A Welding Method for Tension Ribs of Weld Joints of Pipelines in High Temperature Environment

Abstract

The invention relates to a welding method for tension rib plates for welding seams of high-temperature environment pipelines and belongs to the technical field of high-temperature pipeline maintenancemethods. The welding method is used for welding the tension rib plates to the high-temperature environment pipeline welding seams. According to the technical scheme, sunroof holes are cut in the welding seam cracking portions of the pipelines, the tension rib plates are welded to the inner walls of the pipeline welding seam cracking portions where the sunroof holes are located of the pipeline, the tension rib plates are evenly distributed on the periphery of the inner wall of each pipeline, and due to the fact that no burning problem is generated when the tension rib plates are in the water-cooling pipelines, the welding seam strength is ensured, and the function of long-term reinforcement of the pipeline welding seam cracking portions is played. The welding method is the first of pipeline maintenance in the high temperature environment, a traditional tension rib plate welding method is broken through, the tension rib plates are creatively welded to the inner walls of the pipelines, the burning problem of the tension rib plates in the water-cooling environment is prevented, the problems of incomplete water leakage and maintenance of the pipeline welding seams in the industry are solved completely with the simplest method, meanwhile the consumption of spare parts can be lowered, and safe and smooth production is ensured.

Description

technical field [0001] The invention relates to a method for welding a tension rib plate at a welding joint of a pipeline in a high-temperature environment, and belongs to the technical field of high-temperature pipeline maintenance methods. Background technique [0002] In the production lines of iron and steel enterprises, the welding joints of blast furnaces, converters, and electric arc furnaces often produce high-stress cracks and water leakage due to the influence of high-temperature environments. Later, the tensile ribs are welded across the weld seam to reduce the tensile force at the weld joint and avoid cracks at the weld joint. Oxidation and burning of the plate occurs at high temperature, and it loses its function and fails to achieve the expected purpose. So far, the problem of how to deal with the cracks at the welding joints of water-cooled pipes due to high stress has not been effectively solved in high-temperature environments. Only the method of externally...

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a welding method for tension ribs at welding joints of pipelines in high temperature environment. It solves the problems of water leakage and incomplete maintenance at the welding joint of the pipeline, and at the same time can reduce the consumption of spare parts and ensure the safe and smooth production

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