电渣炉渣皮形成机理研究  

Mechanism study of ESR ingot slag skin

作　　者：孟庆虎[1] 许立伟[1] 牛瑞新[1] 

机构地区：[1]太原钢铁(集团)有限公司,太原030003

出　　处：《材料与冶金学报》2012年第4期265-267,共3页Journal of Materials and Metallurgy

摘　　要：采用Φ710 mm×2 050 mm结晶器,ANF-6渣系,利用电渣炉生产5 t重模具钢RH13电渣锭.对重熔后产生6 mm厚度的渣皮进行断面纵向成分分析,发现渣皮形成具有分层现象,验证了渣皮"环形小熔池"渣皮形成机理.并由此提出控制渣皮厚度的控制要素:在一定范围内结晶器水温越高、铸锭收缩率越小、输入功率越大会使渣皮越薄.其中铸锭的收缩率是影响渣皮厚薄的最关键因素.Die steel RH13 was remelted by electroslag remelting with Φ710 mm×2 050 mm mould and ANF-6 slag.The results of chemical analysis of slag skin show that there was a layered phenomenon in slag skin.The forming mechanism of 'ring shaped miniature slag pool' was validated.And thus,the key factors to control the slag skin thickness was determined the higher of the water temperature of the mold was,the smaller of the shrinkage ratio was,greater input power caused slag skin thinner.The key factor affecting the slag skin thickness was the ingot shrinkage.

关 键 词：电渣钢锭 渣皮 凝固 

分 类 号：TF14[冶金工程—冶金物理化学]