| Patents for C21D 1 - General methods or devices for heat treatment, e.g. annealing, hardening, quenching, tempering (27,435) |
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| 01/28/1998 | CN1171307A Method for cooling deformed steel girder |
| 01/28/1998 | CN1171304A Technique for cold rolling finned reinforcing bars higher than 800 megapascals with ordinary carbon steel |
| 01/27/1998 | US5711825 Process for the production of grain oriented magnetic steel sheets having improved remagnetization losses |
| 01/22/1998 | WO1998002592A1 Method and device for temper-hardening flat metal products |
| 01/22/1998 | WO1998002591A1 Process for producing a grain-orientated electrical steel sheet |
| 01/22/1998 | CA2259693A1 Method and device for temper-hardening flat metal products |
| 01/21/1998 | CN1170765A Process for preparing heat treatment atmosphere and method for regulating said process |
| 01/21/1998 | CN1170764A Process for production of steel component |
| 01/20/1998 | US5710405 Noncracking |
| 01/20/1998 | CA2111627C Process for producing furnace atmospheres by deoxygenating noncryogenically generated nitrogen with dissociated ammonia |
| 01/20/1998 | CA2103225C Oxygen removal from partially purified nitrogen |
| 01/15/1998 | DE19653610C1 Apparatus for hardening metal materials |
| 01/13/1998 | US5708678 Method to equalize the temperature in a heating furnace with a controlled-oxidization ambient and heating furnace carrying out the method |
| 01/13/1998 | US5707228 Heat treatment machine having a cooling chamber |
| 01/13/1998 | US5707181 Method of producing an intended breaking point in a tension member for a soil anchor |
| 01/08/1998 | WO1998000570A1 Induction hardened microalloy steel having enhanced fatigue strength properties |
| 01/08/1998 | DE19626833A1 Case nitriding stainless steel with controlled stabiliser contents |
| 01/07/1998 | EP0816520A2 Press-formed article and method for strengthening the same |
| 01/07/1998 | EP0816518A1 Method and apparatus for hardening the surface of a workpiece |
| 01/07/1998 | EP0815268A1 Primary cooling method in continuously annealing steel strip |
| 01/07/1998 | EP0815267A1 Process and device for increasing the degree of absorption during superficial solid phase hardening of workpieces by laser radiation |
| 01/07/1998 | CN1169476A Laser complicated-heat-treatment method for cylinder |
| 01/06/1998 | US5705228 Dip coating steel substrates using melts of coppper, silver and brass at austenizing temperature under tension, heat treatment to produce fine grain ferrite-pearlite crystal structure, cooling and drawing |
| 01/06/1998 | US5704998 Hot rolling steels for high tensile strength |
| 01/06/1998 | CA2121047C Heat treatment of metal castings and in-furnace sand reclamation |
| 01/06/1998 | CA2015978C Method and apparatus for effecting convective heat transfer in a cylindrical industrial heat treat furnace |
| 01/02/1998 | DE19725653A1 Adjustable length induction heater for long metal work pieces |
| 12/30/1997 | US5702667 Method and apparatus for heat treating a bushing |
| 12/30/1997 | US5702548 Tire having circumferential cables for anchoring the carcass |
| 12/30/1997 | US5701775 Process and apparatus for applying and removing liquid coolant to control temperature of continuously moving metal strip |
| 12/29/1997 | EP0813613A1 Method for making steel wires and shaped wires, and use thereof in flexible ducts |
| 12/24/1997 | WO1997048834A1 Method for forming oxidation-passive layer, fluid-contacting part, and fluid feed/discharge system |
| 12/23/1997 | US5700423 Hearth roll with superior endurance capacity |
| 12/23/1997 | US5700420 Non-oxidizing heating method and apparatus |
| 12/23/1997 | CA2111482C Atmospheres for heat treating non-ferrous metals and alloys |
| 12/18/1997 | DE19623559A1 Hardening of metal workpieces |
| 12/17/1997 | EP0812366A1 Variable-width induction heater |
| 12/17/1997 | EP0812365A1 Methods for annealing and pickling high manganic cold rolled steel sheet |
| 12/11/1997 | WO1997041995A3 Workpiece laser machining process |
| 12/11/1997 | DE19638008C1 Apparatus for simultaneous circumferential inductive hardening |
| 12/10/1997 | EP0811699A1 Constant current needle annealing |
| 12/10/1997 | EP0811697A2 Method and apparatus for carburizing, quenching and tempering |
| 12/10/1997 | CN2270053Y Laser processor |
| 12/10/1997 | CN1167160A Apparatus and method for forming heat treating atmospheres |
| 12/10/1997 | CN1167159A Safety method of quenching for manually holding piece into liquid and device thereof |
| 12/10/1997 | CN1167158A Quenching agent for steel wire |
| 12/09/1997 | US5695731 Process for generating nitrogen for heat treatment |
| 12/09/1997 | CA2111499C Annealing of carbon steels in noncryogenically generated nitrogen |
| 12/04/1997 | DE19621844A1 Aerosol-cooling process for rolled products |
| 12/03/1997 | EP0810295A1 Stainless steel for ozone added water and manufacturing method thereof |
| 12/03/1997 | EP0810294A1 Heat treatable stainless steel for combustion engine valves |
| 12/02/1997 | US5693287 Apparatus and method for the manufacture of DR steel strip |
