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公开(公告)号：US20230041636A1
公开(公告)日：2023-02-09
申请号：US17392894
申请日：2021-08-03
申请人： Caterpillar Inc.
摘要： A robotic welder includes one or more motors, one or more articulating arms connected to the one or more motors, one or more sensors configured to image a wear plate for determining welding locations for welding the wear plate to a blade of a machine, and an orbital welder to rotate a torch head for welding the wear plate to the blade.
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公开(公告)号：US11571765B2
公开(公告)日：2023-02-07
申请号：US16256387
申请日：2019-01-24
发明人： Bernard Hunold
IPC分类号： B23K20/00 , B23K20/12 , F16D1/068 , F16C3/02 , B23K9/00 , B23K9/028 , F16H37/04 , F16H3/093 , F16H57/00 , F16H3/095
摘要： A transmission shaft of a countershaft-type manual transmission is constructed from a plurality of hollow shaft portions which are butt press welded to one another, at least two of which hollow shaft portions are provided in each instance with at least one helical toothing of a fixed wheel of a spur gear stage. The hollow shaft portions provided with a helical toothing are connected to the respective adjacent hollow shaft portion in each instance so as to be rotated by a correction angle (Δα) around their center axis in proportion to a deviation (Δx) from their axial target position, wherein the ratio between the correction angle (Δα) and the axial deviation (Δx) corresponds to the pitch (s) of the helical toothing (Δα/Δx=s).
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公开(公告)号：US11554437B2
公开(公告)日：2023-01-17
申请号：US16890048
申请日：2020-06-02
发明人： Richard Jeffrey Schmidt , Junior Grant Parrish , Ronald Francis Konopacki , Russell O'Daniel Brumfield
IPC分类号： B23K9/00 , B23K9/10 , B23K9/028 , B23K9/095 , B23K9/127 , B25J15/00 , B25J15/04 , B23K101/06
摘要： A system for manufacturing boiler tubes includes a first spindle for receiving a first tube having a first weld preparation, a second spindle for receiving a second tube having a second weld preparation, the first spindle and the second spindle being rotatable synchronously, and a welding device having a first weld head. The welding device is configured to automatically weld the first tube to the second tube according to a control routine stored in memory to produce a boiler tube.
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公开(公告)号：US20220324066A1
公开(公告)日：2022-10-13
申请号：US17847715
申请日：2022-06-23
发明人： Frank A. ARGENTINE
摘要： Properties and performance of weld material between metals in a weldment is controlled by modifying one or more of the nitrogen content and the carbon content to produce carbide (e.g. MC-type), nitride and/or complex carbide/nitride (e.g. MX-type) type precipitates. Fusion welding includes (i) adjusting shield gas composition to increase nitrogen/carbon gas and nitride/carbide species, (ii) adjusting composition of nitrogen/carbon in materials that participate in molten welding processes, (iii) direct addition of nitrides/carbides (e.g. powder form), controlled addition of nitride/carbide forming elements (e.g. Ti, Al), or addition of elements that increase/impede solubility of nitrogen/carbon or nitride/carbide promoting elements (e.g. Mn), and (iv) other processes, such as use of fluxes and additive materials. Weld materials have improved resistance to different cracking mechanisms (e.g., hot cracking mechanisms and solid state cracking mechanisms) and improved tensile related mechanical properties.
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公开(公告)号：US11370049B2
公开(公告)日：2022-06-28
申请号：US16672192
申请日：2019-11-01
发明人： John H. Stevens , Redd H. Smith , James Andy Oxford , Jose Ramirez , Nathan David Ames , Shuchi Khurana
IPC分类号： B23K9/02 , B23K26/32 , B23K35/02 , B23K9/028 , B23K9/04 , B23K9/23 , B23K9/235 , B23K26/342 , B23K26/282 , B23K26/60 , B23K26/34 , B23K35/30 , B23K35/32 , B23K35/36 , B23K35/24 , C21D9/50 , B23K101/00 , B23K103/16 , B23K103/18 , B23K103/00
摘要： Methods for welding a particle-matrix composite body to another body and repairing particle-matrix composite bodies are disclosed. Additionally, earth-boring tools having a joint that includes an overlapping root portion and a weld groove having a face portion with a first bevel portion and a second bevel portion are disclosed. In some embodiments, a particle-matrix bit body of an earth-boring tool may be repaired by removing a damaged portion, heating the particle-matrix composite bit body, and forming a built-up metallic structure thereon. In other embodiments, a particle-matrix composite body may be welded to a metallic body by forming a joint, heating the particle-matrix composite body, melting a metallic filler material forming a weld bead and cooling the welded particle-matrix composite body, metallic filler material and metallic body at a controlled rate.
