Tensioning method for horizontal continuous annealing furnace of cold-rolled sheet processing line

Abstract

The invention discloses a tension building method for a horizontal continuous annealing furnace of a cold-rolled sheet processing line, and belongs to the field of metallurgical automation control. The method comprises the following steps: comparing tension feedback values of a furnace inlet and a water quenching section with a set tension protection value in a production recovery stage after furnace area maintenance, judging whether steel is deposited in a furnace heating area and the water quenching section, controlling transmission operation of the furnace heating area and the water quenching section according to a judgment result, and finishing creeping tension building of the furnace inlet and the water quenching section; conveying the strip steel according to the running condition of the tension roller after tension construction, judging whether the strip steel soaked in the zinc pot for a long time leaves the tension roller behind the water quenching section or not, if the strip steel leaves completely, stopping the furnace area, and re-constructing normal running tension at the furnace inlet and the water quenching section. The automatic tensioning function in the whole furnace area can be achieved, belt breakage accidents are avoided, and the production efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of metallurgical automation control, and more specifically relates to a method for building a horizontal continuous annealing furnace of a cold-rolled sheet processing line. Background technique [0002] The furnace rolls in each section of the furnace area of ​​the horizontal continuous annealing furnace of the cold-rolled sheet processing line are arranged horizontally. A set of tension rolls is arranged at the entrance of the furnace area to adjust the tension at the furnace entrance. Tension of pan and fast cooling section. Usually, the cold-rolled sheet processing line equipped with a horizontal continuous annealing furnace is not equipped with an intermediate looper between the furnace area and the process section due to reasons such as site and investment costs. [0003] Based on the above-mentioned process and equipment configuration, the cold-rolled sheet processing line will have a certain amount ...

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Problems solved by technology

[0007] In view of the existing technology, manual intervention is required to build the furnace area when production is resumed after maintenance, and the strip is prone to breakage in the annealing furnace and zinc pot Problem, the present invention provides a method for building a horizontal continuous annealing furnace of a cold-rolled sheet processing line

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