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- W2891603331 abstract "Compared with conventional laser welding, the welding quality was improved significantly while the laser welding was conducted under vacuum. The penetration depth of the weld seam increased sharply. The welding formation was improved and the porosity defects were suppressed effectively. In recent years, numerous researches on the mechanism of welding process, low vacuum and local subatmospheric pressure laser welding equipments have been undertaken. The laser welding under vacuum exhibits the wonderful application prospects to weld the thick plates in the shipbuilding, nuclear instrument and pressure vessel industries. The influences of ambient pressure on the laser welding penetration depth, surface formation and porosity defect were summarized. The domestic and overseas research findings on mechanism of laser welding under vacuum were elaborated from the aspects of plasma plume, keyhole and molten pool behaviors. In addition, the applications of laser welding under vacuum in the industry were introduced. Finally, the problems of reported researches were analyzed and the prospects of the technology were discussed." @default.
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- W2891603331 date "2017-12-15" @default.
- W2891603331 modified "2023-09-23" @default.
- W2891603331 title "[Opto-Electron Eng, 2017, 44(10)] Research status and development prospects of laser welding under vacuum" @default.
- W2891603331 doi "https://doi.org/10.3969/j.issn.1003-501x.2017.10.001" @default.
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