Continuous annealing unit drying oven aluminized pipeline installation method

Abstract

The invention particularly relates to a continuous annealing unit drying oven aluminized pipeline installation method. The method is characterized by comprising the steps of 1, optimal arrangement ofpipelines and supports; 2, segmented prefabrication of the pipelines; 3, welding and installation of the pipelines. According to the method, through the BIM technology, the arrangement of the pipelines and the supports is optimized, the optimal trend of the pipelines is determined, and the positions of the supports are precisely determined. By using the parameterization characteristics of a pipeline model, the pipelines are subjected to segmented prefabrication and then subjected to aluminizing treatment. During welding of the pipelines, the variety of welding rods is optimized, a positioningtool is made for pipeline assembly, and by using the one-side welding both-side formation technology, pipeline welding is conducted. During pipeline installation, a series of protective measures are adopted, it is ensured that the aluminized layers of the pipelines are not damaged. By using the installation method, the installation difficult of an aluminized pipeline is reduced, and the construction progress is expedited. The method as the advanced technology in the field of pipeline installation effectively solves the key technological problems during construction of the aluminized pipeline.

Description

technical field [0001] The invention relates to the field of metallurgical engineering pipeline installation, in particular to a method for installing an aluminized pipeline in a drying furnace of a continuous annealing unit. Background technique [0002] In the installation of aluminized pipes in the drying furnace of the cold-rolled horizontal continuous annealing unit, in order to save material costs and reduce project costs, carbon steel pipes are generally used for the installation of smoke exhaust pipes after aluminized treatment, and the aluminized layer of carbon steel aluminized pipes Performance indicators such as high temperature resistance, oxidation resistance, and corrosion resistance are close to those of stainless steel. Generally, the traditional pipeline installation method adopts the method of purchasing finished steel pipes and directly aluminizing them to the site for piping construction. Because the material of ordinary carbon steel pipes changes after ...

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Problems solved by technology

Generally, the traditional pipeline installation method adopts the method of purchasing finished steel pipes and directly aluminizing them to the site for piping construction. Because the material of ordinary carbon steel pipes changes after aluminizing treatment, a layer of aluminum oxide is formed on the surface. Oxide film causes great changes in cutting and welding performance, which increases the difficulty of subsequent smoke exhaust pipe construction, resulting in slow construction progress and low efficiency on site

With the uncompressed construction period, the above-mentioned traditional pipeline procurement, pretreatment and installation methods can no longer meet the needs of rapid installation and construction of the aluminized pipeline in the drying furnace of the continuous annealing unit

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