High-strength aluminum alloy connector based on rotary friction welding and preparation method of high-strength aluminum alloy connector

The invention belongs to the field of metal connection, and discloses a high-strength aluminum alloy connector based on rotary friction welding and a preparation method thereof.The method comprises the steps that a workpiece rotating section and a workpiece moving section of an aluminum alloy workpiece to be welded are welded in a rotary friction welding mode, and water quenching is conducted after welding is finished; the centers of the end faces of the workpiece rotating section and the workpiece moving section are each provided with a circular truncated cone structure, during welding, the small end face of the circular truncated cone structure on the workpiece rotating section right faces the small end face of the circular truncated cone structure on the workpiece moving section, and meanwhile cooling gas is used for cooling in the circumferential direction of the interface of the workpiece rotating section and the workpiece moving section. By the adoption of the circular-truncated-cone-shaped welding end