| Patents for C21D 7 - Modifying the physical properties of iron or steel by deformation (3,811) |
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| 03/23/1994 | EP0588128A1 Process of hot forging at ultrahigh temperature |
| 03/22/1994 | US5296675 Welding aluminum based alloys with electric arcs then quenching with trailing gas and shot peening |
| 03/16/1994 | EP0587150A1 Process for hot working continuous-cast bloom and steel ingot |
| 03/09/1994 | EP0586179A1 Forging and a method for its manufacture |
| 03/03/1994 | WO1994004297A1 Heat treatment of metal castings and in-furnace sand reclamation |
| 03/03/1994 | DE4228105A1 Cold working method for concrete reinforcing rod - using two bending-stretching units acting at 90 degrees to one another |
| 02/15/1994 | US5286315 Continuous feeding onto cooling surface; impinging rigid particles against surface; heat-annealing to recrystallize |
| 02/03/1994 | DE4225479A1 Producing reinforcing steel strengthened by stretch treatment - with stretch and straightening units fed with wire from loose bundles |
| 02/02/1994 | EP0581385A1 Split sleeve cold expansion |
| 01/27/1994 | DE4327096A1 Method for increasing strength of fusion welded joints - of aluminium@ sections by shot peening weld joint area |
| 01/19/1994 | CN1023569C Prepn. of pumping rod without heat treatment |
| 01/13/1994 | DE4222147A1 Circular saw blade with radical slits along its periphery - has precision input zones with material accumulation in region of centre facing slot end |
| 12/21/1993 | US5271282 Sensor for lance-type shot peening guns |
| 12/07/1993 | US5268040 Method for steel surface hardening treatment and an apparatus therefor |
| 12/02/1993 | DE4315618A1 Method of mfg. precision components of refined tool steel - starts with cylindrical bolt blank of hardened steel and specified tensile strength followed by machining |
| 11/30/1993 | US5265456 Method of cold working holes using a shape memory alloy tool |
| 11/25/1993 | WO1993023576A1 Methods and apparatus for effecting domain refinement of electrical steels |
| 11/10/1993 | CN1078179A Method and apparatus for minmization of oxide during hot working of metal, particularly steel |
| 11/02/1993 | US5258082 Steel; hardness, creep resistance; vehicle suspensions |
| 10/28/1993 | DE4213186A1 Base blade prodn. method for circular saws, grinding and cutting off disks - involves stacking blade disks and traversing lance with radial shot peening nozzle along peripheral slits to peen bottom of slit in direction parallel to disk plane |
| 10/27/1993 | EP0309547B1 Variable strength materials formed through rapid deformation |
| 10/14/1993 | WO1993020247A1 Process and device especially for ultrasonic hardening of metallic components |
| 09/30/1993 | WO1993018869A1 Method and device for reducing scale formation during hot forming of metal, in particular steel |
| 09/16/1993 | WO1993018189A1 High strength steel sway bars and method of making |
| 09/16/1993 | DE4208208A1 Verfahren und vorrichtung zur verminderung der zunderbildung beim warmumformen von metall, insbesondere von stahl Method and device for the rundown of scale formation during hot forming of metal, especially steel |
| 08/31/1993 | US5240520 High strength, ultra fine steel wire having excellent workability in stranding and process and apparatus for producing the same |
| 08/31/1993 | US5240514 Method of ion nitriding steel workpieces |
| 08/25/1993 | EP0556788A2 Hard alloy |
| 08/17/1993 | US5236520 Geometric configuration; at least one bend; preferred orientation of grains; warm working |
| 08/17/1993 | US5235838 Method and apparatus for truing or straightening out of true work pieces |
| 08/11/1993 | CN1021776C Cold molding reinforcing process for low-carbon manganese niobium steel fastening parts |
| 08/05/1993 | WO1993015233A1 High-strength steel parts and method of making |
| 07/28/1993 | EP0552272A1 Gear wheels rolled from powder metal blanks. |
| 07/20/1993 | US5228245 Non-machining surface strengthening of transformation toughened materials |
| 07/06/1993 | US5225008 Method for manufacturing a high-strength spring |
| 06/22/1993 | US5221372 Cryogenically deforming austenitic microstructure to martensitic structure, tempering, surface nitriding; useful for bearing applications |
| 06/15/1993 | US5218854 System for cold expanding holes in rail sections |
| 06/09/1993 | DE4140807A1 Compact coil mfr. line for reinforcing rod - with cold deformation by stretching for uniform strength |
| 06/02/1993 | CN1072754A Impeller stress improvement through overspeed |
| 06/01/1993 | US5215829 Adaptation to withstand internal pressure by absorbing stress; temperature differential; generating stress; pressurization; depressurization; high pressure pipes in nuclear power plants |
| 05/26/1993 | CN1020927C Variable strength materials formed through rapid deformation |
| 05/25/1993 | US5212976 Method and apparatus for controlling shot peening device |
| 05/19/1993 | EP0541911A1 Method for improving the capability of a body to withstand stress in rotation |
| 05/16/1993 | CA2076243A1 Impeller stress improvement through overspeed |
| 05/12/1993 | EP0540916A1 Improved high-intensity rotary peening particle support and method of making same |
| 05/11/1993 | CA1317444C Method and apparatus for producing turbine blade roots |
| 05/07/1993 | CA2080265A1 High-intensity rotary peening particle support and method of making same |
| 05/05/1993 | EP0540172A1 Shot peening system |
