| Patents for C21D 9 - Heat treatment, e.g. annealing, hardening, quenching, tempering, adapted for particular articles; Furnaces therefor (30,082) |
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| 05/30/1989 | US4834344 Apparatus for inside-outside tube quenching |
| 05/30/1989 | CA1254953A1 Rail head inductor |
| 05/23/1989 | US4832764 Process for the low-distortion thermomechanical treatment of workpieces in mass production as well as application of the process |
| 05/23/1989 | US4832154 Buffer stop device for a side loading furnace |
| 05/18/1989 | DE3804984C1 Electric heating arrangement for heating the area of the longitudinal weld seam of can bodies |
| 05/17/1989 | EP0315787A1 Improving fatigue life of component such as a bar |
| 05/17/1989 | CN2037835U Vacuum-chamber type heat-insulating device for box furnace |
| 05/16/1989 | US4830684 Using electricity-controlling temperature |
| 05/16/1989 | US4830611 Process for welding a railway rail, aluminothermic heating blocks for use in the process, and method of making said aluminothermic heating blocks |
| 05/16/1989 | US4830610 High temperature convection furnace |
| 05/16/1989 | US4829656 Process for making hot-rolled steel strip |
| 05/11/1989 | DE3736422A1 Camshaft and method for its manufacture |
| 05/10/1989 | EP0314876A1 Apparatus for applying anti-sticking agent on annealed oriented electrical sheet steel in coil |
| 05/10/1989 | CN1032758A Method of and apparatus for producing tubes with small diameter and thick wall |
| 05/09/1989 | US4828227 Inductor for the inductive reheating of metallurgical products |
| 05/05/1989 | WO1989003729A1 Device for producing a water curtain |
| 05/03/1989 | EP0314667A1 Process and apparatus for manufacturing thin wires, rods, pipes or sections made of steels or alloys with a low deformability, particularly of hardenable steels |
| 05/03/1989 | EP0314145A1 Method for manufacturing steel article having high toughness and high strength |
| 05/03/1989 | EP0314144A1 Method for manufacturing steel article having high toughness and high strength |
| 05/03/1989 | EP0313896A1 Manufacturing method and device for manufacturing optical cables |
| 05/03/1989 | EP0313726A2 Process and furnace to heat slabs, billets, ingots, sheets, steel bands and similar charges |
| 05/03/1989 | DE3735790A1 Working method and devices for the temperature-controlled cooling of rolling stock |
| 05/03/1989 | DE3735789A1 Method for transferring heat |
| 05/02/1989 | US4827099 Method and apparatus for continuous production of tubular bodies by means of laser longitudinal seam welding |
| 05/02/1989 | US4826138 Apparatus for heat treating steel plates |
| 05/02/1989 | US4825807 Apparatus for applying anti-sticking agent on annealed oriented electrical sheet steel in coil |
| 05/02/1989 | US4825674 Metallic tubular structure having improved collapse strength and method of producing the same |
| 04/26/1989 | EP0312883A1 Processing electrical steels |
| 04/26/1989 | EP0312843A1 Process for heat exchange and its use in the controlled cooling of rolled products |
| 04/26/1989 | EP0312632A1 Foamed ceramic panel and method of producing the same |
| 04/25/1989 | US4824536 Induction annealing, electrolysis descaling |
| 04/25/1989 | CA1253054A1 Method for the surface hardening of drill rod couplings, and the rods thus obtained |
| 04/19/1989 | EP0311753A1 Device for changing tools in quenching machines |
| 04/19/1989 | CN2036180U One step complex heating device for integrate heating of nodular cast iron crankshaft |
| 04/19/1989 | CN1032428A Automatical device for rapid heat chemical processing |
| 04/18/1989 | US4821386 Method of producing a rolling bearing race |
| 04/13/1989 | DE3731950A1 Annealing furnace with horizontal-axis rotary hearth |
| 04/12/1989 | EP0311030A1 Process for annealing metallic work pieces in a continuous furnace |
| 04/12/1989 | CN2035663U Water-cooling device for bar and wire material |
| 04/11/1989 | US4820359 Inserting heater into conduit; heat exchangers used in nuclear steam generators |
| 04/11/1989 | US4820357 Low grade material axle shaft |
| 04/06/1989 | DE3803064C1 Cold-rolled sheet or strip, and process for its manufacture |
| 04/06/1989 | DE3731726A1 Method for producing laminations for stacking transformer iron cores |
| 04/05/1989 | EP0309656A1 Roller hearth reheating furnace for continuously cast slabs |
| 04/05/1989 | EP0309563A1 Electric induction heat treating furnace. |
| 04/05/1989 | CN2035450U Thermal insulator for shaft furnace vacuum chamber |
| 04/04/1989 | US4818833 Apparatus for radiantly heating blade tips |
| 04/04/1989 | US4818311 Methods of and apparatus for heating a moving metallic strand material |
| 04/04/1989 | US4817920 Apparatus for continuous heat treatment of metal strip in coil form |
| 04/04/1989 | US4817859 Method of joining nodular cast iron to steel by means of fusion welding |
