摘要
论述了直弧型板坯连铸机生产硅铝镇静钢时产生皮下横裂纹的机理及原因,并找出了产生皮下横裂纹的主要原因,w(Al)高及铌增加了铸坯的裂纹敏感性。提高矫直温度和铸机二冷段设备精度,选择合适的结晶器保护渣,有利于消除皮下横裂纹。
This paper discusses the causes to form subsurface transversal crack in silicon aluminum killed steel slab with straight mold type caster. It shows that the high content of aluminum and niobium causes serious cracks. Subsurface transversal crack can be reduced by raising the straightening temperature, improving the precision of segments as well as by using suitable mold power .
出处
《钢铁研究》
CAS
2007年第1期51-54,共4页
Research on Iron and Steel
关键词
直弧型连铸机
板坯
皮下横裂纹
影响因素
预防措施
straight mold type caster
slab
subsurface transversal crack
influencingfactor
precaution
