Kiln suddenly stopped in the process of running, but not in time still not cold in time after slow turning or red kiln kiln, can create all sorts of kiln shell deformation. At this time should stop using kiln time as soon as possible to repair, to prevent bring greater accident after the operation of rotary kiln. Concrete repair method is as follows.
(1) pressure supporting method. With 300 tons of the jack, the force in the cylinder is concave and convex deformation area are supported. Making arc support up and down, jack in the middle of the bearing, by jack from the force deformation area, can use at the same time in the strength of the local heating flame, accelerate the recovery of the deformation.
(2) cylinder bending repair method. For cylinder bending deformation occurs, can draw at the bottom of the deformation section of the cylinder is the most tags, the barrel turn 180 degrees, slow temperature for 1 hour, the cylinder and then turn 90 degrees, slowly heat up 30 minutes, then turn 90 degrees, slowly heat up 30 minutes, so, turn a total of four times; Will the location of the cylinder in the original 180 degrees, continue to slowly heat up, and 1/15 per minute turn to the slow speed of rotation is about 4 hours. After heating up continual production, inventory shall be the normal amount of 60% ~ 80%, running in the cylinder deformation will gradually decrease.
(3) dig repair method. Local large deformation occurs when the cylinder, and the deformation of parts was badly damaged, can use this method, the change of the steel plate. Determining the location and size of the need to dig, first set in the parts at both ends of the ready to dig "m" glyph bearing, to prevent the cylinder deformation. For repair welding of steel plates, roll-up machine made arc shape, volume and open groove grinding, then dig for repair welding of steel plates inserted into the mouth, with low hydrogen electrode welding section.