| 11/27/1997 | WO1997044498A1 Widthwise uniform cooling system for steel strip in continuous steel strip heat treatment step |
| 11/27/1997 | WO1997044147A1 Process for shaping a flat metal workpiece |
| 11/27/1997 | DE19620196A1 Verfahren zum Umformen eines flächigen Metallwerkstückes Method for forming a planar metal workpiece |
| 11/26/1997 | EP0808909A1 A process for production of a steel component |
| 11/26/1997 | CN1165865A Heat treatment process of medium-high carbon low alloyed steel forged ball and overhead rollaway type quenching appts. |
| 11/25/1997 | US5689894 Cooling system for annealing material continuously moving on a transport means |
| 11/19/1997 | EP0807692A1 Method of cooling structural steel beams |
| 11/18/1997 | US5688419 Method for mitigating residual stresses in welded metal components using high torch travel speeds |
| 11/18/1997 | US5688339 Oxy-fuel flame impingement heating of metals |
| 11/13/1997 | WO1997042351A1 Making metal powder articles by sintering, spheroidizing and warm forming |
| 11/13/1997 | WO1997041995A2 Workpiece laser machining process |
| 11/13/1997 | DE19618045A1 Verfahren zum Bearbeiten von Werkstücken mit Laserstrahlung Method for processing workpieces with laser radiation |
| 11/13/1997 | CA2252745A1 Making metal powder articles by sintering, spheroidizing and warm forming |
| 11/12/1997 | EP0806485A1 Heat treatment installation |
| 11/12/1997 | EP0671982B1 Zone heating apparatus |
| 11/11/1997 | US5685920 Annealing separator having excellent reactivity for grain-oriented electrical steel sheet and method of use the same |
| 11/11/1997 | US5685088 Sealing apparatus for inlet/outlet of atmosphere facility |
| 11/11/1997 | CA2204928A1 Method for heat treatment of a rail joint which is produced by fusion welding, and a burner arrangement which is intended for use in such a method |
| 11/05/1997 | EP0805218A1 Draining station and heat treatment installation comprising such a drain station |
| 11/05/1997 | EP0804623A1 Improvements in and relating to carbide-free bainitic steels and methods of producing such steels |
| 11/05/1997 | EP0804622A1 Method for heat treatment of steel, and products of steel |
| 11/05/1997 | EP0804308A1 Heat treating and removing cores from castings |
| 11/05/1997 | CN1163795A Process for preparing blanketing gases or reaction gases for heat treatment of metals |
| 10/30/1997 | WO1997040196A1 Method of making a heat treated steel casting and a heat treated steel casting |
| 10/30/1997 | DE19713701A1 Development of compressive residual stresses in corrosion resistant steels and superalloys |
| 10/30/1997 | CA2225384A1 Method of making a heat treated steel casting and a heat treated steel casting |
| 10/29/1997 | EP0803583A2 Primary cooling method in continuously annealing steel strips |
| 10/29/1997 | EP0803581A1 Process for producing a heat treatment atmosphere and method for controlling this process |
| 10/29/1997 | EP0803580A1 Process and apparatus for producing a heat treatment atmosphere |
| 10/29/1997 | EP0803313A2 Method and apparatus for diffusion bonding |
| 10/28/1997 | US5681407 Quenching wrought metal object formed of aluminum, iron, magnesium or alloys thereof by immersing heated object in liquid reservoir of coolant consisting of water and enough dissolved carbon dioxide to retard cooling |
| 10/23/1997 | DE19624598C1 Press seating joint face production on steel shaft |
| 10/23/1997 | CA2203342A1 Process and installation of production of an atmosphere of thermal treatment |
| 10/23/1997 | CA2203231A1 Process for creating a heat treatment atmosphere and a method for controlling such a process |
| 10/22/1997 | EP0802263A1 Forming heat treating atmospheres |
| 10/22/1997 | CN1162653A Process for producing ferritic stainless steel having improved corrosion resistance, especially resistance to intergranular and pitting corrosion |
| 10/21/1997 | US5679307 Facility for in-line heat treatment of hot-rolled products |
| 10/21/1997 | US5679178 Method of manufacturing grain-oriented silicon steel sheet exhibiting excellent magnetic characteristics over the entire length of coil thereof |
| 10/21/1997 | US5678831 Sealing device of compartment gateways of continuous annealing furnaces and continuous painting equipments |
| 10/15/1997 | EP0801214A1 Poppet valve and method of manufacturing it |
| 10/15/1997 | EP0801028A2 Method for selective recovery of salt components from nitrite/nitrate-containing, used hardening salts |
| 10/14/1997 | US5676769 Treating material is pretreated to a preferential temperature in carburization atomosphere supplied with hydrocarbon and oxidizing gas then reheating to a specific temperature, laminar flow oil quenching and hardening |
| 10/14/1997 | US5675883 Method of manufacturing a copper-nickel-silicon alloy casing |
| 10/13/1997 | CA2202416A1 Process for the selective recovery of the salt constituents from used hardening shop salts which contain nitrite-nitrate |
| 10/09/1997 | DE19637464C1 Wear resistant camshaft |
| 10/08/1997 | EP0728052A4 Continuously cast steel strip |
| 10/08/1997 | CN2264190Y Bridge type multifunctional laser heat treatment machine |
| 10/08/1997 | CN2264189Y Special equipment of using laser for surface quenching to corrugated roller |