| Patents for C21D 9 - Heat treatment, e.g. annealing, hardening, quenching, tempering, adapted for particular articles; Furnaces therefor (30,082) |
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| 09/13/1989 | CN2044257U Heat treatment machine for rail bar |
| 09/13/1989 | CN1035528A Process and apparatus for heat treatment of carbon wire-steel into fine pearlitic structure |
| 09/08/1989 | WO1989008152A1 Process for producing nonoriented electric steel sheet having excellent magnetic properties in lowly magnetic field |
| 09/08/1989 | WO1989008140A1 Case-hardened plate armor |
| 09/08/1989 | WO1989007993A1 Pressure pipe |
| 09/06/1989 | EP0331498A2 Method for providing heat resistant domain refinement of electrical steels to reduce core loss |
| 09/06/1989 | EP0331497A2 Method for improving core loss properties of electrical sheet product |
| 09/05/1989 | US4863145 Cooling wheel for annealing wire |
| 09/05/1989 | CA1259050A1 Method and apparatus for the continuous annealing of steel strips |
| 09/05/1989 | CA1259014A1 Method and apparatus for heat treatment of steel rods |
| 09/05/1989 | CA1258971A1 Method and apparatus for continuously annealing metal strip and hearth roll therefor |
| 08/31/1989 | DE3805543A1 Device for the treatment of continuously moved advancing material |
| 08/31/1989 | DE3805473A1 Process and equipment for hardening wire rings |
| 08/30/1989 | EP0330293A2 Heat retaining means |
| 08/30/1989 | CN1035138A Isothermal quenching method for preparation of grinding ball made of spheroidal cast iron |
| 08/29/1989 | US4861394 Controlled slow cooling of steel tubulars |
| 08/29/1989 | US4861000 Installation having several elements for heat treatments |
| 08/29/1989 | US4860999 Device for heat-treating, in particular annealing, a continuously advanced metal wire |
| 08/24/1989 | DE3804654A1 Process for producing rolling bearing elements from a microalloyed steel |
| 08/24/1989 | DE3804273A1 Roller mill and method for coating a roller |
| 08/23/1989 | EP0329611A1 Process for continuously coating a filamentary steel article by immersing the article in a bath of the molten coating metal |
| 08/23/1989 | EP0329604A1 Process and device for hardening similar elements fixed to a common support in a regularly spaced manner |
| 08/23/1989 | EP0329220A1 Non-ageing low-alloy hot-rolled strip-form formable steel |
| 08/23/1989 | EP0328891A1 Use of welding materials and process for repairing welded joints |
| 08/23/1989 | EP0328603A1 Control of straightness in scanning induction hardening of steel |
| 08/22/1989 | US4859251 Carbon monoxide, carbon dioxide, steam mixture; for color television picture tubes |
| 08/22/1989 | US4858893 Bell furnance and hardening vat arrangement |
| 08/22/1989 | CA1258571A1 Method and use of steel for making steel tubes or pipes of increased acidic gas resistance |
| 08/17/1989 | DE3903856A1 Verfahren zum herstellen eines legierten, verzinkten, titanberuhigten stahlblechs mit ausgezeichneter tiefzieheigenschaft A method of manufacturing an alloy, galvanized steel sheet titanium killed with excellent deep drawing property |
| 08/17/1989 | DE3803687A1 Gebaute nockenwelle Built camshaft |
| 08/16/1989 | EP0328505A1 Device for cooling metal rod or wire |
| 08/16/1989 | CN2042852U Slop gravity atuo-downslide discharging device for steel rolling heating furnace |
| 08/16/1989 | CN2042851U Horizontal auto winding-unwinding unit by collectitive driving |
| 08/15/1989 | US4857694 Method and apparatus for automatic vapor cooling when shape melting a component |
| 08/15/1989 | US4857687 Induction apparatus for heating edge portion of billet |
| 08/15/1989 | US4857119 Carbiding, nitriding surface treatment |
| 08/15/1989 | US4857117 Method of manufacturing a cold-rolled steel sheet having a good deep drawability |
| 08/10/1989 | WO1989007158A1 Cold-rolled sheet or strip and process for manufacturing them |
| 08/09/1989 | CN1034583A Heat treatment and its device for producing high strength steel rail |
| 08/09/1989 | CN1034497A Apparatus for producing water curtain |
| 08/08/1989 | US4855556 Method and apparatus for hardening gears and similar workpieces |
| 08/08/1989 | US4855551 Method and apparatus for hardening gears |
| 08/08/1989 | US4854863 Convective heat transfer within an industrial heat treating furnace |
| 08/08/1989 | US4854860 Convective heat transfer within an industrial heat treating furnace |
| 08/08/1989 | US4854025 Metallic shaft bonded to ceramic |
| 08/02/1989 | EP0326005A1 Methods and device for heat treating carbon steel wires in order to obtain a fine perlitic structure |
| 07/26/1989 | CN1004881B Process and apparatus for heat treatment of rail |
