板坯与钢板星裂问题的探讨  

An Approach to Star-Like Crack of Billet and Plate

作　　者：唐愈[1] 李凯玉[1] 张希元[1] 李乐刚[1] 谢经磊[2] 

机构地区：[1]济南钢铁集团总公司,山东济南250101 [2]山东省冶金工业总公司,山东济南250014

出　　处：《山东冶金》2000年第6期46-49,共4页Shandong Metallurgy

摘　　要：通过相关数据的统计分析,找出了化学成分、结晶器使用次数、保护渣碱度、钢板厚度、装炉方式、冷却强度等对钢板星裂的影响规律。分析星裂产生的原因是,Cu原子、硅酸盐类夹杂物富集在奥氏体晶界,降低晶界强度,诱发星裂。Through statistic and analysis of interrelat ed data the effect rules of chemical composition,using frequency of mould,basic capacity of protecting slag,plate thickness,charging mode and cooling strength,e tc on star-like crack of plate were found.Beneficating of copper atom and silic ate t ype inclusions on austenite grain boundary was main cause decreasing the grain boundary strength and bringing out the star-like cracks.

关 键 词：星形裂纹 结晶器 保护渣 冷却强度 板坯 钢板 

分 类 号：TF777.1[冶金工程—钢铁冶金] TG335.5[金属学及工艺—金属压力加工]