陈佳顺， 常凯华， 郑福舟， 张 章， 常立忠*

安徽工业大学冶金工程学院，安徽 马鞍山 243032

收稿日期:2018-08-13修回日期:2018-10-26出版日期:2019-06-22发布日期:2019-06-20
通讯作者:常立忠

基金资助:国家自然科学基金;安徽省高校优秀青年人才支持计划

Effect of electroslag remelting mould rotation on solidification process of M2 high speed steel

Jiashun CHEN, Kaihua CHANG, Fuzhou ZHENG, Zhang ZHANG, Lizhong CHANG?

School of Metallurgy Engineering, Anhui University of Technology, Ma?anshan, Anhui 243032, China

Received:2018-08-13Revised:2018-10-26Online:2019-06-22Published:2019-06-20
Contact:CHANG Li-zhong

摘要/Abstract

摘要： 研究了自行设计的结晶器可旋转的电渣炉的旋转速率对M2高速钢凝固过程的影响，采用双极串联?电渣重熔方法，对不同结晶器转速下所制M2高速钢的二次枝晶、冷却速率、渗透率和渣皮厚度进行统计、计算和分析。结果表明，随结晶器转速增大，M2高速钢中心和边部的枝晶被打碎，结晶器转速越快，枝晶破碎越明显。结晶器转速由0增至19 r/min，M2高速钢在中心和边部的平均二次枝晶间距分别减小19.47%和25.23%，平均冷却速率分别增大97.01%和148.06%，平均渗透率分别降低34.94%和44.04%。结晶器旋转能将渣皮厚度降低40.41%，渣壳厚度的方差由0.163降至0.003，渣皮变得均匀，增大了金属熔池向外传热，使金属熔池变浅；另一方面，M2高速钢枝晶破碎、平均二次枝晶间距减小和渗透率降低使M2高速钢在凝固过程中的偏析得到控制，因而结晶器旋转可提高M2高速钢的凝固质量。

引用本文

陈佳顺 常凯华 郑福舟 张章 常立忠. 电渣重熔结晶器旋转对M2高速钢凝固过程的影响[J]. 过程工程学报, 2019, 19(3): 581-588.
Jiashun CHEN Kaihua CHANG Fuzhou ZHENG Zhang ZHANG Lizhong CHANG?. Effect of electroslag remelting mould rotation on solidification process of M2 high speed steel[J]. Chin. J. Process Eng., 2019, 19(3): 581-588.

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