| Patents for C21D 1 - General methods or devices for heat treatment, e.g. annealing, hardening, quenching, tempering (27,435) |
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| 10/03/1999 | CA2263702A1 Petroleum quench oil |
| 09/30/1999 | WO1999049093A1 Steel material and method for its manufacturing |
| 09/30/1999 | WO1999049092A1 Iron-based magnetic shape memory alloy and method of preparing the same |
| 09/30/1999 | WO1999049088A1 Fluidized-bed treatment process and apparatus |
| 09/30/1999 | CA2325474A1 Iron-based magnetic shape memory alloy and method of preparing the same |
| 09/29/1999 | EP0945521A1 A continuous process for obtaining metal wires and a plant for actuation of the process |
| 09/29/1999 | CN1230333A System, appts. and method for heating metal products in oscillating induction furnace |
| 09/29/1999 | CN1230332A Induction heaters to improve transitions in continuous heating systems, and method |
| 09/29/1999 | CN1230229A Method and device for temper-hardening flat metal products |
| 09/29/1999 | CN1229854A Small steels on-line magnetic field heat treatment process after hot rolled of them |
| 09/29/1999 | CN1045314C Workpiece quenching process and device |
| 09/28/1999 | US5958599 Structures having enhanced biaxial texture |
| 09/28/1999 | US5957684 Heating method and apparatus |
| 09/28/1999 | US5957004 Cam disk and method for producing a cam disk |
| 09/23/1999 | WO1999047713A1 Rotatable joint for a liquid quenching drum |
| 09/22/1999 | EP0943697A1 High-toughness spring steel |
| 09/22/1999 | EP0943694A1 A method for the manufacture of components made of steel |
| 09/22/1999 | EP0943693A1 A method of soft annealing high carbon steel |
| 09/22/1999 | EP0942792A2 Device for cooling extruded profiles |
| 09/22/1999 | CN1229013A Method for manufacture of components made of steel |
| 09/22/1999 | CN1045214C Method and apparatus for heat-treating profiled rolling stock |
| 09/21/1999 | CA2135510C Conductor roll |
| 09/16/1999 | DE19908407A1 High strength valve spring, especially for an automobile engine |
| 09/16/1999 | DE19811216A1 Re-melt hardening of curved surfaces such as cam disks and camshafts |
| 09/15/1999 | EP0813613B1 Method for making steel wires and shaped wires, and use thereof in flexible ducts |
| 09/14/1999 | US5952080 Bearing having micropores, and design method thereof |
| 09/14/1999 | US5951787 Polishing surface of ferrite-based stainless steel; baking in inert gas to remove moisture; heat treating to form chromium oxide that is free from iron oxide on the outermost surface |
| 09/14/1999 | US5950469 Method and equipment for surface-hardening treatment of steel balls for a ball bearing |
| 09/14/1999 | CA2177750C Pre-heating furnace for baked amorphous carbon bodies |
| 09/10/1999 | WO1999045157A1 Device for hardening cylindrical bearing points of a shaft |
| 09/09/1999 | DE19904792A1 Stretched mask for a color picture tube, e.g. a shadow mask tube or an aperture grille tube, in color television and computer color displays |
| 09/09/1999 | DE19809367A1 Precision machining method for i.c. engine piston sleeve |
| 09/09/1999 | DE19808276A1 New chromium-molybdenum-nitrogen alloy steel for sliding elements of sports equipment especially skis and ski-boards |
| 09/08/1999 | EP0940682A1 Roller bearing unit with rotation speed detection instrument for use in cars and method for working the outer race of this bearing unit |
| 09/08/1999 | EP0904423A4 Diffusion bonded sputtering target assembly with precipitation hardened backing plate and method of making same |
| 09/08/1999 | EP0767867B1 Turbine vane flow area restoration method |
| 09/08/1999 | CN2337158Y Isothermal chilling salt bath furnace |
| 09/08/1999 | CN1227875A Technique for eliminating grinding crack |
| 09/08/1999 | CN1227819A Apparatus for producing heat treatment atmospheres |
| 09/07/1999 | CA2186057C Method and apparatus for controlled turbulent purging of open containers |
| 09/07/1999 | CA2138801C Thin steel sheet having excellent stretch-flange ability and process for producing the same |
| 09/07/1999 | CA2096381C Extrusion billet taper quench unit |
| 09/03/1999 | WO1999049094A1 Stainless steel |
| 09/02/1999 | WO1999022033A8 Process of surface hardening and device for its realization |
| 09/01/1999 | EP0939137A1 Method for preventing adhesion of sheet metal surfaces during heat treatment |
| 08/31/1999 | US5944921 Martensitic stainless steel having high mechanical strength and corrosion resistance and relative manufactured articles |
| 08/31/1999 | US5944917 Stainless steel for ozone added water and manufacturing method thereof |
| 08/31/1999 | US5943782 Method for hardening selected regions of a guide bar for chain saws, and guide bar produced thereby |
| 08/25/1999 | EP0937782A2 Martensitic stainless steel having oxide scale layers and method of manufacturing the same |
| 08/25/1999 | CN1226674A Convection-radiation system for heat treatment of continuous strip |
