| Patents for B21H 1 - Making articles shaped as bodies of revolution (2,244) |
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| 08/07/2013 | CN203109132U Numerical-control vertical ring rolling machine |
| 08/07/2013 | CN103230993A Method for determining dimension of radial rolled blank of cone frustum-section ring element |
| 08/07/2013 | CN103230992A Method for determining dimension of radial rolled blank of stepped double-cone section ring element |
| 08/07/2013 | CN103230991A Method for determining geometric dimension of cold rolled blank of double-groove ball-section ring element |
| 08/07/2013 | CN103230990A Multidirectional composite vibration incremental type rolling and forming device and technology thereof |
| 08/07/2013 | CN102240760B Process for ring rolling deep spigot type complex ring-shaped forged piece |
| 07/31/2013 | CN203091635U Upper connecting ring press |
| 07/31/2013 | CN103228374A Hollow coil spring and method for manufacturing same |
| 07/31/2013 | CN103223452A Wheel-web-rolling mill |
| 07/31/2013 | CN102161069B Forming method of no-material-head shaft piece by cross wedge rolling |
| 07/17/2013 | CN203061788U Counterboring wheel |
| 07/10/2013 | CN203044764U Vertical type numerical control radial ring rolling machine |
| 07/10/2013 | CN203044763U High-precision internal expanding type forging and grinding machine |
| 07/10/2013 | CN203044762U Special tooling lock device for ring rolling of asymmetric irregular section |
| 07/10/2013 | CN103192010A Dual ring rolling production process of thin-sheet wind driven generator |
| 07/10/2013 | CN102091749B Axial rolling device for vertical ring rolling machine |
| 07/03/2013 | CN203030808U Hoop rolling machine |
| 06/19/2013 | CN103167933A Machine for deep-rolling axles |
| 06/19/2013 | CN103157962A Preparation method of slant-rolling tin ball |
| 06/12/2013 | EP2602501A1 Manufacturing method for bearing outer ring |
| 06/12/2013 | CN103143658A Rolling forming method for bearing steel complex abnormal section annular element |
| 06/06/2013 | WO2012073786A9 Hollow coil spring and method for manufacturing same |
| 06/05/2013 | CN202963336U Special-shaped ring forging die |
| 06/05/2013 | CN103140306A Spinning processing method and rotor shaft |
| 06/05/2013 | CN102319842B Outer diameter outline on-line measuring device for large-scale cylindrical shell section mill |
| 06/05/2013 | CN102036767B Circular rolling mill with shaping roller |
| 06/04/2013 | US8453484 Manufacture of a shaft/hub connection |
| 05/30/2013 | WO2013075573A1 Multi-functional horizontal-type ring rolling machine |
| 05/30/2013 | US20130136943 Process for producing a rotationally symmetric hollow part and hollow part produced thereby |
| 05/29/2013 | DE102011055666A1 Method for manufacturing semi-finished product with end section, involves subjecting blank to rolling process, and creating molded product in course of rolling process, where end section is provided against adjacent section |
| 05/29/2013 | CN202951810U Improved die for outer ring of rolling tapered roller bearing |
| 05/29/2013 | CN202951809U 冷辗机 Cold Rolling Machine |
| 05/29/2013 | CN202951808U Cold rolling machine cover |
| 05/22/2013 | EP2594348A1 Method of manufacturing door frame for wind tower |
| 05/22/2013 | EP2593250A1 Process for producing a semifinished product |
| 05/22/2013 | EP2593249A1 Process for producing a semifinished product and a semifinished product |
| 05/22/2013 | CN103111564A Precise roll forming method of bimetal tubular part |
| 05/22/2013 | CN103111563A Steel ball continuous rolling method and device |
| 05/22/2013 | CN103111562A Manufacturing method of thick-wall high-drum annular forging |
| 05/22/2013 | CN103111561A Internal deep groove annular piece precision rolling forming method and device |
| 05/22/2013 | CN103111560A Method for rolling and forming GH4169 high-temperature alloy complicated irregular cross section annular part |
| 05/22/2013 | CN103111559A Method for rolling and forming GH536 high-temperature alloy complicated irregular cross section annular part |
| 05/22/2013 | CN103111558A Method for rolling and forming TA15 high-temperature alloy complicated irregular cross section annular part |
| 05/22/2013 | CN103111557A Method for rolling and forming TC25 high-temperature alloy complicated irregular cross section annular part |
| 05/22/2013 | CN102099134B Method and apparatus for producing a circular cylindrical body comprising a workable mass and having internal helical recesses |
| 05/16/2013 | DE102012104413A1 Verfahren zur Herstellung eines rotationssymmetrischen hohlen Teils und danach hergestelltes hohles Teil A process for producing a rotationally symmetrical hollow part, and then made hollow part |
| 05/15/2013 | EP2591866A1 Method for manufacturing a rotationally symmetrical hollow part and hollow part produced according to the method |
