Investigation of metallurgical phenomena related to process and product development by means of High Temperature Confocal Scanning Laser Microscopy

International Conference on Materials, Processing and Product Engineering 2015

Diéguez-Salgado, U.^1 ; Michelic, S.^1 ; Bernhard, C.^1

Department of Ferrous Metallurgy, Montanuniversitaet Leoben, Franz Josef Straße 18, Leoben

8700, Austria^1

关键词: Confocal scanning laser microscopy;    High temperature metallurgical process;    High-temperature in situ;    In-situ observations;    Infrared image furnaces;    Metallurgical process;    Solidification process;    Tools and techniques;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/119/1/012003/pdf
DOI  :  10.1088/1757-899X/119/1/012003

来源: IOP

【 摘 要 】

An increased interest for high temperature metallurgical processes appeared during the last decades, in order to achieve the high quality requirements in steel products. A defined steel cleanness and microstructure essentially influence the final product quality. The high temperatures involved in metallurgical processes and the lack of in situ observations do not only complicate the verification of simulation model predictions but also make significant conclusions regarding the industrial processes difficult. For that reason, new tools and techniques are necessary to develop. By combining the advances of a laser, confocal optics and an infrared image furnace, the High Temperature Confocal Scanning Laser Microscopy (HTCSLM) is a strong tool which enables high temperature in situ observations of different metallurgical phenomena. Next to solidification processes and phase transformations also the behavior of inclusions at different interfaces in the system steel-slag-refractory can be observed. The present study focuses on the aspects of inclusion agglomeration in the liquid steel and the inclusion behavior at the steel/refractory interface in two different steel grades. Out of the obtained experimental data, attraction forces are calculated and compared. This information provides an important basis for a better understanding of inclusion behavior in industrial processes and the therewith related process optimization, like for example the clogging phenomenon during continuous casting.