Method for remedying inner hole of circular ring type workpiece

The invention relates to the field of machining, in particular to a circular ring type workpiece inner hole remedy method which comprises the following steps: a) coating a coloring agent on the outer surface of a butt joint ring, and sleeving a workpiece outside the butt joint ring; b) upwards pulling out the butt joint ring, observing the coloring condition of the surface of the inner hole of the workpiece, if the coloring requirement is not met, executing the next step, and if the coloring requirement is met, executing the step d); c) the outer circle surface of the butt joint ring or the inner hole surface of the workpiece is polished, and the step a) is executed after machining is completed; and d, the butt joint ring is sleeved with the workpiece again, the extruded part is downwards placed on the inner side of the inner hole of the butt joint ring, the extrusion part is downwards placed on the inner side of the extruded part, the pressing block is placed above the extrusion part, and the whole is placed