Longitudinal and transverse corner crack defects were found on the slab surface for peritectic steel grade Q235G cast in Panzhihua Iron and Steel Group Company.

• 针对攀钢连铸Q235G等包晶钢生产中出现的铸坯表面裂纹问题,在调查分析裂纹特征及其产生原因的基础上,发现保护渣传热过强和保护渣流入不均是诱发角横裂产生的主要原因。