| 07/25/1989 | US4851637 Method for processing large cast iron dies, particularly for vehicle sheet-metal pressing, and the apparatus for its implementation |
| 07/25/1989 | US4851052 Cooling a cast slab to produce inclusion dispersions; steels with acicular-ferrite texture |
| 07/24/1989 | EP0309563A4 Electric induction heat treating furnace. |
| 07/20/1989 | DE3826091A1 High strength steel for concrete reinforcement or drawing - has high strength martensitic layer between case and core |
| 07/19/1989 | EP0324721A2 Method for induction-hardening machine components |
| 07/19/1989 | EP0324183A1 One piece support with several levels for the thermal treatment of shafts or axles |
| 07/18/1989 | US4848753 Apparatus for the inner and outer quenching of tubular pieces |
| 07/18/1989 | US4848752 Apparatus for the inside and outside quenching of tubular pieces |
| 07/13/1989 | WO1989006470A1 Adaptive method and device for coding and decoding a series of images by transformation |
| 07/12/1989 | CN2041026U Three-way type multipurpose furnace with drip atmosphere |
| 07/12/1989 | CN1033842A Method for bringing a plurality of steel slabs to rolling temperature in a furnace |
| 07/11/1989 | US4846939 Pickling with acid |
| 07/11/1989 | US4846903 Method for producing a grain oriented electrical steel sheet |
| 07/11/1989 | US4846717 Continuous method and apparatus for the thermal treatment of metallic workpieces |
| 07/11/1989 | US4846675 Annealing furnace |
| 07/11/1989 | US4846448 Apparatus for improvement of iron loss of electromagnetic steel sheet or amorphous material |
| 07/11/1989 | CA1257183A1 Method and apparatus of cooling steel strip in continuous heat treating line |
| 07/05/1989 | EP0323362A1 Adaptive method of transform coding and decoding a sequence of pictures, and devices for carrying out this method |
| 07/05/1989 | EP0322758A1 Process and device for the heat-treatment of the welding joints of longitudinally welded metal tubes |
| 07/05/1989 | CN1004708B Making-up method of heating salt bath for quenching hand saw blade |
| 07/04/1989 | US4845328 Apparatus for and method of induction-hardening machine components |
| 07/04/1989 | US4844752 Process for making internally hardened tubes |
| 07/04/1989 | US4844427 Quenching apparatus |
| 06/28/1989 | EP0321733A1 Production of hot-rolled strip from a continuously cast material |
| 06/28/1989 | EP0130221B1 Process for producing corrosion-resistant alloy steel |
| 06/28/1989 | CN2040241U Continuous far-infrared tempering stove |
| 06/28/1989 | CN2040103U Electrically-heated annealing pipe used for enameling machine |
| 06/27/1989 | US4842818 Coil springs for automobiles or railroad cars |
| 06/27/1989 | US4842655 Heating to critical temperature, cooling surfaces to result in plastic flow |
| 06/27/1989 | CA1256355A1 Method and apparatus for cooling steel strip |
| 06/20/1989 | US4840686 Heat treating carbon or alloty steel with improved waer and br eak resistance for rotating grinding mills |
| 06/20/1989 | US4840560 Heating stock in a heating chamber |
| 06/20/1989 | US4840559 Seal arrangement for high temperature furnace applications |
| 06/20/1989 | CA1256004A1 Method for pearlitic rail steels |
| 06/20/1989 | CA1255897A1 Continuously treating line for steel bands having a heating furnace by directly flaming |
| 06/15/1989 | WO1989005431A1 Long life cover for heat chamber |
| 06/15/1989 | DE3740948A1 Device for heating bars or the like |
| 06/14/1989 | EP0319808A1 Continuous-casting plant for strip |
| 06/14/1989 | EP0319590A1 HIGH-STRENGTH, COLD-ROLLED STEEL SHEET HAVING HIGH r VALUE AND PROCESS FOR ITS PRODUCTION |
| 06/13/1989 | US4838961 Of steel alloy containing silicon, manganese, chromium molybdenum, vanadium; hardening by quenching |
| 06/13/1989 | US4838955 Thermal aftertreatment with free nitrogen |
| 06/13/1989 | US4838526 Apparatus of cooling steel strip |
| 06/13/1989 | CA1255759A1 Electromagnetic-induction heater |
| 06/07/1989 | EP0319511A1 Bimetallic strip for metal saw blades |
| 06/06/1989 | US4836866 Quenching stretched heated tensioned metal bars |
| 06/06/1989 | US4836864 Method of gas carburizing and hardening |
| 06/06/1989 | US4836774 Method and apparatus for heating a strip of metallic material in a continuous annealing furnace |
| 06/01/1989 | DE3839154A1 Bohrmeissel A drill bit |
| 05/31/1989 | EP0318077A1 Method for bringing a plurality of steel slabs to rolling temperature in a furnace |
| 05/31/1989 | EP0317830A2 A method of bending metal objects |
| 05/31/1989 | EP0215830B1 Plant for cooling by spraying means |
| 05/31/1989 | CN2038499U Metalic tube type heating quenching furnace |
| 05/30/1989 | US4834345 Process and apparatus for direct softening heat treatment of rolled wire rods |