Method for changing inner mixer on flame barrel

The invention relates to a method for changing an inner mixer on a flame barrel, belonging to the technical field of the engine repair. The method comprises the following steps: marking upper mark lines in cutting areas of the head of the flame barrel and the inner mixer, and cutting the head of the flame barrel; measuring and recording the height of the head of the flame barrel; arranging the head of the flame barrel on a vertical lathe, and checking the jump of the fan-shaped section of the head of the flame barrel in a position which is 0-5mm far away from cutting lines; lathing the fan-shaped section of the head of the flame barrel until the fan-shaped section of the head of the flame barrel has the size of 163+/-0.25mm, removing burrs, and rounding sharp edges; grinding the surface to be welded from the inner side and the outer side of the cutting position of the head of the flame barrel, placing the inner mixer to be changed on the head of the flame barrel, aligning the upper mark lines in the positions