Metal mixed lorry furnace shell down-warping correction and repair method

Abstract

The invention discloses a metal mixed lorry furnace shell down-warping correction and repair method which includes detaching various accessories of a metal mixed lorry furnace shell at first, maintaining cones on two sides of the furnace shell without any special treatments, arranging two electric hydraulic jacks between the bottom surface of a straight barrel of the furnace shell and a platform of a lorry body, circularly symmetrically cutting the upper portion of the straight barrel along joints of the cones and the straight barrel, cutting a small section of the lower portion of the straight barrel along a welding seam, keeping the furnace shell static, starting the two electric hydraulic jacks and jacking a down-warping portion of the bottom surface of the straight barrel of the furnace shell to the upper portion of the bottom surface of the straight barrel, leveling and positioning the joints of the straight barrel and the cones from the furnace outside to the furnace inside by hand hydraulic jacks then connecting the straight barrel with the cones in a butt jointing manner, manufacturing arc plates, rewelding the cutting portions, and finally mounting the various components of the furnace shell. By the method, down-warping of the furnace shell of the metal mixed lorry is corrected and repaired conveniently, scratch between the furnace shell and the platform of the lorry body is avoided, the service life of the furnace shell of the metal mixed lorry furnace is prolonged, and safety and normal running of the metal mixed lorry are guaranteed effectively.

Description

technical field [0001] The invention relates to a method for correcting and repairing the lower deflection deformation of a furnace shell of a mixed iron car. Background technique [0002] As a heavy metallurgical container equipment, the mixed iron car transports molten iron for a long time and moves on the railway car. The shape of the furnace shell of the mixed iron car is a straight cylinder part in the middle and a cone part connecting the two ends of the straight cylinder part, and is built with refractory bricks. The two ends of the cone part are connected to the two sides of the mixed railway car body through bearing bushes and support the rotation of the casing. The shell is located above the car body platform of the mixed-rail car, and the car body platform has inclined planes on both sides and a plane in the middle according to the shape of the shell. The molten iron is contained in the ...

AI Technical Summary

Problems solved by technology

The furnace shell is filled with molten iron. Due to the brick laying of the furnace shell and the carrying of the molten iron, the furnace shell has a certain downward deflection deformation when it is loaded. When the new car is unloaded with the molten iron in the furnace shell, the downward deflection deformation of the furnace shell can be recovered, but the mixing After long-term use of the iron car furnace shell, the single small plastic deformation is accumulated, and then the macroscopic deflection deformation occurs, that is, there is a certain amount of downward deflection deformation in the shell in the vertical direction, resulting in the deflection of the shell when the shell rotates. If the distance between the deformed part and the slope or plane of the car body platform is too small, there will be scratches, which will seriously affect the safe and normal operation of the mixed iron car

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