| 03/29/1989 | EP0309354A1 Automatic apparatus for fast thermochemical treatment |
| 03/29/1989 | EP0308512A1 Apparatus for dull finish of roll with pulse laser |
| 03/28/1989 | US4816089 Process for heat treating a heat exchanger tube surrounded by a support plate |
| 03/28/1989 | CA1251640A1 Apparatus for hot homogeneisation of continuously streaming metal products |
| 03/23/1989 | DE3824261C1 Method for producing recesses, serving to receive lubricant, on workpiece surfaces |
| 03/22/1989 | EP0308361A1 Process for manufacturing steel pressure vessels |
| 03/22/1989 | EP0307905A2 Method for producing grainoriented electrical steel sheet with very high magnetic flux density |
| 03/22/1989 | EP0307474A1 Method and cover furnace for heat treatment of metal sheet in rolls |
| 03/22/1989 | CN2034585U Heat-treatment furance of liquefied petroleum gas steel bottle |
| 03/21/1989 | US4813654 Annealing furnace base construction |
| 03/21/1989 | US4813653 Fluidized bed apparatus |
| 03/21/1989 | US4813554 Reversible, adjustable, stackable loading grid assembly |
| 03/16/1989 | DE3809681C1 Plant for the production of hot-rolled steel |
| 03/15/1989 | EP0306767A1 System for cutting complex structures |
| 03/14/1989 | US4812608 Oven for thermo-magnetic treatment of toroidal coils of amorphous ferro-magnetic ribbon material |
| 03/14/1989 | US4812181 Method of achieving a flat magnetization loop in amorphous cores by heat treatment |
| 03/14/1989 | US4811888 Method and apparatus for manufacturing small diameter, thick walled, cable sheaths |
| 03/14/1989 | US4811584 Thermal processing methods |
| 03/14/1989 | US4811583 For application in a vacuum apparatus |
| 03/09/1989 | DE3803973C1 Apparatus for quenching elongated cylindrical pressure vessels |
| 03/08/1989 | EP0306076A1 Method and apparatus for the manufacture of formable steel strip |
| 03/07/1989 | US4810843 Device for inductively heating the edges of elongated moving workpieces |
| 03/07/1989 | US4810311 Process for manufacturing a high strength rail |
| 03/07/1989 | US4810191 Processing steel slabs |
| 03/07/1989 | CA1250904A1 Inductive edge heating of hot-worked strip material and the like |
| 03/02/1989 | DE3744755A1 Crank mechanism of an internal combustion engine of V-design |
| 03/02/1989 | DE3728041A1 Method for the production of bent parts from pre-hardened metals by cold forming |
| 03/01/1989 | EP0305038A2 Method of annealing an aperture shadow mask for a colour cathode ray tube |
| 02/28/1989 | US4808791 Method for processing large cast iron dies, particularly for vehicle sheet-metal pressing, and the apparatus for its implementation |
| 02/28/1989 | US4808779 Single cycle, single frequency induction contour hardening process |
| 02/28/1989 | US4807853 Continuous furnace for gas carburizing and hardening |
| 02/28/1989 | US4807801 Method of ameliorating the residual stresses in metallic duplex tubes and the like and apparatus therefor |
| 02/28/1989 | US4807457 Line to cool wound bundles of rolled wire and rod |
| 02/23/1989 | WO1989001529A1 Control of straightness in scanning induction hardening of steel |
| 02/23/1989 | WO1989001414A1 Process and means for making metal inking rolls |
| 02/23/1989 | DE3726802A1 Method of heat treatment of metal workpieces as well as device for implementing the method |
| 02/22/1989 | EP0304047A1 Process and means for making metal inking rolls, particularly for flexographic printing, with highly hardened superficial engraved layer, and rolls obtained with such process and means |
| 02/21/1989 | US4806731 Process for marking the surface of a rolling mill |
| 02/21/1989 | US4806176 Precipitation of aluminum nitride, annealing, hot & cold rolling |
| 02/15/1989 | EP0303419A1 Process for laser hardsurfacing drill bit cones having hard cutter inserts |
| 02/15/1989 | EP0303041A2 Oil-quenched and tempered hard drawn steel wire with a shaped section, and process for producing the same |
| 02/15/1989 | EP0302951A1 Process for making wire mesh screens |
| 02/08/1989 | EP0302295A1 Holding device for partial heat treatment of tools in furnaces |
| 02/08/1989 | EP0302257A1 Equalization furnace for continuously cast billets |
| 02/07/1989 | US4803037 Pipe quenching apparatus |
| 02/07/1989 | CA1249737A1 Martensitic stainless steels for seamless steel pipe |
| 02/01/1989 | EP0301228A1 Process for producing hot-rolled strip |
| 01/31/1989 | US4801341 One-sided enamelable hot-rolled steel sheet and process for producing the same |
| 01/31/1989 | US4800949 Method and installation for the continuous manufacture of pipes from spheroidal graphite cast-iron having a controlled structure |
| 01/26/1989 | DE3737836A1 Hochkorrosionsbestaendiger austenitischer nichtrostender stahl und verfahren zu seiner herstellung Hochkorrosionsbestaendiger austenitic stainless steel and process for its preparation |