Friction plug welding is a solid phase welding technique that eliminates the friction stir welding tail holes or defects with a consumable special plug. It has many advantages, such as: large depth and narrow gap welding; low cost of plug material; environmental protection; fast welding speed, filling holes of 100mm depth for only 20s; and welding in harsh environments. The welding process is as follows: under certain pressure or tension conditions, the plug rod drives the plug rod to rotate by the driving device, rubs with the interface of the plug hole (the hole to be welded), forms plasticized metal, and holds for a period of time to complete the welding.
Lansheng CNC machine tool sales company developed the LY12 aluminum alloy friction plug welding for the market demand, and obtained a dense weld. The appearance and cross section of the plug joint are shown in the figure. This technology has raised the strength to a height and opened up the application neighborhood of friction stir welding technology.
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