针对方坯240 mm×240 mm断面生产过程中产生的铸坯内部缺陷的机理和原因进行分析、研究,并提出了相应的解决措施,通过生产实践取得了一定的效果,改善了铸坯内部质量,满足了后序轧制工艺的要求,保证了轧材的质量和成材率。 According to the analysis and research of the mechanism and reason of the internal defects in the slab produced during the production process of 240 mm × 240 mm billet, some countermeasures are put forward, and some effects are obtained through the production practice to improve the internal quality of the slab , To meet the requirements of the post-sequence rolling process to ensure the quality of rolled material and finished product rate.