Anti-deflection start-up method of annealing furnace
An annealing furnace and bending technology, which is applied in the anti-bending field of annealing furnaces, can solve problems such as strip wrinkling and deformation, and achieve the effect of improving the quality of strip steel and avoiding defects that are easy to bend
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[0035] The embodiments of the present invention solve the technical problem of easy warping in the prior art by providing a start-up method for preventing warping of an annealing furnace, and realize the technical effect of avoiding the occurrence of warping defects and improving the quality of strip steel.
[0036] The technical solution in the embodiment of the present invention is to solve the above-mentioned problems, and the general idea is as follows:
[0037] First obtain the actual residence time of the strip steel in the annealing furnace, and then compare the actual residence time with the preset time threshold; Start up in the annealing furnace immediately after a planned shutdown. In order to avoid the "bending" defect on the surface of the strip due to the increase in the temperature difference between the strip and the furnace roll due to the continued decrease of the strip temperature, the furnace area adopts "extremely speed-up" operation until the strip speed ...
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