Automatic gunning lining-making method for steel ladle

The invention belongs to the field of metallurgy, and relates to an automatic gunning lining-making method for a steel ladle, which comprises the following steps: after a first ladle is used to about 165 furnaces and is offline, roughening the surface of a working layer of a ladle wall, cleaning, and then carrying out automatic gunning construction; after gunning repair, 55-65 furnaces are used on the upper line for normal lower line medium repair, and three bricks and slag lines are replaced; and a ladle is used from the second on-line use to the 110-130 furnace off-line use, three bricks and a slag line are replaced, steel slag and residual gunning materials on the surface of the ladle wall are cleaned up, and gunning is conducted again. And multi-layer protection of a carbon-free gunning layer, a pouring layer and a permanent layer is formed at the wall part of the steel ladle, so that the safety coefficient of the steel ladle is improved, and safe turnover of the steel ladle is ensured. And baking is carr