作者：廖艳飞^1,2, 王晓东², 那贤昭¹

作者单位：1. 钢铁研究总院先进钢铁流程及材料国家重点实验室, 北京 100081;
2. 中国科学院大学材料科学与光电技术学院, 北京 100049

关键词：LiMCA;金属液纯净度;夹杂物检测;电阻脉冲;电磁场测量

摘要：

原位、在线、定量的金属液纯净度监测技术因其重要的生产实际意义一直是冶金工作者梦寐以求的技术。该文对加拿大麦吉尔大学开发的LiMCA的原理、发展历史、研究手段、技术特点、应用场合进行综合分析,系统阐述国内外对这一技术的研究成果。目前,LiMCA技术已在铝工业以及熔点低于铝的金属液纯净度监测方面获得成功应用,然而,将其应用于钢铁等高温熔体时却遇到一些问题。最后,该文指出LiMCA存在的先天不足(基于接触式的测量原理),提出非(机械)接触式的洛伦兹力微颗粒探测法,有望解决高温金属液纯净度的监测问题。

In situ, online and quantitative monitoring of liquid metal cleanliness method -review and prospect of LiMCA

LIAO Yanfei^1,2, WANG Xiaodong², NA Xianzhao¹

1. State Key Laboratory of Advanced Steel Processing and Products, Central Iron and Steel Research Institute, Beijing 100081, China;
2. College of Materials Science and Opto-electronic Technology, University of Chinese Academy Sciences, Beijing 100049, China

Abstract: The in situ, online and quantitative monitoring methods for metal liquid cleanliness have always been coveted by the metallurgists because of their practical significance. In this thesis, the authors have reviewed the operating theory, developing history, research instruments, technical features and industrial applications of the LiMCA(liquid metal cleanliness analyzer) technology developed by the Canadian McGill University and have systematically elaborated the domestic and foreign research findings of this technology gained in the last three decades. At present, the technology has been applied in the aluminum industry, but some critical problems occurred when it was used in iron and steel and other high-temperature melts. In the end, the authors have pointed out that this technology is unfit for high-melting-point melt because of its inherent deficiencies (contact-based measurement principle) and alternatively proposed the Lorentz force particle analyzer (LFPA), a non-contact electromagnetic induction method expected to solve the problems in monitoring the cleanliness of high temperature liquid metals.

Keywords: liquid metal cleanliness analyzer;cleanliness of molten metal;inclusion detection;resistance pulse;electromagnetic field measurement

2016, 42(2): 1-8  收稿日期: 2015-7-10;收到修改稿日期: 2015-9-21

基金项目: 中国科学院“百人计划”项目(111800M105);国家自然科学基金面上项目(51374190)

作者简介: 廖艳飞(1990-),女,硕士研究生,专业方向为金属液纯净度检测及连铸坯振痕检测。

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