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STEEL QUALITY CONTROL METHOD FOR CONTINUOUS CASTING, CONTROLLING QUALITY OF STEEL MANUFACTURED ACCORDING TO THE DEPTH INDEX OF A HOOK IN A MOLD IN A CONTINUOUS CASTING PROCESS
STEEL QUALITY CONTROL METHOD FOR CONTINUOUS CASTING, CONTROLLING QUALITY OF STEEL MANUFACTURED ACCORDING TO THE DEPTH INDEX OF A HOOK IN A MOLD IN A CONTINUOUS CASTING PROCESS
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机译：连铸过程中钢的质量控制方法，根据连铸过程中铸模的深度指标控制制造的钢材的质量
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摘要
PURPOSE: A steel quality control method for continuous casting is provided to control generation of hook defects by controlling factors which affect the depth of a hook which is generated inside a mold.;CONSTITUTION: A steel quality control method for continuous casting comprises the following steps. The width of casting (A), the discharge rate (B) of molten steel which is charged from a submerged nozzle, the speed of casting (C), the degree of superheat of molten steel (T) are measured (S10). The width of casting, the discharge rate, the speed of casting, and the degree of superheat of the molten steel are measured to be used for calculating a hook index (S20). The length and inclination of each hook are produced (S30). The depth of the hook, which expresses the straight-line distance from the surface of a solidified shell to the end of the hook, is calculated (S40). The quality of a manufactured slab is controlled by controlling process factors so that the calculated depth of the hook (SD) is maintained under a predetermined reference value (S50).;COPYRIGHT KIPO 2013;[Reference numerals] (AA) Start; (BB) End; (S10) Measuring the width of casting, the speed of casting, the discharge rate of molten steel, the degree of superheat of molten steel; (S20) Calculating a hook index with the measured values; (S30) Producing the length and inclination of each hook by using the calculated hook index; (S40) Calculating the depth index of the hook by using the length and inclination of the hook; (S50) Preventing the defection of the steel by controlling the depth index of the hook
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