Patents for C21D 1 - General methods or devices for heat treatment, e.g. annealing, hardening, quenching, tempering (27,435)
12/1994
12/28/1994EP0630720A1 Optical system for laser beam generator
12/28/1994EP0630417A1 High strength steel sway bars and method of making
12/28/1994EP0630295A1 Method and device for reducing scale formation during hot forming of metal, in particular steel.
12/28/1994EP0551333B1 Process for manufacturing a texturing roller
12/27/1994US5376188 Method of nitriding austenitic stainless steel products
12/27/1994US5376186 Heat treating oil composition
12/24/1994CA2126057A1 Oxy-fuel flame impingement heating of metals
12/22/1994DE4320408A1 Process-control method for the surface machining of workpieces with pulsed laser radiation
12/21/1994CN1096565A Interference assembling technique for engine
12/20/1994US5374322 Method of manufacturing high strength steel member with a low yield ratio
12/20/1994US5373893 Method and apparatus for cooling thermally massive parts in a continuous furnace
12/15/1994DE4319594A1 Method and device for joining a diffuser
12/14/1994EP0628641A1 Constrained hardening apparatus and heat treatment apparatus
12/14/1994EP0628374A1 Process for the intermediate cast welding of isothermical annealed rails
12/14/1994EP0628358A1 Method and apparatus for layer removal in solid heat-resistant materials
12/14/1994EP0627965A1 Process and apparatus for applying and removing liquid coolant to control temperature of continuously moving metal strip
12/14/1994EP0549656B1 Process and device for the reduction annealing of powdered iron
12/14/1994EP0483182B1 Process for hardening the cutting edges of saws, knives and cutting tools
12/13/1994CA2045442C Cooling system for cooling a moving metal strip
12/13/1994CA2005823C Heat treatment process and apparatus for metal parts cementation, carbonitriding or heating before hardening
12/12/1994CA2125507A1 Method for raising welded rail connections lying below the traveling surface on railroad tracks
12/08/1994WO1994028189A1 High-carbon steel rod wire or steel wire excellent in workability in wire drawing and process for producing the same
12/08/1994WO1994028188A1 High-carbon steel wire or steel therefor excellent in workability in wire drawing and process for producing the same
12/08/1994WO1994028187A1 High-carbon steel rod wire or steel wire excellent in workability in wire drawing and process for producing the same
12/08/1994WO1994028182A1 Steel bars and rods and manufacturing process
12/08/1994DE4333940C1 Process for treating parts
12/07/1994EP0627019A1 Process for the thermochemical-heat treatment of case-hardened steels
12/07/1994EP0553243B1 Fluidized bed apparatus and method using same
12/07/1994CN1096056A Preparation of iron-base nanometer crystal alloy by complete crystallization method
12/06/1994US5370172 Safety device for mobile modules which inductively heat or reheat metallurgical products
12/01/1994DE4419035A1 Wälzlager Rolling bearings
11/1994
11/30/1994EP0626468A1 Process for carbonitriding steel
11/30/1994EP0411061B1 Fe-Mn-Al-C ALLOYS AND THEIR TREATMENT
11/30/1994CN2183997Y Adjustable diameter induction block
11/30/1994CN1026819C Method and apparatus for heat transmitting between blocks casted by continous casting machine and blocks which have been worked
11/30/1994CN1026801C Method of nitriding steel and heat treat furnaces used therein
11/29/1994US5368656 Microstructure of iron carbides and vanadium and niobium carbonitrides, hardness, toughness
11/29/1994CA1333250C Processes and devices for obtaining an homogeneous austenite structure
11/24/1994WO1994026940A1 Thermal treatment device for metallic workpieces
11/24/1994WO1994026939A1 A method of heat treating metal with liquid coolant containing dissolved gas
11/23/1994EP0625586A1 Structural member and process for producing the same
11/23/1994EP0625383A1 Line to produce strip and/or sheet
11/23/1994CN1095421A Manufacture of bainite steel rail with high strength and good performence of anti-rolling-endurance-failure
11/22/1994US5366569 Method for producing a corrosion-resistant composite wire
11/22/1994US5366568 Method of producing primarily tempered martensite steel
11/22/1994US5366566 Method for preparing a very high quality magnetic material
11/22/1994US5366205 Carburization installation
11/18/1994CA2121556A1 Line to produce strip and/or sheet
11/17/1994EP0624205A1 High-strength steel parts and method of making
11/17/1994EP0605444A4 Process and apparatus for surface hardening of refractory metal workpieces.
