Repairing furnace top and repairing method for collapsed portion of furnace top of steel-rolling heating furnace

Abstract

The invention discloses a repairing furnace top and repairing method for a collapsed portion of the furnace top of a steel-rolling heating furnace. By adoption of a plastic prefabricated part, the advantages that the temperature and strength in the plastic furnace top are not decreased, the temperature and strength are high, the thermal shock resistance is good, and the stripping resistance is high are maintained; deformation caused by uneven stress of flexibly-hung anchoring bricks is automatically compensated by adoption of the structure that the furnace top is flexibly hung through springs, and the phenomenon that the anchoring bricks are pulled broken is completely eradiated; and a gap between the plastic prefabricated part and the normal furnace top is poured in site. The problems that repairing construction of the collapsed portion of the original furnace top is difficult, and the construction quality cannot be guaranteed easily are solved; the construction difficulty is greatly lowered, and the construction efficiency is improved; and the repairing furnace top and repairing method for the collapsed portion of the furnace top of the steel-rolling heating furnace have the advantages that the construction period is short, and the furnace heating time is short.

Description

technical field [0001] The invention relates to the technical field of steel rolling, in particular to a repairing furnace roof and a repairing method for the roof collapse of a steel rolling heating furnace. Background technique [0002] The hot rolling production line of a domestic thin plate factory is the first hot continuous rolling production line in my country with independent intellectual property rights. The furnace roof of the heating furnace is made of plastic, aluminum silicate fiber felt and fiber castable structure. [0003] The two heating furnaces in the above-mentioned hot rolling production line have been in use for 10 years since they were put into operation in early 2006. According to the design and the service life of the same type of heating furnaces in China, the overhaul period of this type of heating furnace is generally about 8 years, which is already the overhaul period. Now the roofs of the two heating furnaces can be made of plastic after many ye...

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Problems solved by technology

[0014] The purpose of the present invention is to provide a repair roof for the collapsed part of the roof of the steel rolling heating furnace. The structure of the repaired roof can solve the difficulty in repairing the roof collapse caused by the use of plastic in the furnace roof, and the construction quality is not easy to guarantee. Improve construction efficiency and shorten construction period

Another object of the present invention is to provide a method for repairing the roof collapse of a steel rolling heating furnace. The repair method can solve the problems of difficulty in repairing the roof collapse caused by the use of plastic in the furnace roof, and difficulty in ensuring construction quality. , improve construction efficiency and shorten construction period

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