Arc Welding
    51.
    发明申请
    Arc Welding 审中-公开

    公开(公告)号:US20200376602A1

    公开(公告)日:2020-12-03

    申请号:US16768623

    申请日:2018-11-26

    申请人: Acergy France SAS

    摘要: A weld is formed in a workpiece such as a pipeline by first activating a melting device, such as a laser, to form a molten weld pool in the workpiece and then activating a welding device, such as a GMAW torch, to initiate a weld in the weld pool. The weld therefore incorporates the weld pool homogeneously. Relative movement between the activated welding device and the workpiece continues and completes the weld while the melting device remains deactivated.

    ELECTRONIC DEVICE AND METHOD FOR MANUFACTURING SAME

    公开(公告)号:US20200328132A1

    公开(公告)日:2020-10-15

    申请号:US16914903

    申请日:2020-06-29

    申请人: DENSO CORPORATION

    摘要: An electronic device includes: a support member that has a metallic placement surface joined to the conductive bonding layer, and a metallic sealing surface provided on an outer side of the placement surface in an in-plane direction of the placement surface to adjoin the placement surface and to surround the placement surface; and a resin member, which is a synthetic resin molded article, joined to the sealing surface and covering the electronic component. The sealing surface includes a rough surface having a plurality of laser irradiation marks having a substantially circular shape. The rough surface includes a first region and a second region. The second region has a higher density of the laser irradiation marks in the in-plane direction than the first region.

    PICOSECOND-NANOSECOND LASER COMPOSITE ASYNCHRONOUS CERAMICS POLISHING METHOD

    公开(公告)号:US20200269355A1

    公开(公告)日:2020-08-27

    申请号:US16727726

    申请日:2019-12-26

    IPC分类号: B23K26/354 B23K26/00

    摘要: The invention disclose a picosecond-nanosecond laser composite asynchronous ceramics polishing method. First, a picosecond laser is used to scan and irradiate the ceramic surface along the scanning path. At the same time, ceramic surface is initially flattened and the electronic state of materials is removed by picosecond laser to produce micro-nanoparticles. Micro-nanoparticles exist as ionized state in the adjacent space region of irradiated ceramics surface. Then, low energy density nanosecond laser is used according to a preset time to irradiate and melt these micro-nanoparticles which can easily form a dense and smooth fine crystal melting layer to achieve the polishing effect. The present disclosure fixes the generation of micro-cracks and pores in traditional laser polishing process. It overcomes the shortcomings of traditional laser polishing such as large thermal influence zone, easy to generate micro-cracks and pores on the surface, etc. High efficiency and high precision submicron level fine polishing with very low material removal amount is realized.