The invention discloses a heavy steel
plasma cutting machine, and particularly relates to the technical field of
plasma cutting, the heavy steel
plasma cutting machine comprises a supporting table, a shell is fixedly connected to the upper end of a supporting plate, a universal mechanical arm is fixedly mounted on the inner surface of the shell, and a plasma spray gun connected with a
plasma generator is fixedly mounted at the movable end of the universal mechanical arm; buffering limiting structures are arranged at the upper end of the supporting plate in a
bilateral symmetry mode, and a
slag cleaning structure is arranged on the inner surface of the supporting plate. According to the
plasma cutting machine for the heavy steel, the L-shaped block, the
mooring rope and the like drive the clamping and buffering
assembly to achieve multi-directional clamping, the contact block, the compression spring and the non-
Newtonian fluid act synergistically to reduce cutting offset, and precision is improved; the
slag cleaning structure is matched with the supporting plate to achieve efficient
slag cleaning, a sweeping piece, a Y-shaped connecting rod and a cleaning ring synchronously clean the slag, a second sliding block, a slag removal
shovel and an oval block vibrate to scrape the slag, a fluted disc, a
grinding piece and the like improve the cleaning efficiency, and the cutting quality is guaranteed.