【摘要】 结合两种二冷水冷模型 ,对微合金钢铸坯的微观组织、高温延塑性能、应力分析、鼓肚变形以及二冷水模型模拟、铸坯表面温度实测等进行了系统的研究。研究表明 ,铸坯表面温度落入钢的第三次脆性温度区是造成铸坯表面横裂的一个重要原因。提出了改善铸坯内部质量和表面质量的有效途径更多还原

【Abstract】 This paper introduces a detailed study on microalloyed slab with respect to microstructure,high temperature ductility,strain and stress analysis,bulging deformation as well as secondary cooling model simulation,actual measurements of slab surface temperature on the basis of two different secondary cooling patterns.The research results showed that the slab surface temperature dropping into the third brittle zone played an important role in causing transverse crack formation of microalloyed slab.Effective measures to improve slab quality,both internal and surface,are given in this paper.更多还原