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为改善特大断面连铸方坯热容量大、传热效率低等问题,基于结晶器传热学理论分析,提出复合式结晶器新技术。针对此结晶器,在保证铜板正常工作情况下,采用耦合方法,分析铜板、内冷却器的温度场及热应力分布。结果表明,铜板温度最高为230.8℃,热应力最大为261 MPa;内冷却器最高温度为406℃,应力为399 MPa,对内冷却器结构材料要求提高。该计算结果及方法可为结晶器铜板设计及工业应用提供参考。
In order to improve the large heat capacity and low heat transfer efficiency of super large continuous casting billet, based on the theoretical analysis of heat transfer of mold, a new technology of compound mold was put forward. Aiming at this mold, the coupling method was used to analyze the temperature field and thermal stress distribution of copper plate and internal cooler under the condition of ensuring the normal working of copper plate. The results show that the maximum temperature of copper plate is 230.8 ℃ and the maximum thermal stress is 261 MPa. The maximum temperature of internal cooler is 406 ℃ and the stress is 399 MPa. The calculation results and methods for the copper mold design and industrial applications provide a reference.