The invention belongs to the technical field of
pressure vessel machining, and particularly relates to a
pressure vessel cutting and
welding all-in-one
machine which comprises an operation table, a base platform is arranged at one end of the operation table, a clamping structure is arranged at the upper end of the base platform and comprises two clamping rings, and the two clamping rings are slidably connected to the upper end of the base platform; a containing structure is arranged between the two clamping rings and comprises two containing plates, a
cutting and
welding structure is arranged on the side wall of the base platform and comprises a fixed connecting frame, and the fixed connecting frame is arranged on the side wall of the base platform. By arranging the adjusting structure, during
welding, the inner wrapping frame and the outer wrapping frame can seal the part needing to be
cut or welded, harmful gas is finally prevented from directly entering the
atmosphere, and in the process, a first
grinding roller and a second
grinding roller located at the upper end of the adjusting frame can automatically
grind welding
slag generated by welding; therefore, the phenomenon that negative effects are generated due to the fact that the welding
slag is not treated in time is avoided.