Thin-wall cylinder shape correction device

A thin-wall cylinder shape correction device belongs to the technical field of process apparatus, and is mainly used for correcting the shape of a thin-wall cylinder by tempering after heat treatment and quenching. The thin-wall cylinder shape correction device is mainly characterized in that the device comprises a taper body (1), a movable expansion block (2), a draw plate (3), a screw (4), a retaining ring (5), a gasket (6), and a large nut (7), wherein the movable expansion block (2) includes three identical taper section-shaped structures; the taper angle of the outer surface of the taper body (1) is equal to that of the inner surface of the movable expansion block (2); the movable expansion block (2) is matched with the taper body (1) through the three section-shaped structures with taper degree; the movable expansion block (2) is driven by the screw (4) performing axial movement to round the thin-wall cylinder. Accordingly, the shape correction and tempering process are carried out synchronously on the