Orbital welding apparatus
    1.
    发明授权

    公开(公告)号:US12083632B2

    公开(公告)日:2024-09-10

    申请号:US17308538

    申请日:2021-05-05

    IPC分类号: B23K9/028

    CPC分类号: B23K9/0286

    摘要: The disclosure relates to an orbital welding head for an orbital welding apparatus for connecting by means of a cable to a welding current source in a welding current source housing, said current source being equipped with a base controller. The orbital welding head has a tube mount and a welding electrode holder rotatably supported opposite the tube mount for mounting a welding electrode, wherein the orbital welding apparatus has a motor, which is configured in order to drive the welding electrode holder and thus rotate it opposite the tube mount, wherein the orbital welding head has a chamber for inert gas, which is configured in order to surround the welding electrode of the orbital welding head during a welding process and to essentially terminate it outwardly. The orbital welding head has an electronic circuit, which has a memory arranged in the orbital welding head. The electronic circuit is configured in order to store one or more electrode load values of the welding electrode. The electronic circuit of the orbital welding head and/or the base controller is configured such that a maintenance state value of the welding electrode is determined on the basis of the electrode load values, said state being a measure of wear on the welding electrode.

    PORTABLE ADVANCED PROCESS MODULE
    4.
    发明公开

    公开(公告)号:US20230311229A1

    公开(公告)日:2023-10-05

    申请号:US17981527

    申请日:2022-11-07

    摘要: A portable advanced process module system includes, for example, a welding power source, an portable advanced process module, and a wire feeder. The portable advanced process module and the wire feeder are separately enclosed in suitcase style enclosures with disconnectable power and communication means between the portable advanced process module and the wire feeder. The processing unit includes power electronics to enable advanced weld processes that can be delivered to the wire feeder and a welding work piece. The portable advanced process module is powered by a DC bus that can be supplied by a welding power source. Connecting the portable advanced process module between the welding power source and the wire feeder enables advanced welding processes to be accomplished at great distances from the main welding power source. Separating the power electronics into the portable advanced process module and maintaining a standard suitcase wire feeder form factor keeps the welding equipment used in the working area envelope small, light, and portable.

    Transmission shaft and method and device for the production thereof

    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

    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).

    METAL CARBIDE/NITRIDE PRECIPITATION CONTROL IN FUSION WELDING

    公开(公告)号:US20220324066A1

    公开(公告)日:2022-10-13

    申请号:US17847715

    申请日:2022-06-23

    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.

    Tube and Tubesheet Assembly with Damage Resistance and Method for Protecting Tube and Tubesheet Assemblies from Damage

    公开(公告)号:US20220074684A1

    公开(公告)日:2022-03-10

    申请号:US16948204

    申请日:2020-09-08

    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.