A Method for Eliminating Indentation Defects of Furnace Roller in Continuous Annealing Furnace

A continuous annealing furnace and annealing furnace technology, applied in the direction of furnaces, furnace types, heat treatment furnaces, etc., can solve the problems of consuming manpower, material resources and time, and the inconvenience of stable production, so as to reduce the loss of product degradation, reduce energy and medium consumption, and avoid complex The effect of steps

Active Publication Date: 2021-03-09
HANDAN IRON & STEEL GROUP +1
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  • Claims
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Problems solved by technology

When there is a problem: the whole process consumes a lot of manpower, material resources and time, which brings great inconvenience to smooth production

Method used

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  • A Method for Eliminating Indentation Defects of Furnace Roller in Continuous Annealing Furnace
  • A Method for Eliminating Indentation Defects of Furnace Roller in Continuous Annealing Furnace

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Embodiment Construction

[0030] Below in conjunction with accompanying drawing, the present invention will be further described through embodiment.

[0031] A method for eliminating indentation defects of furnace rolls in a continuous annealing furnace, comprising the steps of: formulating a quick lookup table for the indentation area of ​​a turning roll in a continuous annealing furnace and a quick lookup table for the position of a turning roll in a continuous annealing furnace, and measuring the distance of the indentation defect on the surface of a strip steel , compared with the quick look-up table of the indentation area of ​​the steering roll of the annealing furnace, determine the area where the indentation defect of the continuous annealing furnace furnace roll occurs; then use low temperature and small tension to make the shape of the indentation of the furnace roll smaller or disappear, and calculate the resulting indentation furnace The distance between the roll and the reference point of t...

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Abstract

The invention relates to a method for eliminating furnace roller indentation defects of a continuous annealing furnace and belongs to the technical field of continuous annealing furnaces. According tothe technical scheme, the furnace roller indentation shape becomes smaller or disappears through low and temperature and low tension, the distance between a furnace roller which has an indentation and a discharging reference point is worked out, and the position of the indentation furnace roller is determined according to a continuous annealing furnace turning roller position zoom table; then foreign matter on the surface of the furnace roller is eliminated through sliding friction between low-temperature strip steel in a static state and the furnace roller in a motion state, and thus the furnace roller indentation defects of the continuous annealing furnace are eliminated. The complicated step of searching for the indentation furnace roller through long-time stopping and furnace openingis effectively avoided, the energy medium consumption at the defect checking stage is greatly reduced, and the product degrading loss caused by the furnace roller indentation defects is reduced.

Description

technical field [0001] The invention relates to a method for eliminating indentation defects of furnace rolls in a continuous annealing furnace, and belongs to the technical field of continuous annealing furnaces. Background technique [0002] The continuous annealing production line is a production unit mainly producing cold-rolled sheets, and the continuous annealing furnace is the key equipment for re-annealing the cold-rolled sheets. The continuous annealing furnace adopts a fully enclosed furnace structure, and the furnace is filled with H2 and N2 mixed gas to form a reducing atmosphere, which is used to isolate the air and ensure that the strip will not be oxidized in the continuous annealing furnace. Continuous annealing furnace is usually divided into preheating section, heating section, soaking section, slow cooling section, fast cooling section, overaging section, final cooling section and water quenching section. The furnace roll diameters in different process se...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21D9/56C21D1/26
CPCC21D1/26C21D9/56C21D9/564
Inventor 王智增周恒龙赵赛王志磊马凯许勋郑占领
Owner HANDAN IRON & STEEL GROUP
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