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公开(公告)号：US20220074684A1
公开(公告)日：2022-03-10
申请号：US16948204
申请日：2020-09-08
申请人： Suncor Energy Inc.
发明人： Simon Yuen , Yasin Suzuk , Duane Go Serate
摘要： A tube and tubesheet assembly is provided, which includes a tubesheet, the tubesheet comprising at least one tube insertion aperture therethrough; at least one tube inserted in the at least one tube insertion aperture; and a damage-resistant layer applied to an edge of the at least one tube and along an inner surface of a portion of the tube that is positioned within the corresponding tube insertion aperture. A heat exchanger including the assembly is also provided. A method is also provided for coupling a tube to a tubesheet. The method includes applying a damage-resistant layer to an edge of the tube and along an inner surface of a portion of the tube that is positioned within a tube insertion aperture in the tubesheet. The method can also be used to repair tubes and retrofit pre-existing tube-to-tubesheet joints.
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公开(公告)号：US20210387277A1
公开(公告)日：2021-12-16
申请号：US17291066
申请日：2019-11-01
发明人： Markus TAMM , Marcel FOH
摘要： An orbital welding device (1) for welding two pieces of pipe, the orbital welding device (1) having a welding current source (10) in a welding current source housing (11) and an orbital welding head (20), which is separate from the welding current source housing (11) and is connected to the welding current source (10) by a cable (2), the orbital welding head (20) having a chamber (50) for the use of shielding gas (50) and/or the orbital welding device (1) having a purging device (90) for the use of shielding gas, preferably back-up shielding gas or purge gas, the orbital welding device (1) having an oxygen sensor (40), wherein the oxygen sensor (40) is arranged in or on the welding current source housing (11).
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公开(公告)号：US11175099B2
公开(公告)日：2021-11-16
申请号：US16589637
申请日：2019-10-01
发明人： Shankar T. Rajagopalan , Siddharth Mallick , Brian L. Kirk , Jose C. Bouche , Jason W. Curbo , Jonathan B. Kettelkamp , Lawrence Sniderman , Shailesh Radhakrishnan
IPC分类号： B23K31/00 , F28D7/00 , B23K37/00 , F28F3/02 , B23K9/028 , B23K9/32 , B23K101/10 , B23K103/04
摘要： The present application relates to a field system and methods that can be deployed in the application of pipe welding. The field system provides many embodiments relating to pipe welding systems and methods, that can be used in combination with one another, or individually. Such welding systems and methods, include, for example, internal welding systems and methods, tie-in welding system and methods, pipe inspection systems and methods, pipe handling systems and methods, internal pipe cooling systems and methods, non-destructive testing systems and methods, as well as remote interface and database systems and methods (uLog), to name a few. The application further relates to welded pipes that result from some or all of such processes.
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公开(公告)号：US11097367B2
公开(公告)日：2021-08-24
申请号：US14718878
申请日：2015-05-21
IPC分类号： B23K9/028 , B23K9/16 , B23K9/32 , B23K37/06 , B23K37/053 , B23K101/04
摘要： A method of controlling a back weld root surface includes arranging a sealing portion along the back weld root surface of a workpiece to form a purge region adjacent to a section of a joint, supplying a shielding gas within the purge region at a first flow rate, and applying a weld deposit across a front surface of the section of the joint. The shielding gas displaces an ambient environment within the purge region, and the back weld root surface of the weld deposit includes a positive root penetration relative to the back weld root surface based at least in part on the shielding gas within the purge region.
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公开(公告)号：US20210069812A1
公开(公告)日：2021-03-11
申请号：US17046001
申请日：2019-10-28
发明人： Dmitry Alexeevich BUBLIK , Iliya Alexeevich EFIMOV , Roman Vladimirovich KONONENKO , Egor Vladimirovich KUZIN
IPC分类号： B23K9/028
摘要： The present device is configured for mounting on and movement around the outside surface of a pipe to be processed, and comprises a clamping device and a flexible composite carriage consisting of at least two pivotally connected component parts capable of pivoting about a pin of a hinged connection lying parallel to the axis of the pipe to be processed, wherein each part comprises a group of at least two coaxial supporting rollers, the axis of which is situated at a distance from the hinged connection that is less than or equal to ⅓ of the distance between the hinges of the component part and is parallel to the axis of the pipe to be processed. The component parts are connected in succession in such a way that each part bears on two groups of supporting rollers, one of which is mounted on the component part, and the other of which is mounted on an adjacent component part. One of the component parts of the carriage is mounted such as to rest on an additional group of supporting rollers. At least one component part is provided with a supporting and driving roller and with a driving mechanism having a source of torque, and at least one component part has at least one processing device.
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