| Patents for B23K 13 - Welding by high-frequency current heating (1,807) |
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| 02/11/2003 | CA2255463C Method and apparatus for joining metal pieces |
| 02/11/2003 | CA2255442C Method and apparatus for joining metal pieces |
| 02/05/2003 | CN1100641C Apparatus for amorphous bonding of tubulars |
| 01/23/2003 | US20030015570 Method of joining different metal materials by friction welding |
| 01/22/2003 | EP1276570A2 Hydroforming a tubular structure of varying diameter from a tubular blank using electromagnetic pulse welding |
| 01/22/2003 | CN1392026A Extruding roll sweeping mechanism for rolling butt welding steel tube |
| 01/21/2003 | US6509555 Hand held induction tool |
| 01/15/2003 | CN1390675A Extrude roller unit devices of roll welded steel pipes |
| 01/15/2003 | CN1390674A Manufacturing devices of roll welded steel pipes and methods thereof |
| 01/02/2003 | EP1270137A1 Squeeze roll cleaning mechanism |
| 01/02/2003 | EP1270100A2 Electro-resistance-welded tube manufacturing apparatus and method |
| 01/02/2003 | EP1270099A2 Squeeze roll unit for the manufacture of electro-resistance-welded tube |
| 12/26/2002 | US20020195477 Squeeze roll cleaning mechanism |
| 12/19/2002 | US20020190095 Electro-resistance-welded tube squeeze roll unit |
| 12/19/2002 | US20020190094 Electro-resistance-welded tube manufacturing apparatus and method |
| 12/19/2002 | US20020189726 Impacting the machined braking surface with ultrasonic oscillations, smoothing and hardening the braking surface to produce a longer wearing and stronger surface |
| 12/18/2002 | CN1385274A Method for welding hood and plate |
| 12/18/2002 | CN1096328C Producing method and preparing equipment for steel pipe |
| 12/11/2002 | CN2524877Y Medium and high frequency fast electric iron |
| 12/10/2002 | CA2256995C A system for continuous hot rolling |
| 12/04/2002 | EP1262269A1 Method for performing a magnetic pulse welding operation using a plurality of magnetic inductors |
| 12/04/2002 | CN2523550Y Special high frequency welder for ellipsoidal ribs |
| 11/28/2002 | DE10222590A1 Discharge protection device used for electronic high frequency welding devices comprises an oscillator circuit, a blocking unit acting on a grid of the triode, a control unit connected to a sensor |
| 11/27/2002 | CN1094743C Electromagnetism heating metal plate and its manufacturing method |
| 11/05/2002 | US6474534 Hydroforming a tubular structure of varying diameter from a tubular blank made using electromagnetic pulse welding |
| 10/30/2002 | EP1252959A2 Welded tube internal surface bead cutting apparatus |
| 10/30/2002 | CN2518634Y Instantaneous liquid phase diffusion welding machine |
| 10/29/2002 | CA2265297C Method and apparatus for welding |
| 10/24/2002 | WO1998022266A3 Fibrous sheet material |
| 10/24/2002 | US20020153355 Welded tube internal surface bead cutting apparatus, chip processing method and apparatus, and weld spatter processing apparatus |
| 10/23/2002 | EP1250967A2 A metal block joining apparatus |
| 10/02/2002 | CN1372501A Method and device for joining support matrix of honeycomb on the end face using bonding technology |
| 10/01/2002 | US6458225 Ultrasonic machining and reconfiguration of braking surfaces |
| 09/05/2002 | US20020121511 Method of magnetic pulse welding an end fitting to a driveshaft tube of a vehicular driveshaft |
| 09/04/2002 | EP1222050A4 Method and apparatus for coating the seams of welded tubes |
| 08/29/2002 | US20020116816 Method and apparatus for the end-surface connection of a carrier matrix of a honeycomb body by a joining technique |
| 08/28/2002 | CN1365870A Induction friction welding method |
| 08/27/2002 | US6438838 Method for repairing and producing integrally bladed rotors for a turbine or turbo engine |
| 08/21/2002 | CN2506384Y Intermediate frequency induction coil used in right angle butt welding machine for flat copper wire |
| 07/31/2002 | EP1226742A2 Hand held induction tool |
| 07/24/2002 | EP1224841A1 Conformable loop induction heating apparatus and method for accelerated curing of bonded members |
| 07/23/2002 | US6423943 Connecting clamp, connecting apparatus and connecting method |
| 07/17/2002 | EP1222050A1 Method and apparatus for coating the seams of welded tubes |
| 07/17/2002 | EP1222049A1 Method and device for joining a support matrix of a honeycomb on the end face using bonding technology |
| 07/16/2002 | US6420686 Apparatus for joining metal components |
| 07/10/2002 | CN1357426A Friction welding process of jointing different metal material |
| 06/12/2002 | EP1213087A2 Method of joining different metal materials by friction welding |
| 05/29/2002 | CN2493327Y Welding stainless steel composite pipe |
| 05/15/2002 | CN2491171Y Double-roll automatic sizing device |
| 05/08/2002 | CN1347771A Metal shell making process |
| 04/30/2002 | US6380516 Connecting clamp, connecting apparatus and connecting method |
