Method for reducing temperature fluctuation of strip steel entering pot of annealing furnace

• Main Authors: ZHANG FUMING, ZHANG LIANG, REN ZHICHAO, CHEN HONGZHEN, DONG YUEJUAN, ZHANG QIUSHENG, WU YALIN, ZHANG HUANYU, LU ZHIHENG, REN WEICHAO, JIA YIFAN, TIAN YUZHU
• Format: Patent
• Language: Chinese; English
• Published: 31.05.2024
• Subjects: CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; DIFFUSION TREATMENT OF METALLIC MATERIAL; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS; METALLURGY; METALLURGY OF IRON; MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION

The invention provides a method for reducing the in-pot temperature fluctuation of strip steel of an annealing furnace, which comprises the following steps: obtaining the strip steel yield in unit time of a rapid cooling area according to the width, thickness and production running speed of the strip steel in the rapid cooling area; according to the deviation between the set value and the actual value of the outlet temperature of the soaking area, the strip steel temperature value deviation of the soaking area is obtained; according to the strip steel yield of the rapid cooling area in unit time and the strip steel temperature value deviation of the soaking area, the rotating speed correction value of the rapid cooling fan is obtained; and controlling the actual rotating speed output by the quick cooling fan according to the rotating speed correction value and the original rotating speed of the quick cooling fan. Pre-control of the rotating speed of the quick cooling fan is performed according to the soaking