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1. 发明公开

EP3981544A1 PLUS POLE ELECTRODE 审中-公开
公开(公告)号：EP3981544A1
公开(公告)日：2022-04-13
申请号：EP20020466.7
申请日：2020-10-08
申请人： Linde GmbH
发明人： Siewert, Erwan , Hussary, Nakhleh A.
IPC分类号： B23K35/02 , H05H1/34 , B23K35/40
摘要： The present invention relates to an electrode (1) for plus pole welding, particularly TIG welding, comprising: a base body (10) having a face side (11) and extending along a central longitudinal axis (z) of the electrode (1), and a tapered emissive element (20) connected to the face side (11) of the base body (10) and forming a tip of the electrode (1). According to the present invention, the base body (10) comprises silver (Ag), and/or the face side (11) of the base body (10) comprises a protrusion (12) that is arranged in a form-fitting manner in a recess (21) of the emissive element (20), or the emissive element comprises a protrusion that is arranged in a form-fitting manner in a recess of the face side of the base body.

2. 发明公开

EP3808490A1 LOW EMISSION SHIELDING GAS FOR STAINLESS STEEL WELDING 审中-公开
公开(公告)号：EP3808490A1
公开(公告)日：2021-04-21
申请号：EP19020579.9
申请日：2019-10-16
申请人： Linde GmbH
发明人： Siewert, Erwan , Hussary, Nakhleh A. , Pfreuntner, Tobias
IPC分类号： B23K9/167 , B23K10/02 , B23K35/38
摘要： The present invention relates to a shielding gas (G) for welding, comprising:
Argon, hydrogen, and helium, wherein the hydrogen content is in the range from 4 vol.-% to 5 vol.-%, and wherein the helium content is in the range from 30 vol.-% to 40 vol.-%.

3. 发明授权

EP2857141B1 VERFAHREN ZUM METALLSCHUTZGASSCHWEISSEN 有权转让
公开(公告)号：EP2857141B1
公开(公告)日：2020-12-02
申请号：EP13006027.0
申请日：2013-12-20
申请人： Linde GmbH
发明人： Siewert, Erwan
IPC分类号： B23K35/30 , B23K9/173 , B23K35/02

4. 发明公开

EP4272892A1 GMAW TORCH COMPRISING TWO CURRENT CONTACT NOZZLES AND CORRESPONDING CURRENT ROUTING 审中-公开
公开(公告)号：EP4272892A1
公开(公告)日：2023-11-08
申请号：EP22020207.1
申请日：2022-05-05
申请人： Linde GmbH
发明人： Siewert, Erwan , Eichler, Stefan
IPC分类号： B23K9/10 , B23K9/12 , B23K9/173 , B23K9/28
摘要： The present invention relates to a welding device (1) for gas metal arc welding, comprising a torch (2), the torch (2) comprising a first current contact point (3) and an opposing second current contact point (4), the torch (2) being configured to pass a wire-shaped filler material (5) along the current contact points (3, 4) so that the wire-shaped filler material (5) electrically contacts the respective current contact point (3, 4), the torch (2) being further configured to generate an arc (6) between the filler material (5) passed past the second current contact point (4) and a workpiece (7), a first and a second lead (8, 9), the first lead (8) being electrically connected to the first current contact point (3), the second lead (9) being electrically connected to the second current contact point (4), the leads (8, 9) being configured to be connected to an electric power supply (10) so that a section (5a) of the filler material (5) extending between the two current contact points (3, 4) is heated by resistance heating when an electrical voltage is applied to the leads (8, 9) by the power supply (10) and generates an electrical current in said section (5a), and a control unit (14) configured to control a heating power corresponding to a product of an electrical heating current between the current contact points (3, 4) and a voltage between the current contact points (3, 4) and/or a power corresponding to a product of an electrical welding current between the second current contact point (4) and the workpiece (7) and an arc voltage between the second current contact point (4) and the workpiece (7).

5. 发明公开

EP4151350A1 TRAILING GAS NOZZLE WITH INTEGRATED COOLING 无效
公开(公告)号：EP4151350A1
公开(公告)日：2023-03-22
申请号：EP21020465.7
申请日：2021-09-16
申请人： Linde GmbH
发明人： Siewert, Erwan , Pfreuntner, Michael
IPC分类号： B23K9/16 , B23K9/29 , B23K9/32
摘要： The present invention relates to a gas shielding apparatus (1) for a welding torch (100), comprising: an elongated body (10) comprising an internal space (12) for receiving a shielding gas (S), and an elongated discharge area (11) on a bottom side of the body (10) for discharging the shielding gas (S) onto a weld seam (2a), and a plurality of gas distributors (13) arranged in the internal space (12), each gas distributor (13) being configured to distribute the shielding gas (S) into the internal space (12) so that the shielding gas (S) is discharged out of the gas shielding apparatus (1) through said discharge area (11). According to the present invention, the gas shielding apparatus (1) further comprises a plurality of separate cooling nozzles (20) arranged in the internal space (12), each cooling nozzle (20) being configured to discharge a cooling medium (C) onto the weld seam (2a).

