Laser-induced breakdown spectrometry -: applications for production control and quality assurance in the steel industry
Laser-induced breakdown spectrometry -: applications for production control and quality assurance in the steel industry
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DOI：
10.1016/s0584-8547(01)00214-2
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发表时间：
2001-06-29
影响因子：
3.3
通讯作者：
Sturm, V
中科院分区：
文献类型：
--
作者：
Noll, R;Bette, H;Sturm, V
灵敏度和信号处理方面的最新进展为激光诱导击穿光谱 (LIBS) 在钢铁制造和加工行业中的应用开辟了广阔的领域。分析的物质范围从高炉炉顶煤气到钢水直至成品。本文概述了 LIBS 的研发活动和首次常规工业应用。对炉顶煤气成分的持续了解可提供有关高炉工艺的信息。目前正在研究使用 LIBS 的在线监测方法来测量影响炉内能量和质量流量的碱金属。直接分析钢水可减少二次冶金中的加工时间。通过使用灵敏度增强的 LIBS，钢水中轻元素和重元素的检测限达到约 10 mug/g 及以下。钢铁生产的过程控制依赖于雄鹿的化学分析结果。使用 LIBS 开发了分析系统原型，其分析雄鹿样本的速度比传统方法快两倍。钢材的清洁度是弹簧钢、薄箔和线材制造中的关键问题。必须快速确定微观夹杂物。开发了基于 LIBS 的扫描微量分析系统，测量频率高达 1 kHz，空间分辨率 < 15 μm。为了对管件钢种进行最终检测，开发了一种使用 LIBS 的检测机，并将其引入日常工业用途以检测材料混淆。过去 20 个月内检查了超过 500 000 个管道配件。 (C) 2001 Elsevier Science B.V. 保留所有权利。
Recent progress in sensitivity and signal processing opened a broad field of application for laser-induced breakdown spectrometry (LIBS) in the steel making and processing industry. Analyzed substances range from top gas of the blast furnace, via liquid steel up to finished products. This paper gives an overview of R&D activities and first routine industrial applications of LIBS. The continuous knowledge of the topgas composition yields information about the blast furnace process. An online monitoring method using LIBS is currently under investigation to measure alkali metals, which influence energy and mass flow in the furnace. Direct analysis of liquid steel reduces processing times in secondary metallurgy. By using sensitivity-enhanced LIBS, limits of detection of approximately 10 mug/g and below were achieved for light and heavy elements in liquid steel. The process control in steel production relies on the results from the chemical analysis of the stag. A prototype of an analytical system was developed using LIBS to analyze stag samples two times faster than with conventional methods. The cleanness of steel is a key issue in the manufacturing of spring steel, thin foils and wires. Microscopic inclusions have to be determined quickly. A scanning microanalysis system based on LIBS was developed with measuring frequencies up to 1 kHz and a spatial resolution of < 15 mum. For the final inspection of the steel grade of pipe fittings, an inspection machine using LIBS was developed and introduced into routine industrial use to detect material mix-ups. More than 500 000 pipe fittings were inspected during the last 20 months. (C) 2001 Elsevier Science B.V. All rights reserved.