动态轻压下位置对400mm特厚板坯中心偏析的影响  

Effect of the position of soft reduction on the central segregation of 400mm ultra-thick slabs

作　　者：甄新刚[1] 朱志远[1] 蒋海涛[1] 李景光[1] 王玉龙[1] 白占禄[1] 赵晶[1] 孙博[1] 

机构地区：[1]秦皇岛首秦金属材料有限公司,河北秦皇岛066000

出　　处：《炼钢》2012年第2期20-23,共4页Steelmaking

摘　　要：介绍了秦皇岛首秦金属材料有限公司400 mm特厚板坯生产现状,分析了动态轻压下位置对特厚板坯中心偏析的影响,结果发现:延长两相区及固相区的轻压下区间,有利于改善特厚板坯的中心偏析。根据C、S化学分析结果,发现400 mm特厚板坯与250 mm中厚板坯中心偏析类型相一致,宽度方向钢液成分分布不均匀,液相穴呈"W"形。The present paper introduces the production status of 400 mm ultra-thick slabs and analyzes the influence of the position of soft reduction on the central segregation of ultra-thick slabs. Results show that expansion of the space between the dual phase zone and the solid phase-is more beneficial to improve the central segregation of the ultra＇thick slab. Results of C and S chemical analysis show that the central segregation of 400 mm ultra-thick slab is similar to that of 250 mm medium gauge slab and the distribution of chemical compositions of the liquid steel in the width direction is uneven and the liquid pool is in a W shape.

关 键 词：特厚板坯 中心偏析 轻压下 固相率 

分 类 号：TF777[冶金工程—钢铁冶金]