The present invention provides a method and device for
polishing the inner surface of a pipeline with magnetic force assistance and a rotating fluid, and belongs to the field of mechanical technology. The
polishing device includes a working platform, a fluid
processing unit, a vibration unit, a magnetic
control unit and a spiral guide unit. The fluid
processing unit is symmetrically installed on both sides of the working platform, and the two ends of the workpiece are connected to the fluid
processing unit; the spiral guide unit is a spiral rod with magnetic
conductivity, which is located inside the workpiece, and the spiral structure on the surface of the spiral rod guides the
polishing liquid from the original axial
linear motion to the spiral feeding motion along the
pipe wall, thereby improving the polishing efficiency. The present invention uses a magnetic force-assisted rotating fluid polishing device on the inner surface of the pipeline for polishing, which can achieve rapid and uniform polishing of the inner surface of a straight
pipe and a
pipe with variable roughness, thereby reducing the along-the-way resistance of the medium in the pipe, improving the sampling accuracy, and enhancing the stability of the fluid in the pipe, solving the problems of limited polishing of the inner surface of existing slender pipes, uneven processing, and low processing efficiency.