| 05/15/2013 | CN103100623A Roll-forming method of TC17 titanium alloy complex deformed section ring unit |
| 05/15/2013 | CN103100622A Roll shaping method of ultrahigh-strength steel complex deformed section annular piece |
| 05/15/2013 | CN103100621A Rolling forming method of constructional steel complex special-shaped section ring-type element |
| 05/15/2013 | CN103100620A Roll-forming method of GH4648 high temperature alloy complex deformed section ring unit |
| 05/15/2013 | CN103100619A Rolling forming method for biphase stainless steel ring piece with complex irregular section |
| 05/15/2013 | CN103100618A Manufacturing method of bearing outer ring |
| 05/15/2013 | CN102861842B Multi-station ring rolling machine |
| 05/15/2013 | CN102240762B Forging and forming process of complex circular forged piece in specific metal flow line |
| 05/08/2013 | EP2588273A1 Machine for deep-rolling axles |
| 05/08/2013 | CN202921842U Inclined plate type uniform-speed mould |
| 05/08/2013 | CN103084520A Accurate roll forming method and device of inner step cylindrical workpiece |
| 05/02/2013 | DE102011117034A1 Vorrichtung und Verfahren zum Herstellen eines Metallrades Apparatus and method for producing a metal wheel |
| 05/01/2013 | CN103071971A Machining method for automotive front axle half shaft |
| 04/24/2013 | CN202901264U Integrated hydraulic tappet plunger piston and mold thereof |
| 04/24/2013 | CN202894157U Phosphor copper ball rolling equipment |
| 04/24/2013 | CN202894156U Bearing inner ring cold mill |
| 04/24/2013 | CN202893814U Ring rolling machine roller for rolling rings with complicated sections |
| 04/24/2013 | CN103062225A Rolling formation method of integral outer ring self-lubricating joint bearing |
| 04/24/2013 | CN103056256A Belt pulley processing method |
| 04/17/2013 | CN103042142A Precise roll forming method for bimetallic rings |
| 04/10/2013 | CN202861287U Bearing inner race rolling device |
| 04/10/2013 | CN103028682A Anti-deflection process method for rolling shell ring |
| 04/10/2013 | CN103028681A Method for distributing rolling reduction of shell ring |
| 03/27/2013 | CN202824184U Fluid immersion cooling device for rotational parts plasticity forming-processing |
| 03/27/2013 | CN103003007A Process for producing a semifinished product |
| 03/27/2013 | CN103003006A Process for producing a semifinished product and a semifinished product |
| 03/27/2013 | CN102989937A High-accuracy internal-expanding-type grinding and forging machine |
| 03/26/2013 | US8402658 Manufacturing method of compressor pulley |
| 03/20/2013 | EP2569115A1 Method and device for producing sealing rings |
| 03/20/2013 | CN202804044U Core roller for ring rolling machine |
| 03/20/2013 | CN102974726A Rolling method of pop-top can pull-tab material |
| 03/07/2013 | US20130056936 Method and device for producing sealing rings |
| 03/06/2013 | CN202762926U Radial-axial ring rolling experiment testing device |
| 03/06/2013 | CN102489639B Fine-grain roll-forming method for large annular piece made of high alloy steel |
| 02/27/2013 | CN202752515U Rotary forging press |
| 02/14/2013 | WO2013020750A1 Method for producing a composite rolling bearing |
| 02/13/2013 | CN202725907U Cold ring-rolling die for outer ring of double-row bearing |
| 02/13/2013 | CN102921847A Method and device for precision-rolling and forming cylindrical part |
| 02/13/2013 | CN102921846A Mold for ring rolling tapered roller bearing outer ring |
| 02/13/2013 | CN101652200B Method for manufacturing a toothed disc and the toothed disc manufactured thereby |
| 02/06/2013 | CN202715749U Rolling bearing chamfer machine tool |
| 02/06/2013 | CN102909535A Method for rolling and forging bearing ring once |
| 01/30/2013 | CN202701276U Tooling of bearing sleeve forged part with hemispherical section |
| 01/30/2013 | CN102896260A Method of forming a frontal toothing on an inner ring of a wheel hub |
| 01/30/2013 | CN102896237A Method of forming a frontal toothing on an inner ring of a wheel hub, upset collar and wheel hub with frontal toothing thus obtained |
| 01/30/2013 | CN102896160A Liquid immersion cooling device for plastic forming of rotational part and process of liquid immersion cooling device |
| 01/24/2013 | WO2013010961A1 Roll for a ring rolling mill |
| 01/23/2013 | CN102892527A Method and device for producing sealing rings |
| 01/23/2013 | CN102886475A Bearing inner ring cold mill |
| 01/23/2013 | CN102886474A Radial rolling device of ring rolling machine |
| 01/23/2013 | CN102886473A Method for determining dimension of ring casting-rolling combined formed blank |
| 01/23/2013 | CN102489638B Radial and axial roll-forming method for large internal-stage annular piece |
| 01/22/2013 | US8356555 Projectile made of steel softened to the core |