Plasma flame cutting machine for shipbuilding

The invention belongs to the technical field of flame cutting, and discloses a plasma flame cutting machine for ship manufacturing, which comprises a cutting gun, a heat insulation sleeve is welded at the bottom of the cutting gun, an integrated cover is fixedly sleeved outside the heat insulation sleeve, and a rotating frame is sleeved inside the integrated cover. The side face of the rotating frame is fixedly connected with a plurality of thrust blades which are evenly distributed through bolts, and the bottom of the rotating frame is fixedly connected with a slag grinding mechanism. Cooling water can cool a cutting gun through a spiral coil pipe cavity, premature geothermal damage of the cutting gun is prevented, the service life is prolonged, the cooling water can be guided into an integrated cavity through a water inlet guide pipe, the cooling water impacts and pushes a thrust blade to move, and then a slag grinding mechanism is driven to rotate rapidly under cooperation of a rotating frame; the scraping