鲁素玲,张秀照,郭志红,王丽娟,韩鹏彪

• 1:河北科技大学材料科学与工程学院
• 2:河北省材料近净成形技术重点实验室
• 3:邢台正锟机械轧辊有限公司

摘要(Abstract)：

为解决高铬钢复合轧辊离心复合铸造生产中的结合层夹渣问题,以复合铸造过程数值模拟与夹渣物XRD分析相结合,分析了该夹渣成分及分布原因。首先,通过宏观检查并利用XRD实验定性分析了夹渣物的组成,初步确定了夹渣物为生产中高温反应生成的非金属夹渣,且集中分布于辊身冒口端。其次,采用数值模拟的方法分析了高铬钢轧辊复合铸造的生产过程,对比研究了离心铸造和重力铸造2个阶段辊身冒口端与底端的高温金属流动与温度场演变差异。模拟结果表明:芯部重力铸造时,芯部高温金属液对轧辊外层冲刷作用的差异是夹渣物主要分布于辊身冒口端的重要原因。通过复合铸造过程流场与温度场的模拟结果,对高铬钢复合轧辊结合层夹渣物的产生和分布原因进行分析,对于改善离心铸造轧辊缺陷的产生具有借鉴意义。

关键词(KeyWords)： 材料的组织、结构、缺陷与性能;夹渣;结合层;高铬钢复合轧辊;复合铸造;数值模拟

Abstract:

Keywords:

基金项目(Foundation): 河北省重点研发计划自筹项目(18211040)

作者(Author): 鲁素玲,张秀照,郭志红,王丽娟,韩鹏彪

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