Course Analysis and Prediction Principle of Steel Leakage in Continuous Casting Mold
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摘要: 介绍了结晶器内粘结漏钢的发生过程及变化特点,展示了粘结坯壳撕裂处的形貌特征。通过几何方法解析粘结撕裂线的扩展规律及粘结过程中的温度传递特征;根据横向和纵向温度传递时间相等的原则进行热电偶布置,以提高预报准确性。此外,分析了结晶器内几种典型的温度变化模式,并补充了两种非典型的粘结漏钢温度变化模式,为粘结漏钢和铸坯表面缺陷的准确有效动态识别提供了参考和依据,从而为开发基于热电偶测温的先进漏钢预报系统奠定了良好的基础。Abstract: Course and characteristics of sticking leakage of molten steel in mold was introduced and appearance feature of tear position in sticking shell was unveiled in this paper.Expansion pattern of tear lines caused by sticking and characteristics of temperature transmission in the process of sticking were analyzed by geometric method.In order to improve the accuracy of prediction,horizontal and vertical temperature transmitting behavior should be detected simultaneously,and thus the thermocouple should be laid according to the rule of the equivalence of horizontal and vertical temperature transmitting time.In addition,several typical temperature changing patterns were studied and two atypical temperature patterns of sticking leakage were added,which can provide reference and basis for correct dynamic recognition of sticking leakage and surface defects of shells.Thus,a foundation has been laid for the development of advanced leakage prediction system based on temperature measurement with thermocouple.
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