| Patents for B23K 13 - Welding by high-frequency current heating (1,807) |
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| 11/04/1992 | CN1065909A Butting device for joining running steel sheets |
| 10/27/1992 | US5158227 Process of making seamless metal tube |
| 10/21/1992 | EP0509462A1 Welding management apparatus |
| 09/16/1992 | EP0503217A2 A process for the continuous manufacture of section members of closed section provided with bilateral perforations and the product thus obtained |
| 07/29/1992 | EP0495993A1 Method and device for joining billets |
| 07/29/1992 | EP0495989A1 Method of joining billets during hot rolling and method of continuous hot rolling |
| 07/29/1992 | EP0495835A1 Process for joining a first metal body to a second |
| 07/01/1992 | EP0492623A1 Process for making an electric-resistance-welded steel pipe with high strength |
| 07/01/1992 | EP0492368A2 Butting device for joining running steel sheets |
| 06/24/1992 | CN2107972U Electrode for high frequency resistance welding of fin tube |
| 06/09/1992 | US5120177 Apparatus for rounding and conveying onwards sheet-metal blanks for can bodies |
| 06/03/1992 | CN1016854B Resistance welding in aluminium |
| 05/12/1992 | US5113049 Flexible induction heating coil |
| 05/12/1992 | CA1300696C High frequency resistance spot welding structure and method |
| 05/12/1992 | CA1300695C Method for welding ribbed pipe |
| 04/16/1992 | WO1992005895A1 Multiple component structural member |
| 04/16/1992 | WO1992005893A1 Interengageable structural members |
| 04/07/1992 | CA1298625C Structure and method for resistance welding with an inductively coupledpower source |
| 03/25/1992 | CN1059674A Connecting process and continuous hot-rolling process for billet in hot-rolling |
| 03/18/1992 | CN1059489A Method for joining steel plates and apparatus therefor |
| 02/03/1992 | WO1992002315A1 Method of joining billets during hot rolling and method of continuous hot rolling |
| 02/03/1992 | WO1992002313A1 Method and device for joining billets |
| 12/31/1991 | US5076332 Arch geometry to eliminate tubing influence on load cell accuracy |
| 12/11/1991 | EP0460901A2 Surfacing a convex substrate |
| 12/11/1991 | EP0460900A2 Forming composite materials |
| 12/07/1991 | CA2043739A1 Forming composite materials |
| 12/05/1991 | DE4017634A1 Continuously welding tube from coiled strip - by passing through shaping rollers induction heaters to pre-heat butting edges and finally welding with burner |
| 09/04/1991 | EP0445035A1 Friction welding method |
| 07/24/1991 | CN1013253B Special metal pipe impact extrusion thermal diffusion welding technology |
| 07/10/1991 | EP0208708B1 A method for heating metal elements to be joined |
| 06/05/1991 | CN1051875A Apparatus for rounding and conveying onwards sheet-metal blanks for can bodies |
| 05/21/1991 | CA1284358C Process for making wire mesh screens |
| 05/02/1991 | WO1991005628A1 Process for joining a first metal body to a second |
| 04/25/1991 | DE3934659A1 Verfahren zum verbinden eines ersten metallischen koerpers mit einem zweiten metallischen koerper A method for connecting a first metal body with a second metallic body |
| 04/09/1991 | US5005395 Method of manufacturing electric welded pipes under hot conditions |
| 03/21/1991 | WO1991003830A1 Multi-element metallic composite article and method of manufacture |
| 03/20/1991 | CN1012045B Brazing method of end surface of internal combustion engine exhaust valve bar |
| 03/19/1991 | US5001319 Arrangement for continuous induction welding |
| 02/27/1991 | EP0413955A2 Device for rounding and conveying on sheet blanks for can shells |
| 02/05/1991 | CA1279905C Induction heating pressure welding with linear bus bar joint |
| 02/05/1991 | CA1279904C Dual induction heating pressure welding control circuit |
| 02/05/1991 | CA1279903C Inert atmosphere control for induction heated pressure welding system |
| 12/25/1990 | US4980245 Multi-element metallic composite article |
| 10/31/1990 | DE3913897A1 Prodn. of thick-walled welded steel tubes - using two coils to heat edges up to welding temp. with first coil lying in welding direction |
| 09/19/1990 | EP0387512A1 An arrangement for continuous induction welding |
| 08/07/1990 | US4947462 Induction welding apparatus and method |
| 08/07/1990 | US4945743 Apparatus for manufacturing electric welded pipes under hot conditions |
| 05/16/1990 | CN1042105A Brazing method of end surface of internal combustion engine exhaust valve bar |
