Method for repairing plastic refractory on side wall of walking beam furnace

Abstract

A method for repairing plastic refractory on the side wall of a walking beam furnace solves the fault that the furnace wall is locally inclined during operation of the heating furnace, and comprises the following steps: (1) taking an expansion gap closest to a damage point as a dismantling critical point, dismantling the furnace wall which is 100mm away from the dismantling critical point by using an air pick, and dismantling the furnace wall within 100mm close to the dismantling critical point by using a chisel and a hammer; and (2) carrying out line laying and derusting on an anchoring brick portion of a side wall steel plate, and welding an anchoring brick drag hook fixing piece, the fixing piece being a seamless round pipe; lengthening the side wall anchoring brick by 40 mm, and shortening the anchoring brick drag hook by 40 mm, to locate the connection portion of the anchoring brick drag hook and the anchoring brick in a heat insulation fiber plate; positioning and welding rivet nuts; carrying out ramming construction of the refractory, the ramming height being 200 mm each time, constructing a wall surface after the refractory is fully poured, mounting a template, continuing ramming until the furnace top is reached, and finally closing a door. The service life of the heating furnace is prolonged, and the overhaul time of the heating furnace is shortened.

Description

technical field [0001] The invention belongs to the field of metallurgy and furnace maintenance, and in particular relates to a plastic repair method for the side wall of a walking heating furnace. Background technique [0002] The traditional repair method is to remove and cast the damaged part of the furnace wall, which has the defects of long oven time and short service life. During the operation of the heating furnace, there is a partial tilt of the furnace wall, which is prone to failure of the furnace wall collapse. Contents of the invention [0003] In order to solve the defects of the traditional heating furnace wall repair using castables, the castable side wall has poor resistance to rapid cooling and rapid heating, short service life, and long oven time, so as to improve the service life of the repaired parts of the heating furnace and shorten the heating furnace The oven time after the furnace wall is repaired, the invention provides a plastic repair method fo...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the defects of the traditional heating furnace wall repair using castables, the castable side wall has poor resistance to rapid cooling and rapid heating, short service life, and long oven time, so as to improve the service life of the repaired parts of the heating furnace and shorten the heating furnace The oven time after the furnace wall is repaired, the invention provides a plastic repair method for the side wall of the walk-in heating furnace