| 08/25/1999 | CN1044826C Perlite rail of high abrasion resistance and manufacture thereof |
| 08/25/1999 | CN1044822C Superhard heat treatment for tobacco cutting machine blade |
| 08/25/1999 | CA2263021A1 Process to prevent metallic sheets from sticking during metal heating |
| 08/24/1999 | US5942051 Improved magnetic properties; steel comprising carbon, silicon, manganese, aluminum, rare earth metal, titanium, zirconium, iron |
| 08/19/1999 | WO1999041952A1 Induction heating coil and induction heating device using the induction heating coil |
| 08/19/1999 | WO1999041422A1 Corrosion resisting steel and corrosion resisting oil well pipe having high corrosion resistance to carbon dioxide gas |
| 08/19/1999 | WO1999041340A1 Fuel gas mixture, in particular for cutting torch |
| 08/19/1999 | DE19905518A1 Piston ring combination for use in internal combustion engines |
| 08/18/1999 | EP0936274A1 Clad sheet with good flatness and improved abrasion resistance |
| 08/18/1999 | EP0936273A1 Method for heat treatment with laser radiation |
| 08/17/1999 | US5938866 Method and an apparatus for the treatment of components by a gas mixture |
| 08/17/1999 | US5937688 Adjustable side guide with quick change strip heater assembly |
| 08/17/1999 | CA2152335C Method for treating the radiant tubes in a thermal cracking process |
| 08/17/1999 | CA2081360C Galvanized ultra-high strength steel strip |
| 08/12/1999 | WO1999040594A1 Amorphous alloy with increased operating induction |
| 08/12/1999 | CA2320084A1 Amorphous alloy with increased operating induction |
| 08/11/1999 | CN2332731Y Coal burning (carbone) continuous hardening salt bath furnace |
| 08/11/1999 | CN1044617C Non-oxidation heat treatment for ordinary miniature silicon steel sheet |
| 08/10/1999 | US5935352 Process for production of a steel component |
| 08/10/1999 | US5935346 Magnetic component of soft magnetic alloy is annealed at a temperature below curie point of the alloy in a direct or undirect current, unidirctional, longitudinal or transverse magnetic field, forming a magnet of desired hysteresis loop |
| 08/10/1999 | US5934871 Method and apparatus for supplying a anti-oxidizing gas to and simultaneously cooling a shaft and a fan in a heat treatment chamber |
| 08/05/1999 | WO1999039017A1 Advanced case carburizing secondary hardening steels |
| 08/05/1999 | DE19803633A1 Vacuum hardening oven with air cooling flow through ducts controlled by flaps and slides with single drive mechanism |
| 08/04/1999 | EP0933437A2 Method of heat-treating a hollow cylindrical workpiece |
| 08/04/1999 | CN1224765A Method for heat-treating hollow cylindrical workpiece |
| 08/03/1999 | US5932170 Apparatus for the treatment of metallic workpieces |
| 08/03/1999 | US5931665 Furnace for firing a glass-lined product |
| 07/28/1999 | EP0931842A1 Apparatus for producing heat treatment atmospheres |
| 07/28/1999 | EP0930953A1 Bearing having micropores, and design method thereof |
| 07/28/1999 | EP0828581B1 Laser beam apparatus and workpiece machining process |
| 07/28/1999 | CN2330956Y Improved salt-bath furnace |
| 07/28/1999 | CN2330660Y Heat-treatment equipment for internal combustion engine |
| 07/28/1999 | CN2330659Y Mechanical sine-wave cylinder block laser quenching machine tool |
| 07/28/1999 | CN1044389C Steel ball making process |
| 07/28/1999 | CN1044387C Method for medium frequency quenching cam |
| 07/27/1999 | US5928604 Automated system for carburizing a component |
| 07/27/1999 | US5928442 Medium/high carbon low alloy steel for warm/cold forming |
| 07/27/1999 | CA2156952C Hearth roll with superior endurance capacity |
| 07/27/1999 | CA2152216C Corrosion-resistant metallic porous member and method of manufacturing the same |
| 07/22/1999 | WO1999028641A3 Bainitically hardened brake disk |
| 07/22/1999 | WO1999022038A3 Induction hardening apparatus for a crankshaft |
| 07/21/1999 | CN1223303A Mixing type water-base metal treatment quenching agent |
| 07/21/1999 | CN1044263C Highly corrosion-resistant martensitic stainless steel with excellent weldability and process for producing the same |
| 07/20/1999 | US5925271 Laser beam shaping device and process including a rotating mirror |
| 07/14/1999 | EP0928834A1 Furnace atmosphere dew point control |
| 07/14/1999 | EP0928833A2 Electric heating treatment method, electric heating treatment apparatus, and electrode for electric heating treatment apparatus |
| 07/14/1999 | CN2328665Y External heat source movable forging waste heat isothermal annealing device |
| 07/14/1999 | CN1044135C Sealing device for zone outlet/inlet of atmosphere equipment |
| 07/13/1999 | US5922234 System apparatus and method for heating metal products in an oscillating induction furnace |
| 07/13/1999 | US5922149 Heat treatment is performed including quenching of the shaping wire to obtain a hardness and predominant martensitic and bainitic steel structure with a small amount of ferrite; hydrogen sulfide corrosion resistance |