Chemical Composition Control of Non-Metallic Inclusions in High Alloy Steel Production Process

作     者：Naoya SATOH Takahiro MIKI Mitsutaka HINO 

作者机构：Department of Metallurgy Graduate School of Engineering Tohoku University now Yasuki Works Hitachi Metal Corporation Department of Metallurgy Graduate School of Engineering Tohoku University Professor Emeritus Tohoku University now Hokkaido Polytechnic College 3-130 Zenibako Otaru Hokkaido 047-0292 Japan 

出 版 物：《Journal of Iron and Steel Research International》 (钢铁研究学报(英文版))

年 卷 期：2011年第18卷第S2期

页      面：275-282页

核心收录：

学科分类：080602[工学-钢铁冶金] 08[工学] 0806[工学-冶金工程] 

主　　题：high alloy steel non-metallic inclusion deoxidation equilibrium redlich-Kister type polynomial regular solution model 

摘      要：There is a close relation between the characteristics of products and the chemical composition control of inclusions in steelmaking process. Therefore, it is very important for a warranty of product’s characteristics to improve inclusion quality resulting in defective products. In the present work, the control technique of inclusions’ chemical composition is discussed thermodynamically based on the Redlich-Kister type polynomial to metallic solution and regular solution model to molten oxide solution. It is very effective for the precise chemical composition control of oxides to determine the concentration of deoxidizers based on the thermodynamic relation among dissolved deoxidizers and oxygen, because it is known that oxide inclusions are equilibrated with them in molten steel in the steel making process. High alloy steel production process was focused in the present work.