Operation method for water leakage repair of converter support ring

Abstract

The invention relates to an operation method for repairing water leakage of a converter support ring. Firstly, the furnace shell is opened. It is characterized in that the welding seam between the inner web plate of the support ring and the upper cover plate is cut from the furnace shell cavity, and the upper cover plate is cut off. , make a single-sided groove on the weld seam, process the backing plate at the joint of the upper cover plate of the support ring, and weld the re-blanked upper cover plate and hoisting plate with gas shielded welding, and anneal stress relief treatment, grinding and welding Seam area and ultrasonic flaw detection, assemble and weld the lifting trunnion on the lifting plate, make an outer groove on one end of the upper cover plate and the support ring, assemble and weld from the outside, then seal the other end of the upper cover plate, and preheat at 100-150°C For left and right, gas shielded welding is used for welding, the weld area is polished and ultrasonic flaw detection is performed, and the weld area is annealed for stress relief. The beneficial effects of the invention are: effectively solving the water leakage problem of the supporting ring, ensuring the personal safety of the operator, good repairing effect, 100% pass rate, and ensuring the normal operation of the converter as a whole.

Description

technical field [0001] The invention relates to an operating method for repairing and welding the supporting ring of a converter in case of severe water leakage. Background technique [0002] Steelmaking converter support rings are generally water-cooled. Due to the complexity of the welding seam and the large internal stress at the welds between the inner web of the support ring and the upper cover plate side and the lifting lugs of the upper cover plate, leakage often occurs. The general repair plan is to directly Enter the inside of the support ring from the manhole to carry out the repair work. Since the position of the manhole is far away from the leaking part, the passage space for the operator to travel is narrow and there are many ribs and steel pipes hindering. In addition, the operator spends a long time in the cavity whether it is grinding or cleaning. The defect is the welding operation, which can easily cause suffocation, burns, electric shocks and other persona...

AI Technical Summary

Problems solved by technology

[0002] Steelmaking converter support rings are generally water-cooled. Due to the complexity of the welding seam and the large internal stress at the welds between the inner web of the support ring and the upper cover plate side and the lifting lugs of the upper cover plate, leakage often occurs. The general repair plan is to directly Enter the inside of the support ring from the manhole to carry out the repair work. Since the position of the manhole is far away from the leaking part, the passage space for the operator to travel is narrow and there are many ribs and steel pipes hindering. In addition, the operator spends a long time in the cavity whether it is grinding or cleaning. The defect is still welding operations, which can easily cause suffocation, burns, electric shocks and other personal injuries if splashes, harmful gases or electrical equipment are produced, and there is no smooth rescue or evacuation channel for rescue after danger occurs, posing a great safety hazard

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