| 05/09/1990 | CN1041900A Special metal pipe impact extrusion-thermal diffusion welding technology |
| 05/01/1990 | US4921568 Moving head high frequency resistance welding system |
| 04/10/1990 | US4916278 Severing metal strip with high frequency electrical current |
| 03/14/1990 | EP0357910A2 Superconductive elongate material made of a coated corrugated metal pipe |
| 03/06/1990 | US4906805 Method and apparatus for high frequency electrical cast welding and surface hardening |
| 02/06/1990 | CA1265587A1 Induction heated pressure welding |
| 09/12/1989 | US4864706 Fabrication of dual alloy integrally bladed rotors |
| 07/04/1989 | US4845326 Apparatus and method for electrically butt welding of skelp edge faces which have been preheated |
| 05/23/1989 | CA1254626A1 Contact wire for a roller seam welding machine and method for welding sheets together |
| 05/16/1989 | US4831229 High frequency resistance spot welding structure and method |
| 05/09/1989 | CA1253924A1 Method for heating metal elements to be joined |
| 05/03/1989 | EP0163654B1 Apparatus and method for fusing battery terminals |
| 04/18/1989 | US4821944 Method for bonding a wire and bonding apparatus |
| 04/11/1989 | US4820896 Method and apparatus producing drawn copper wire from an electrical seam welder |
| 04/04/1989 | US4817278 Side terminal connection by fusing |
| 02/14/1989 | US4804819 Structure and method for resistance welding with an inductively coupled power source |
| 01/10/1989 | US4796798 Method of and apparatus for continuous production of seam-welded metal tubing |
| 01/04/1989 | CN2030128U Automatic control equipment for high-frequency welding of tube |
| 01/03/1989 | US4795875 Contact wire for a roller seam welding machine |
| 11/30/1988 | CN88102893A Resistance welding in aluminium |
| 11/22/1988 | CA1245298A1 High-frequency electric resistance welding method using irradiation with a laser beam |
| 11/17/1988 | EP0290495A1 Arrangement in connection with induction heating |
| 11/15/1988 | CA1244892A1 Method permitting multiple uses of a copper wire employed as the electrode in electrical resistance seam welding and apparatus therefor |
| 09/28/1988 | EP0284141A2 Method of and device for producing thin-walled tubes |
| 09/20/1988 | US4771931 Continuous production of seam-welded metal tubing |
| 08/16/1988 | US4763830 Method for welding ribbed pipe |
| 07/06/1988 | EP0273312A2 Method for welding ribbed pipe |
| 06/02/1988 | WO1988003853A1 Arrangement in connection with induction heating |
| 04/26/1988 | US4740665 Apparatus for automatically controlling heat input by high frequency power source for welding |
| 04/05/1988 | US4736084 Method and apparatus for heating opposing surfaces of two elements to be joined |
| 03/30/1988 | EP0261237A1 High frequency welding system |
| 03/29/1988 | US4734552 Induction heated pressure welding |
| 03/01/1988 | CA1233529A1 Apparatus and method for fusing battery terminals |
| 02/09/1988 | CA1232433A1 Method for reshaping a gas turbine engine combustor part |
| 01/13/1988 | EP0138887B1 Method for reshaping a gas turbine engine combustor part |
| 01/05/1988 | US4717801 Dual induction heating pressure welding apparatus having a control circuit |
| 12/22/1987 | US4714808 Induction heating pressure welding with linear bus bar joint |
| 11/17/1987 | US4706871 Method of continuously hot-rolling steel pieces |
| 11/04/1987 | EP0243533A1 Method for maufacturing welded pipes |
| 10/27/1987 | US4703158 High frequency welding system |
| 10/08/1987 | WO1987005841A1 High frequency welding system |
| 09/17/1987 | DE3608120A1 Bodies of thin-walled, aluminium-containing stainless steel |
| 09/15/1987 | US4694134 Apparatus for overheating edges of skelp for the production of compression welded pipe |
| 09/01/1987 | CA1226338A1 Apparatus and method for fusing battery terminals |
| 08/18/1987 | US4687892 Inert atmosphere control for induction heated pressure welding system |
| 04/28/1987 | US4660754 Process of forming welded tubing |
| 03/24/1987 | US4651915 Mobile pipe mill |
| 03/24/1987 | US4651914 Mobile pipe mill |
| 03/10/1987 | US4649256 High-frequency electric resistance welding method using irradiation with a laser beam |
| 01/21/1987 | EP0208708A1 A method for heating metal elements to be joined. |
| 01/07/1987 | EP0207361A1 Contact wire for a roller seam welding machine |
| 11/04/1986 | US4621176 Method of and device for monitoring and/or controlling welding current in the high-frequency resistance pressure welding of pipes with longitudinal seams |