Repairing method for trunnion of converter

Abstract

The invention discloses a repairing method for a trunnion of a converter. The method comprises the following steps of: 1) detaching an upper bearing seat and ejecting the converter, and detaching a sectioned damaged bearing and ball cushions at two sides; 2) assembling an inner ring and ball cushions with material filling holes; 3) adjusting the inner ring along the radial direction of the trunnion so as to ensure that the inner ring is positioned at the position which is coaxial with the trunnion, and fixing the inner ring; 4) arranging a bonding agent between each ball cushion and the trunnion, and between each ball cushion and the inner ring, so as to plug seams between each ball cushion and the trunnion, and between each ball cushion and the inner ring; 5) pumping a metal repairing agent into a space enclosed by the trunnion, the inner ring and the ball cushions through the material filling holes and fully filling the space by the metal repairing agent; and 6) carrying out heat preservation on the metal repairing agent in the space to be cured. The repairing method disclosed by the invention can reduce the repairing cost of the trunnion.

Description

technical field [0001] The invention relates to the technical field of converters, in particular to a repair method for converter trunnions. Background technique [0002] see figure 1 , The converter is a steelmaking furnace, which has a furnace body; the above furnace body is provided with a trunnion 103 for connecting with a reducer, and a split bearing is arranged on it; the two sides of the inner ring 106 of the above split bearing are respectively There are a first ball pad 105 and a second ball pad 102 sleeved on the trunnion 103, which are used to define the position of the inner ring 106 of the split bearing on the trunnion 103; the second ball pad 102 close to the furnace body is formed by The shaft shoulder on the trunnion 103 is tightened, and the first ball pad 105 is tightened by the device connected to the reducer on the trunnion 103; the above-mentioned trunnion 103 and the furnace body are of an integrated structure; the above-mentioned split bearing is arra...

AI Technical Summary

Problems solved by technology

The trunnion of the converter and the furnace body are of an integrated structure, and the method of replacing spare parts is to replace the new converter, resulting in high production costs; at the same time, the material of the trunnion is generally 37SiMn2MoV or 40Cr, which has poor weldability and is difficult to use surfacing welding Repair by way of processing

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