倒角结晶器在涟钢板坯连铸生产中的应用

 为了消除微合金化钢连铸板坯的角部裂纹缺陷，使得板坯在不进行离线切角的条件下满足轧制要求，采用倒角结晶器技术进行了大量的工业试验，分析并解决了倒角型板坯存在的角纵裂及结疤问题，实现了该技术的规模化连续生产。工业应用结果表明，倒角结晶器技术不仅能够控制板坯的角横裂缺陷，而且能够大幅度降低超低碳钢热轧板卷边直裂的发生率，因此可为钢铁企业带来巨大的经济效益。

Application of Chamfered Mould on Slab Continuous Casting Production in Lianyuan Iron and Steel Company

In order to eliminate continuous casting slab corner crack defects of micro-alloyed steels so that the slab can meet rolling need when it is unnecessary to offline cut the corner, a lot of industrial trials were made by using the chamfered mould technology. The problem that there were some longitudinal corner cracks and sticking scars were analyzed and solved. For this reason, the chamfered mould technology can be used for large-scale continuous production. Industrial applied trials results show that the chamfered mould technology can not only control slab corner transverse cracks but also reduce substantially the rate of side direct crack occurred on the surface of hot rolling sheet of super low carbon steel. Therefore, the chamfered mould technology can bring huge economic benefit for iron and steel company.