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中冶连铸自主开发了大方坯、扁坯辊列设计程序。大方坯、扁坯辊列程序设计中一个重要指标是夹持段长度,由鼓肚量决定,而不像板坯有鼓肚计算的一维弹性梁的经验公式,大方坯、扁坯鼓肚量的计算是一个难点。据此,开发了三维蠕变有限元鼓肚计算模型,可以计算鼓肚细节,并且考虑蠕变的影响。在此基础上,整合了几何、温度场和鼓肚程序,实现自动化计算目标,并对输出结果进行标准化。以本模型为平台,对中冶连铸现有的大方坯和扁坯铸机进行了计算,确定了夹持段标准,形成了辊列设计工具。依据此工具,给出了目前常用的断面不同拉速(即产能)对应的夹持段长度建议,供铸机设计或者改造使用。
China Metallurgical Continuous Casting has independently developed the design procedure of bloom and slab roller. Billet, billet roller column is an important indicator of the design process is the length of the clamping section, determined by the amount of drums, rather than slab bulging one-dimensional elastic beam empirical formula, bloom, slab bulging Calculation is a difficult task. Based on this, a three-dimensional creep finite element model of bulge calculation was developed, which can calculate the bulging details and consider the influence of creep. On this basis, the integration of the geometry, temperature field and drumming procedures to achieve automatic calculation of the target, and the output of the standardization. Taking this model as a platform, the existing bloom and slab caster of China Metallurgical Continuous Casting Company were calculated, and the standard of gripping section was established, and the roller column design tool was formed. According to this tool, the recommended length of clamping section corresponding to the different drawing speeds (ie capacity) of the commonly used sections is given for the design or modification of caster.