It is a challenge to produce peritectic steels through compact strip production (CSP) technology, due to the large volume shrinkage during the initial solidification of peritectic steels and dramatic thermodynamics variation caused by the significant improvement of casting speed. Herein, two mold fluxes are developed to meet the demands for producing peritectic steels by CSP technology. The results show that the developed mold flux MF‐2 achieves the balance between the heat transfer control and mold lubrication, by increasing the CaO/SiO₂ ratio to a particular point at 1.25 and the addition of Li₂O content. The oxides of CaO and Li₂O act as network breakers that will provide more O²⁻ ions to depolymerize the original silicate structure, which in turn promote the mold flux crystallization capability and an effective heat transfer control. Meanwhile, the system viscosity of MF‐2 is lowered; also a good flow fluidity and break temperature are achieved to guarantee an appropriate mold lubrication behavior. In addition, the further addition of Li₂O could lower the melting temperature to ensure a certain thickness of liquid layer as well. Therefore, MF‐2 shows the best overall performance and could be applied to industrial operations.

中文翻译：

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CaO-SiO2基MgO / Li2O改性铸铁熔剂体系的综合研究

通过包钢生产（CSP）技术生产包晶钢是一个挑战，因为包晶钢在初始凝固过程中会产生大量体积收缩，并且浇铸速度的显着提高会引起剧烈的热力学变化。在此，开发了两种保护渣，以满足通过CSP技术生产包晶钢的需求。结果表明，通过将CaO / SiO ₂比提高到1.25的特定点并添加Li ₂ O含量，开发出的保护渣MF-2在传热控制和保护渣润滑之间达到了平衡。CaO和Li ₂ O的氧化物充当网络破坏者，将提供更多的O ²⁻离子使原硅酸盐结构解聚，进而促进了保护渣的结晶能力和有效的传热控制。同时，MF-2的系统粘度降低；同时还具有良好的流动流动性和断裂温度，以确保适当的模具润滑性能。另外，进一步添加Li ₂ O可以降低熔融温度以确保一定厚度的液体层。因此，MF-2表现出最佳的整体性能，可应用于工业生产。