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Aluminum alloy laser welding technology

Views: 0     Author: hu     Publish Time: 2021-09-02      Origin: dapeng

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The most interesting feature of aluminum alloy laser welding is its high efficiency, and to give full play to this high efficiency, it must be used in deep penetration welding of large thicknesses. Therefore, research and use of high-power lasers for deep penetration welding of large thicknesses will be an inevitable trend of future development. Deep penetration welding with large thickness highlights the pinhole phenomenon and its influence on weld pores. Therefore, the formation mechanism and control of pinholes become more important. It will become a hot issue of common concern and research in the academic and industrial circles in the future. .


  Improving the stability of the laser welding process and welding seam formation, and improving the welding quality are the goals that people pursue. Therefore, new technologies such as laser-arc composite technology, wire-filled laser welding, preset powder laser welding, dual focus technology and beam shaping will be further improved and developed.


   In addition, it was discovered that there is an inherent current of several amperes in the CO2 laser welding molten pool. The external magnetic field of the welding zone will affect the flow state of the molten pool and the morphology and stability of the photo-induced plasma. Therefore, the use of a certain form of magnetic field may improve the stability of the aluminum alloy laser welding process and the quality of the weld. Therefore, the use of auxiliary current to control the flow state of the molten pool through the electromagnetic force formed by it, thereby improving the stability of the welding process and improving the quality of the weld, may also attract more researchers' attention.


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