宽厚板铸机中间裂纹的控制策略研究  

Study on the Control Tactics of Halfway Cracks in Slab for Wide Thick Plate

作　　者：蔡可森 缪春锋 耿建林 李海军 张炯明[2] 

机构地区：[1]南京钢铁股份有限公司中厚板卷厂,江苏南京210035 [2]北京科技大学冶金与生态工程学院,北京100083

出　　处：《中国冶金》2011年第5期36-39,47,共5页China Metallurgy

摘　　要：通过酸浸低倍等手段,获取中间裂纹产生的位置和规律。采取提高铸机辊缝精度、优化二冷水强度、调整动态轻压下区间等手段,中间裂纹的发生率由66.7%下降至11.7%,同时改善了中心偏析和中心疏松,提高了铸坯的质量。Methods of acid etch test for macro-structures was adopted to get the halfway cracks location and regularity.By improving precision of conticaster roll gap,optimizing the intensity of second cooling water,adjusting the zone of dynamic soft reduction and so on,the incidence rate of halfway cracks was reduced from 66.7% to 11.7%,center segregation and center porosity were improved,the quality of the slab was raised to a much higher level.

关 键 词：中间裂纹 中碳低合金钢 动态轻压下 内部质量 

分 类 号：TG245[金属学及工艺—铸造]