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1. 发明公开

EP4245404A1 METHOD AND APPARATUS FOR MIXING FLUIDS IN LOW CONCENTRATIONS 审中-公开
公开(公告)号：EP4245404A1
公开(公告)日：2023-09-20
申请号：EP22020111.5
申请日：2022-03-15
申请人： Linde GmbH
发明人： Hussary, Nakhleh A. , Fehrenbach, Lukas , Bern, Robert , Wagner, Richard Andreas
IPC分类号： B01F23/00 , B01F23/10 , B01F25/452 , B01F25/421
摘要： The invention relates to a method of mixing at least a first fluid (1) and a second fluid (2) with one another, the method comprising providing the first fluid (1) in a desired first amount to a mixing vessel (130) having a first volume, providing the second fluid (2) in a desired second amount to the mixing vessel (130), affording a mixed fluid (3) and flowing the mixed fluid (3) through a homogenizer (140) comprising a buffer vessel (142) with a second volume and a filling (144) within the buffer vessel (142), thereby thoroughly mixing the first (1) and second (2) fluids with one another to afford a homogenized mixed fluid (4). The invention further provides an apparatus (100) for performing such a method and a homogenizer (140) for such an apparatus (100).

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.

4. 发明公开

EP4242778A1 MIXING IMPROVEMENT THROUGH GAS VENT 审中-公开
公开(公告)号：EP4242778A1
公开(公告)日：2023-09-13
申请号：EP22020103.2
申请日：2022-03-11
申请人： Linde GmbH
发明人： Hussary, Nakhleh A. , Bern, Robert
IPC分类号： G05D11/13 , B01F23/00
摘要： The present application relates to a system (1) for mixing gases (G1, G2, ...) to provide a gas mixture (G) comprised of said gases (G1, G2, ...), wherein the system (1) comprises: a mixer (2) comprising an outlet (3), the mixer (2) being configured to mix the gases (G1, G2, ...) to provide the gas mixture (G) at the outlet (3) of the mixer (2), a gas line (4) for passing the gas mixture (G) to a process (5) or a storage tank (6), a vent (8) for venting a portion of the gas mixture (G), a valve (7) connected to the outlet (3), wherein the valve (7) comprises an actuator (70) configured to bring the valve (7) into a first state in which the outlet (3) of the mixer (2) is connected to the gas line (4) via the valve (7) so as to pass the gas mixture (G) from the outlet (3) of the mixer (2) via the valve (7) into the gas line (4) to said process (5) or said storage tank (6), and wherein the actuator (70) is configured to bring the valve (7) into a second state in which the outlet (3) is disconnected from the gas line (4) and connected to the vent (8) via the valve (7) to discharge a portion of the gas mixture (G) via the valve (7) through the vent (8), and a control unit (20) configured to control the actuator (70) to maintain the valve (7) in the second state over a venting time period during a starting phase of said mixing of said gases (G1, G2, ...) for discharging the gas mixture (G) through the vent (8) until a stable gas mixture (G) is reached by the mixer (2).

5. 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.

6. 发明公开

EP4223444A1 MULTI WIRE FEED GMAW 审中-公开
公开(公告)号：EP4223444A1
公开(公告)日：2023-08-09
申请号：EP22020034.9
申请日：2022-02-04
申请人： Linde GmbH
发明人： Siewert, Erwan , Hussary, Nakhleh A.
IPC分类号： B23K9/173 , B23K9/12 , B23K9/14
摘要： The present invention relates to a welding apparatus (1), comprising: a first wire (2) comprising an end section (2a) extending along a first direction (D1), the end section of the first wire comprising a tip (2b), a second wire (3) comprising an end section (3a) extending along a second direction (D2), the end section of the second wire (3) comprising a tip (3b) and being electrically insulated from the first wire (2), a power supply (4) electrically connectable by the welding apparatus (1) to the first wire (2) to generate an electrical current through the tip (2b) of the first wire (2) that generates an arc (5) between the tip (2b) of the first wire (2) and at least one workpiece (6) to be welded so as to cause transfer of material of the end section (2a) of the first wire (2) to the at least one workpiece (6), the second wire (3) being electrically insulated from the power supply (4) and the first wire (2), a first wire feed unit (20) configured to feed the first wire (2) into a weld pool (50) on the at least one workpiece (6) in the first direction (D1) with a first wire feed speed (v1), and a second wire feed unit (30) configured to feed the second wire (3) into the weld pool (50) in the second direction (D2) with a second wire feed speed (v2), wherein the first direction (D1) and the second direction (D2) run at an angle (α) to each other that is in the range from 0° to 25°.

7. 发明公开

EP3672376A1 INTELLIGENT PREFLOW-PLASMA GAS CONTROL 审中-公开
公开(公告)号：EP3672376A1
公开(公告)日：2020-06-24
申请号：EP19020041.0
申请日：2019-01-22
申请人： Linde GmbH
发明人： Hussary, Nakhleh A.
IPC分类号： H05H1/34 , B23K10/00
摘要： The present invention relates to a method for plasma cutting a workpiece using a plasma cutting torch comprising an electrode and a nozzle coaxially surrounding the electrode thereby defining a passage for passing of a gas flow between the electrode and the nozzle for generating a plasma arc, wherein upon a starting phase ([T0, Te]) of plasma cutting a workpiece a voltage (V NE ) between the nozzle and the electrode is acquired, wherein said voltage (V NE ) is monitored in order to detect a plasma arc instability corresponding to at least one or multiple peaks (P) in said voltage (V NE ) during said starting phase ([T0, Te]). In case a plasma arc instability is detected, at least one process parameter is adjusted to reduce said instability in a succeeding starting phase ([T0, Te]).

8. 发明公开

EP4289546A1 AUTOMATED ONLINE MONITORING OF GAS QUALITY 审中-公开
公开(公告)号：EP4289546A1
公开(公告)日：2023-12-13
申请号：EP22020264.2
申请日：2022-06-08
申请人： Linde GmbH
发明人： Hussary, Nakhleh A. , Bern, Robert
IPC分类号： B23K31/02 , B23K26/14 , B23K10/00 , B23K9/32 , B23K26/12 , G01N33/00 , B23K9/16
摘要： The present invention relates to a system (1)for automated analysis of a gas (G) at full operating gas volume during a joining or cutting process, comprising: a gas analyzing unit (4), a torch (2) for conducting the joining or cutting process, the torch (2) comprising a gas nozzle (3) being configured to discharge said gas, the torch (2) being further configured to discharge the gas (G) during said joining or cutting process at said operating gas volume flow, wherein the torch (2) comprises a conduit (46) to extract at least a partial stream of said gas (G) from the gas nozzle (3), said conduit being configured to be connected to the gas analyzing unit (4) to provide a flow connection between the torch (2) and the gas analyzing unit (4) to allow passing of said extracted gas (G) to the gas analyzing unit (4).

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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