Removal method of furnace nose of hot-dip galvanizing unit

Abstract

The invention discloses a dismantling method for a hot galvanizing unit furnace nose. The method comprises the following steps that: a hot galvanizing unit halts, a zinc pot is dismantled, various types of media which enter the furnace nose stop being transferred, and are closed, the pipelines of various types of media are dismantled and marked, and the furnace nose is positioned on a halting position; a temporary bracket is manufactured and is assembled below the furnace nose; the temporary bracket is connected with a steel structure for hanging the furnace nose, stand columns are independently supported on a steel cross beam below a swinging mechanism and the pull rod cross beam of the furnace nose; a travelling crane and a steel beam are hoisted on the big cross beam of the furnace nose, the big cross beam is cut and dismantled and is hoisted to a storage area; a metal expansion joint is dismounted, and the expansion and contraction quantity of the metal expansion joint is fixed; and a hoisting steel wire rope is adopted to bind the furnace nose and the steel structure, connection between the steel structure and a foundation is cut off, and the travelling crane is connected withthe hoisting steel wire rope to integrally hoist the furnace nose, the steel structure and the temporary bracket out of the storage area to finish dismantling the furnace nose. By use of the method,construction efficiency is improved, workload is reduced, potential safety hazards are avoided, the intact furnace nose component is guaranteed, and the accuracy of the secondary installation of the furnace nose is improved.

Description

technical field [0001] The invention relates to a method for removing the furnace nose of a hot-dip galvanizing unit. Background technique [0002] Hot-dip galvanizing is currently the most widely used steel surface treatment method with the best performance-price ratio. Hot-dip galvanized products play an inestimable and irreplaceable role in corrosion reduction, life extension, energy saving and material saving of steel plates. At the same time, coated steel is also supported by the state. And priority development of high value-added short-term products. The hot-dip galvanizing line for automobile strip steel in the steel plant is the main equipment of the steel plant. In order to ensure the quality of the hot-dip galvanized products, the zinc boiler nose, the key equipment in the hot-dip galvanizing line, often needs to be modified and replaced. The cleaning device is used to greatly reduce the amount of zinc dust generated during the galvanizing process, improve product...

AI Technical Summary

Problems solved by technology

If the overall furnace nose is dismantled into parts, it will destroy its overall connection accuracy and performance, and may damage its components, and the workload of dismantling will be large, and the efficiency of dismantling construction will be low, which will affect the accuracy of subsequent installation.

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