6. 发明公开

EP3819062A1 PLASMA ARC TORCH CONSUMABLE HOLDER 审中-公开
公开(公告)号：EP3819062A1
公开(公告)日：2021-05-12
申请号：EP19020626.8
申请日：2019-11-11
申请人： Linde GmbH
发明人： Siewert, Erwan , Hussary, Nakhleh A. , Wagner, Richard Andreas
IPC分类号： B23K10/02 , H05H1/34
摘要： A consumables holder assembly (3) for a plasma arc torch having a torch head(2), the consumables holder assembly (3) comprising a main body(4), a shielding cup (5) which engages to the main body (4), a connection means (12) which engages the main body (4) to the torch head (2) and consumable components including an electrode (6), a nozzle (7), a plasma gas distributor (8), a shielding gas distributor (9) which are all positioned inside the shielding cup (5), wherein that the consumable holder assembly (3) can be detached from the torch head (2) together with the consumable components and the shielding cup (5) as one unit, wherein the connection means (12) comprises a mechanical attachment mechanism which is engageable with the torch head (2) and wherein a compression member (27) is provided between the connection means (12) and the main body (4) which allows the connection means (12) to keep moving proximally via the mechanical attachment mechanism, when the electrode (2) engages the torch head (2) initiating the contact and the rest parts of the consumables holder assembly axially stay in place.

7. 发明公开

EP3819060A1 SCHWEISSEINRICHTUNG UND VERFAHREN ZUM AUSRICHTEN EINES NICHTROTATIONSSYMMETRISCHEN LICHTBOGENS 无效
公开(公告)号：EP3819060A1
公开(公告)日：2021-05-12
申请号：EP20020373.5
申请日：2020-08-17
申请人： Linde GmbH
发明人： Siewert, Erwan
IPC分类号： B23K9/16 , B23K9/29 , B23K10/00 , B23K10/02 , H05H1/34 , B23K9/127
摘要： Die Erfindung betrifft eine Schweißeinrichtung (1), mit: einem Schweißbrenner (2), der dazu konfiguriert ist, einen nicht rotationssymmetrischen Lichtbogen (L) zu erzeugen, und mit einem auf dem Schweißbrenner (2) angeordneten Linienlaser (3), der dazu konfiguriert ist, zum Anzeigen einer Orientierung des Lichtbogens (L) beim Schweißen eine Laserlinie (30) auf zumindest einer Werkstückoberfläche (31) zu erzeugen. Weiterhin betrifft die Erfindung ein Verfahren zum Ausrichten eines Lichtbogens.

8. 发明公开

EP4219055A1 CURRENT CONTACT NOZZLE WITH POINT CURRENT TRANSFER 无效
公开(公告)号：EP4219055A1
公开(公告)日：2023-08-02
申请号：EP22020025.7
申请日：2022-01-28
申请人： Linde GmbH
发明人： Siewert, Erwan , Eichler, Stefan
IPC分类号： B23K9/12 , B23K9/173
摘要： The present invention A current contact nozzle (1) for a welding torch (100), comprising a sleeve member (10) comprising a through-opening (11) for receiving a welding wire (2), the through-opening (11) being surrounded by an inner side (10a) of the sleeve member (10), an electrical contact member (12) arranged on the inner side (10a) of the sleeve member (10), the electrical contact member (12) being configured to electrically contact the welding wire (2), a pressing element (13) being configured to mechanically contact the welding wire (2), and a spring member (14) configured to press the pressing element (13) against the welding wire (2) and therewith the welding wire (2) against the electrical contact member (12).

9. 发明公开

EP4086028A1 PROCEDURE FOR CLEANING OF ALUMINIUM SURFACES AND DETERMINATION OF THE DEGREE OF CLEANING 无效
公开(公告)号：EP4086028A1
公开(公告)日：2022-11-09
申请号：EP21020246.1
申请日：2021-05-03
申请人： Linde GmbH
发明人： Siewert, Erwan , Hussary, Nakhleh A. , Fehrenbach, Lukas
IPC分类号： B23K9/095 , B08B7/00 , B23K9/235 , B23K10/00 , B23K103/10
摘要： The present invention relates to a method for cleaning of a surface (8a) of at least one workpiece (8) made out of an aluminium alloy, comprising the steps of: generating an electric arc (3) or a plasma jet (3) by means of a torch (2), applying the electric arc (3) or the plasma jet (3) to the surface (8a), and moving the torch (2) and the at least one workpiece (8) relative to one another to clean the surface (8a) by evaporating impurities (9) of the surface (8a) using the electric arc (3) or plasma jet (3), and e.g. detecting light (L) coming from the electric arc (3) or plasma jet (3) by means of an optical sensor (4), wherein the optical sensor (4) generates an output signal indicative of the presence of impurities (9) of the surface (8a) evaporated by the electric arc (3) or by the plasma jet (3).

10. 发明公开

EP3981535A1 SHIELD NOZZLES FOR CATHODIC CLEANING OF MATERIALS AND FOR T-JOINT WELDING 审中-公开
公开(公告)号：EP3981535A1
公开(公告)日：2022-04-13
申请号：EP20020465.9
申请日：2020-10-08
申请人： Linde GmbH
发明人： Siewert, Erwan , Hussary, Nakhleh A. , Fehrenbach, Lukas , Pfreuntner, Tobias
IPC分类号： B23K9/00 , B08B7/00 , B23K9/167 , B23K9/29
摘要： The present invention relates to a welding torch (10), comprising an electrode (12) extending along a centre axis (60), and a circumferential shield (20) which surrounds the electrode (12) and which is coaxially arranged with respect to the electrode (12), wherein the shield (20) comprises a circumferential edge region (22) that delimits an orifice (24) of the welding torch (10) through which a shield gas can be directed onto a work piece (40). According to the present invention, the shield (20) comprises at least a first recess (30) delimited by a section (32) of the edge region (22). Furthermore, the present invention relates to a method using such a welding torch (10).

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