| 04/20/1993 | US5204826 Quality assurance of surface treatments by analysis of substrate surface line traces |
| 04/20/1993 | US5203545 Vehicle suspension member designed to divert crack propagation |
| 04/20/1993 | US5203189 High-intensity roto peen flaps, method of making same, wheels incorporating same, and methods of using wheels incorporating same |
| 04/15/1993 | DE4133937A1 Method of finishing IC engine cylinders and pistons - involves having cast part over whose surface rounded diamond toolbit is slid under pressure |
| 04/14/1993 | EP0536986A1 A method for steel surface hardening treatment and an apparatus therefor |
| 04/14/1993 | CN1070949A Drill rod water hole inside wall cold hardening technology |
| 04/13/1993 | CA1315964C Manufacturing method of disk for belt-driven continuously-variable-speed drive |
| 03/16/1993 | US5193375 Method for enhancing the wear performance and life characteristics of a brake drum |
| 02/09/1993 | US5185044 Solidifying steel melt to form ingot, heating, enclosing in malleable envelope, shaping at two specified temperatures, removing envelope |
| 02/03/1993 | EP0525918A1 Surface-treated metal body, process for producing the same, photoconductive member using the same and rigid ball for treating metal body surface |
| 01/28/1993 | DE4124776A1 Mfr. of pulse source with alternating magnetisable and non-magnetisable fields - involves deformation process subjecting source made of austenitic steel having face-centred cubic lattice |
| 01/27/1993 | CN1068371A Method and equipment for raising elongation of cold-worked wire rod |
| 01/19/1993 | US5179852 Metallurgy, steels |
| 01/13/1993 | EP0522932A1 Abrasive blasting method for workpieces with a method of measuring the intensity and installation for carrying it out |
| 01/05/1993 | US5176018 Shot sensing shot peening system and method having a capacitance based densitometer |
| 12/09/1992 | EP0516857A1 High-strength ultrafine steel wire with excellent workability in stranding, and process and apparatus for producing the same |
| 11/05/1992 | DE4114301A1 Conversion of metastable austenite to martensite, for pressure vessel mfr. - subjecting to oscillating strain pref. at cryogenic temp. |
| 10/27/1992 | US5158435 Impeller stress improvement through overspeed |
| 09/22/1992 | CA1307722C Apparatus for forming variable strength materials through rapid deformation and methods for use therein |
| 09/22/1992 | CA1307721C Variable strength materials formed through rapid deformation |
| 09/15/1992 | US5147140 Ball-and-roller bearing |
| 09/08/1992 | US5144734 Method for making a vehicle suspension member |
| 08/18/1992 | US5139581 Method of making a metal earth working implement |
| 08/05/1992 | EP0497610A2 Quality assurance of surface treatments by analysis of substrate surface line traces |
| 08/02/1992 | CA2059939A1 Quality assurance of surface treatments by analysis of substrate surface line traces |
| 07/30/1992 | DE4101957A1 Treatment of surfaces e.g. metal surfaces - using vortex-bed reactor in which filling is mixt. of inorganic and organic granulated substance and is environmentally friendly |
| 07/01/1992 | EP0492323A2 Method for the surface-treatment of parts |
| 06/09/1992 | CA1302665C Steel sheets for painting and a method of producing the same |
| 05/20/1992 | WO1992008817A1 High-strength ultrafine steel wire with excellent workability in stranding, and process and apparatus for producing the same |
| 05/14/1992 | WO1992007966A1 High-strength steel parts and method of making |
| 04/09/1992 | WO1992005897A1 Gear wheels rolled from powder metal blanks |
| 03/31/1992 | CA1298061C Method and apparatus for continuous compression forging of continuously cast steel |
| 03/26/1992 | DE4134333A1 Increasing tensile and vibrational strength of metal surface - by producing induced magnetic stress in surface area using current carrying rod |
| 03/11/1992 | EP0474457A1 Channel forming apparatus |
| 03/10/1992 | US5094698 Warm forming |
| 02/05/1992 | EP0469410A1 Method and device for strengthening of reinforcing bars for concrete |
| 02/04/1992 | US5085411 Apparatus for processing grain-oriented electrical steel strip |
| 01/15/1992 | EP0465683A1 Corrugation resisting rail for railway vehicles |
| 12/03/1991 | US5068963 Piston rings |
| 09/25/1991 | EP0448510A1 Method for avoiding cracks in cutting or grinding discs |
| 08/07/1991 | EP0439464A1 A method and apparatus for correcting deviations in the shape of hardened metal objects |
| 07/02/1991 | US5027635 Channel hot-forming apparatus |
| 06/26/1991 | EP0433786A1 Apparatus for processing grain-oriented electrical steel strip |
| 05/28/1991 | US5019182 Method of forming hard steels by case hardening, shot-peening and aging without tempering |
| 05/21/1991 | US5017335 Microalloyed steel and process for preparing a railroad joint bar |
| 05/08/1991 | CN1051201A Prepn. of pumping rod without heat treatment |
| 05/01/1991 | CN1012470B Steel sheets for painting and method of producing the same |
| 04/23/1991 | US5009974 Charging photoconductive member, imagewise exposing with laser beam to form electrostatic image |
| 04/23/1991 | US5009723 Method for manufacturing high strength non-magnetic stainless steel |
| 04/16/1991 | US5007266 Successive cold working process |
| 04/02/1991 | US5003880 Process for the impact healing of inner discontinuities or defects in the sub-surface region of a cast component |
| 03/26/1991 | US5001917 Method and apparatus for truing or straightening out of true work pieces |