A temperature control method for an annealing furnace zone

Abstract

The invention discloses a method for controlling the temperature of an annealing furnace area, which includes the steps of information collection, data processing, and temperature setting. The speed information of the steel strip is collected at the PLC controller, and the time is integrated according to the speed value to obtain The location information of the specific furnace area where the steel strip is located; the information matching system calculates the required annealing temperature value of the steel strip according to the steel type and thickness information, and when the steel strip arrives at the furnace area, the temperature of the furnace area is adjusted accordingly The adjustment and change of the steel strip can avoid the phenomenon of hysteresis or advance in the temperature control and the position of the steel strip, and ensure that the steel strip is annealed at the correct set temperature, thereby protecting the annealing quality of the steel strip and improving the qualified rate of the product. In addition, when the steel strip is broken, the distributed control system can quickly search and calculate the location information of the steel strip, quickly perform positioning, shorten the processing time of the broken strip, and improve work efficiency.

Description

technical field [0001] The invention belongs to the field of steelmaking, and in particular relates to a method for controlling the temperature of an annealing furnace zone. . Background technique [0002] When annealing the steel strip, it is necessary to set the corresponding annealing temperature value in the furnace area according to the steel type and thickness of the steel strip to ensure the quality of the annealed steel strip. [0003] The currently used control method for the temperature of the furnace area is that the PLC controller detects the steel strip at the entrance of the furnace area, and automatically uploads the information such as the steel type and thickness of the steel strip to the information matching system, and the information matching system uploads it according to the PLC controller. information, find the matching formula containing temperature control parameters, and calculate the set temperature value according to the temperature control param...

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Problems solved by technology

[0004] The above-mentioned control method completes the annealing treatment of the steel strip by controlling the temperature variation of each furnace zone at the same time when the production line is in normal operation. Leaving the furnace area, if the control temperature of the next steel strip changes greatly, the furnace temperature changed in advance will seriously affect the annealing quality. In addition, when the production line speed is fast, the next steel strip arrives at the furnace area in advance, and the corresponding The control temperature has not changed in time, and the temperature control is not accurate, which will also affect the annealing quality of the next steel strip, which is not conducive to improving the qualified rate of the product

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