11/16/1994CN1095109A Renovating process for waste or old roll
11/15/1994US5364476 Industrial variable carbon potential gas generator
11/15/1994US5364331 Heat resistant roll for use in steel plate manufacturing equipment
11/15/1994US5364080 For heat treating metal stock
11/10/1994WO1994025635A1 Sheet steel excellent in flanging capability and process for producing the same
11/10/1994WO1994024840A2 Thin film heat treatment apparatus
11/10/1994DE4405027A1 Method and apparatus for applying a temperature profile to metal billets intended for extrusion
11/09/1994CN1094756A Roller sleeve steel for aluminium casting-rolling mill
11/09/1994CN1026499C Heat treatment of corrosion resistant steels
11/08/1994US5362031 Method and apparatus for the automatic monitoring of operating safety and for controlling the progress of the process in a vacuum heat-treatment oven
11/02/1994EP0622466A1 Method of hardening pieces of spheroidal graphite cast iron
11/02/1994EP0621904A1 Device for heat-treating metal workpieces.
11/01/1994US5360963 Apparatus for and method of induction-hardening machine components
11/01/1994US5360495 Process for hardening cutting edges with an oval shaped plasma beam
11/01/1994US5360203 Floatation pressure pad for metal strips
11/01/1994US5360202 Blackening Treating furnace for treating stainless steel strip surface
11/01/1994US5359773 Manufacturing method of the roll main body of a caliber roll
11/01/1994CA2035784C Controlling heat treating furnaces
10/1994
10/27/1994WO1994024837A1 Induction heating of loaded materials
10/27/1994CA2160990A1 Induction heating of loaded materials
10/26/1994EP0621345A1 Process and device for heat-treating workpieces
10/26/1994EP0621344A1 Flexible adaptive quenching
10/26/1994EP0532589B1 Fluidized bed with submerged infrared lamps
10/26/1994CN2181106Y Focal spot width adjustable laser beam treating device
10/25/1994US5358744 Process for coating a ferritic stainless steel strip with aluminum by hot quenching
10/19/1994EP0620059A1 Method of making a profile wire
10/19/1994EP0619845A1 Solid metal-carbon matrix of metallofullerites and method of forming same
10/19/1994CN1093754A Method for optimization of semi-hard cold-rolled plate composition and compression ratio matching method
10/18/1994US5356494 High strength cold rolled steel sheet having excellent non-aging property at room temperature and suitable for drawing and method of producing the same
10/13/1994WO1994023086A1 Bainite rod wire or steel wire for wire drawing and process for producing the same
10/13/1994WO1994023084A1 Bainite rod wire or steel wire for wire drawing and process for producing the same
10/13/1994WO1994023083A1 Bainite rod wire or steel wire for wire drawing and process for producing the same
10/12/1994EP0619376A1 Method for manufacturing grain oriented electrical sheets with improved core loss
10/12/1994EP0619157A1 Gear making process
10/12/1994CN2179386Y Rotary crankshaft cooling apparatus
10/12/1994CN2179385Y Workpiece combustible oil heating furnace
10/11/1994US5354963 Process and a device for continuous surface treatment of rod-shaped, longitudinally extended materials with metal surfaces using a magnetically displaced plasma arc
10/11/1994US5354389 Controlling temperature during hot rolling, cold rolling; annealing in a reducing or non-oxidizing atmosphere
10/11/1994US5354038 Heat treatment of metal castings and in-furnace sand reclamation
10/11/1994CA1332373C Laser surface treatment
10/05/1994EP0617879A1 Induction furnace.
09/1994
09/29/1994DE4319416C1 Method for raising rail-joint welds lying below the running surface in railway tracks
09/28/1994EP0617134A1 Process for remelting surface areas of workpieces
09/28/1994EP0616647A1 Heavy-duty solid wheels and tyres for rail locomotives and trucks
09/28/1994EP0616646A1 Method for the thermal treatment of metal products
09/28/1994EP0556176B1 A control system for scheduling parts in a heat-treating process
09/27/1994US5350467 Method of heat treating a zone of each of a plurality of articles
09/27/1994CA1332143C Method and apparatus for jet gas impingement quenching
09/22/1994DE4308803A1 Process and appliance for producing a carbon-containing gaseous treatment atmosphere
09/22/1994DE4308314A1 Method and device for the surface treatment of a workpiece by means of a laser beam of specific beam-spot geometry