The invention relates to a mirror surface rolling process for a Hastelloy ultra-thin strip for a second-generation high-temperature superconducting
baseband, and belongs to the technical field of Hastelloy mirror surface rolling. The thickness of a
raw material of the Hastelloy ultra-thin strip is 0.6-0.8 mm, and the width of the
raw material of the Hastelloy ultra-thin strip is 280-300 mm; the thickness of a finished product ranges from 0.03 mm to 0.045 mm, the width of the finished product ranges from 280 mm to 300 mm, and the rolling technology of the finished product comprises the following steps of S1, first-stage rough rolling, S2, first-stage cleaning, S3, first-stage mechanical
polishing, S4, second-stage medium rolling, S5, second-stage cleaning, S6, second-stage mechanical
polishing, S7, third-stage finish rolling and S8, third-stage cleaning. The
thinning efficiency of the Hastelloy ultra-thin strip is improved, surface parameters of a working roller are better transmitted to the surface of the strip through asymmetrical rolling, and the
surface roughness of the strip is effectively reduced; and the
surface roughness of the strip is controlled more accurately by controlling staged rolling, and finally mirror surface rolling is achieved.