| 04/30/2002 | US6379254 End fitting adapted to be secured to driveshaft tube by electromagnetic pulse welding |
| 04/25/2002 | US20020047000 Method and apparatus for receiving a universal input voltage in a welding, plasma or heating power source |
| 04/25/2002 | DE10047492A1 Welding metallic work material with inductive preheating has conventional welding tools like arc welders or roller electrodes coupled with inductor(s) with inductor power of 15 to 30 kW |
| 04/24/2002 | EP1198324A1 Method for assembling metal parts with an induction-heated metallic powder |
| 04/24/2002 | EP0691163B1 Method of and apparatus for joining metal pieces |
| 04/18/2002 | US20020043313 Utilizing and benefitting from the energy of pulses, oscillations and impacts on an exterior surface of a solid work product to rearrange the interior product structure, typically by accompanying plstic deformation; |
| 04/16/2002 | US6373017 Continuous hot rolling mill with metal block conveying apparatus |
| 04/10/2002 | CN1082412C Input heat-quantity automatic control system and method for high-frequency resistance welding device |
| 04/02/2002 | CA2260180C Sheet bar joining apparatus |
| 03/05/2002 | US6351978 Roller mount with three-axis freedom |
| 02/21/2002 | US20020020733 Method of joining different metal materials by friction welding |
| 02/13/2002 | EP1178867A4 Improved method of solid state welding and welded parts |
| 02/13/2002 | EP1178867A1 Improved method of solid state welding and welded parts |
| 02/12/2002 | US6345756 Defectively joined portion removal apparatus for use in a continuous hot rolling process |
| 02/07/2002 | WO2001081021A3 Hydroforming a tubular structure of varying diameter from a tubular blank using electromagnetic pulse welding |
| 01/30/2002 | CN2474261Y D.C. tungsten electrode argon arc welding machine program control and high frequency arc striking circuit |
| 01/17/2002 | US20020005399 Connecting clamp, connecting apparatus and connecting method |
| 01/17/2002 | US20020005394 Heating apparatus for a welding operation and method therefor |
| 01/15/2002 | US6338765 To relax residual stresses for higher fatigue strength and load bearing capacity;. |
| 01/10/2002 | US20020003159 Hydroforming a tubular structure of varying diameter from a tubular blank made using electromagnetic pulse welding |
| 01/09/2002 | CN1329953A Technology for manufacturing tubular body of load-bearing frame for chair |
| 01/02/2002 | EP1166910A1 Apparatus and method for manufacturing hollow shafts |
| 12/27/2001 | WO2001097994A1 Apparatus and method for manufacturing hollow shafts |
| 12/20/2001 | US20010052520 Conformable loop induction heating apparatus and method for accelerated curing of bonded members |
| 12/13/2001 | WO2001095132A1 Gap welding process |
| 12/13/2001 | WO2001033909A3 Hand held induction tool |
| 12/13/2001 | CA2413918A1 Gap welding process |
| 12/11/2001 | US6329636 Method and apparatus for receiving a universal input voltage in a welding plasma or heating power source |
| 12/06/2001 | WO2001093641A1 Induction heating of rail welds |
| 12/06/2001 | CA2411005A1 Induction heating of rail welds |
| 11/22/2001 | WO2001087531A1 Liquid phase diffusion welded metal-made precision machine component and production method thereof |
| 11/14/2001 | CN2459133Y Frequency change fusion welding machine |
| 11/07/2001 | CN1320502A Method and apapratus for receiving universal input voltage in welding, plasma or heating power supply apparatus |
| 11/06/2001 | CA2092809C Multiple component structural member |
| 11/01/2001 | WO2001081021A2 Hydroforming a tubular structure of varying diameter from a tubular blank using electromagnetic pulse welding |
| 10/31/2001 | EP1036487B1 Heating device and method for inductive heat treatment |
| 10/17/2001 | CN1072987C Steel-band continuously hot final rolling method and appts. thereof |
| 10/10/2001 | EP1140417A1 Blade and rotor for a gas turbine and method for linking blade parts |
| 10/10/2001 | CN2452668Y Double guiding rod and up-adjusting type high frequency heating and pressing soldering apparatus |
| 10/04/2001 | US20010025847 Method and apparatus for welding |
| 10/04/2001 | EP1138429A2 A welding, plasma or heating power source |
| 10/03/2001 | CN2451282Y Contactor for high frequency contact welding |
| 10/02/2001 | US6297474 Heating apparatus for a welding operation and method therefor |
| 10/02/2001 | CA2255417C Method for joining metal pieces |
| 09/26/2001 | CN1071603C Sheet bar joining apparatus |
| 09/18/2001 | US6290786 Method and apparatus for coating the seams of welded tubes |
| 09/12/2001 | EP0661112B1 Method and apparatus for continuous hot rolling of metal pieces |
| 09/11/2001 | US6288375 Conformable loop induction heating apparatus and method for accelerated curing of bonded members |
| 08/22/2001 | CN1309009A Alloy welding method for end face at smaller end of air valve |