Control method for preventing buckling of hot-dip galvanized thin-specification product

• Main Authors: XIE YIKANG, LANG JUN, CHEN ZHONG, CHEN DECHUN, QIAN XIN
• Format: Patent
• Language: Chinese; English
• Published: 06.08.2021
• Subjects: ALLOYS; 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; FERROUS OR NON-FERROUS ALLOYS; 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; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The invention provides a control method for preventing buckling of a hot-dip galvanized thin-specification product. According to the method, the problem of buckling of the thin-specification hot-dip galvanized strip steel in a furnace is solved by controlling the running speed, tension, temperature, cooling rate, heating rate and the like of the strip steel in the vertical annealing furnace, stable production of thin-specification hot-dip galvanized steel plates in similar hot-dip galvanizing units is realized, the qualification rate of thin-specification products is improved, the manufacturing cost is reduced, and hot-dip galvanized ultimate thin-specification products meeting customer requirements are produced. The method does not need to change the existing process path, and the implementation cost is low. 本发明提供了一种热镀锌薄规格产品防止瓢曲的控制方法，本发明通过控制带钢在立式退火炉运行速度、张力、温度、冷却速率及升温速率等方式，解决了薄规格热镀锌带钢炉内瓢曲的问题，实现了薄规格热镀锌钢板在同类热镀锌机组的稳定生产，提高了薄规格产品的合格率，降低了制造成本，生产出满足客户需求的热镀锌极限薄规格产品。本发明方法无需改变现有的工艺路径，实施成本低。