01/22/1992 | EP0467749A1 Method of hot dip aluminium coating of a ferritic stainless steel strip |
| 01/22/1992 | CN2093848U Ribbed longitudinal water tube of heating furnace |
| 01/21/1992 | US5081760 Work roll for metal rolling |
| 01/21/1992 | CA2047071A1 Thermo-mechanical processing machine for shape-memory alloy components |
| 01/16/1992 | DE4022171A1 Joint end with external bearing ring and integral shaft - has e.g. borehole where ring joins shaft to ensure uniform hardness in achieved during quenching |
| 01/14/1992 | US5079937 Controllable conveyor arrangement for cooling rolled wire |
| 01/14/1992 | CA1294126C Reheating furnace with rotating-flame burners for slabs and billets |
| 01/08/1992 | EP0464890A1 Cooling system for cooling a moving metal strip |
| 01/07/1992 | US5078809 Method for producing cold-rolled steel sheet |
| 12/31/1991 | US5075968 Hardening steel by heat or nitriding; wear resistance |
| 12/31/1991 | US5075953 Method of and apparatus for storing products from continuous casting lines prior to rolling |
| 12/28/1991 | WO1992000393A1 Method of producing ultrafine high-strength, high-ductility steel wire |
| 12/27/1991 | EP0462783A2 Process and apparatus for producing thin-webbed H-beam steel |
| 12/27/1991 | EP0462779A2 Method of making steel useful in springs |
| 12/27/1991 | EP0462397A1 Apparatus for the heat galvanising of small steel or cast iron articles |
| 12/27/1991 | EP0462380A2 Method of producing high-strength cold-rolled steel sheet suitable for working |
| 12/25/1991 | CN2091404U Coal annealing furnace |
| 12/24/1991 | US5074926 Ductility |
| 12/24/1991 | US5074924 Process for producing galvanized, non-aging cold rolled steel sheets having good formability in a continuous galvanizing line |
| 12/24/1991 | CA1293487C High temperature fan plug apparatus |
| 12/18/1991 | EP0461734A1 Method for improving the hydrogen-induced stress corrosion cracking resistance of steel articles |
| 12/18/1991 | EP0461652A1 Flat spring hose clamp and manufacture of same |
| 12/17/1991 | US5073212 Method of surface hardening of turbine blades and the like with high energy thermal pulses, and resulting product |
| 12/17/1991 | US5073208 Bending tube, stress relieving |
| 12/12/1991 | DE4107097A1 Closure device for heat treatment appts. |
| 12/11/1991 | EP0460484A2 Closure device for a heat treatment installation |
| 12/11/1991 | EP0460211A1 Production of anticorrosive and antiwearing alloy |
| 12/10/1991 | US5072092 Excimer laser treatment of engine bearing surfaces such as cylinders |
| 12/10/1991 | US5071672 Girth weld heating and coating method |
| 12/10/1991 | US5070587 Roll for use in heat treating furnace and method of producing the same |
| 12/04/1991 | CN2090034U Top chamber mitis annealing furnace |
| 12/04/1991 | CN1014998B Micro-energy soaking technology for steel ingot |
| 12/04/1991 | CN1014997B Thermal treating of metal wires |
| 12/04/1991 | CN1014994B Apparatus for preheating and/or annealling metallic continuous casting billet, especially for wire with larger cross-section |
| 12/03/1991 | US5069428 Method and apparatus of continuous dynamic joule heating to improve magnetic properties and to avoid annealing embrittlement of ferro-magnetic amorphous alloys |
| 12/03/1991 | US5068963 Piston rings |
| 11/27/1991 | CN1014908B Method of manufacturing pipe and drilling rod unit for petroleum and natural gas industry |
| 11/21/1991 | EP0457142A2 Device for positioning and coiling up cast metal strips |
| 11/20/1991 | CA2042876A1 Apparatus for hot metalizing small steel or cast-iron parts |
| 11/19/1991 | US5065811 Apparatus for the manufacture of hot rolled steel strip |
| 11/13/1991 | CN2088555U Transformerless fluid-bed furnace |
| 11/12/1991 | US5065009 Method for detecting roller breakdowns in roller hearth kiln systems |
| 11/12/1991 | US5064173 Process and device for the annealing treatment of metal strips |
| 11/06/1991 | EP0455346A1 Production method for a vehicular endless track bushing |
| 11/06/1991 | CN2088201U Clamp device for use in explosive combustion chamber of thermodynamic chip-removing machine |
| 11/06/1991 | CN1055892A Method and apparatus for inhibiting stress corrosion cracking |
| 11/06/1991 | CN1014616B Method and equipment for coating of coil and stsip |
| 11/06/1991 | CN1014615B Technology of surface hardening treatment by laser and equipment thereof |
| 10/30/1991 | EP0453735A1 Apparatus for internal induction heating of cylinder liners of combustion engines for hardening said liners |
| 10/30/1991 | EP0453566A1 Steel material cooling control method |
| 10/29/1991 | US5060496 Heating, bending in nitrogen atmosphere doubles service life |
| 10/29/1991 | CA1291332C Rotary hearth multi-chamber, multi-purpose furnace system |
| 10/23/1991 | EP0453432A1 A method of forming a zinc-aluminium coating on a steel strip |
| 10/23/1991 | EP0453321A1 Method for descaling hot-rolled stainless steel strip |
| 10/23/1991 | EP0452718A1 Annealing basket for the heat treatment of a filling charge |
| 10/23/1991 | EP0452582A1 Method and apparatus for inhibiting stress corrosion cracking |
| 10/23/1991 | CN1055496A Stocking device for stock of metallurgical products such as thin slab |
| 10/22/1991 | US5058408 Method for partially annealing the sidewall of a container |
| 10/21/1991 | WO1991016461A1 Method for producing steel wires for the manufacture of flexible ducts, steel wires thereby obtained and flexible ducts reinforced therewith |
| 10/20/1991 | CA2015020A1 Method and apparatus for inhibiting stress corrosion cracking |
| 10/17/1991 | WO1991015935A1 Method and device for surface hardening of rotation symmetrical parts through inductive heating by means of at least two different frequencies |
| 10/17/1991 | WO1991015605A1 Method and apparatus for making card clothing |
| 10/17/1991 | DE4011825A1 Web materials processing roller induction heater - has induction loop with variable length to give different heating zones |
| 10/17/1991 | DE4011612A1 Verfahren und einrichtung zur oberflaechenhaertung rotationssymmetrischer teile durch induktive erwaermung mit hilfe wenigstens zweier unterschiedlicher frequenzen Method and device for surface rotationally symmetrical parts by inductive heating with the help of at least two different frequencies |
| 10/16/1991 | CN2086748U Heating unit for blank of spring |
| 10/16/1991 | CN2086747U Electric furnace for heat treatment |
| 10/15/1991 | US5057164 In controlled atmosphere |
| 10/15/1991 | CA1290565C High strength high toughness welding for steam turbine rotor repair |