Journal Article

Thermodynamic analysis of the compositional control of inclusions in cutting-wire steel

Jing Zhang Fu-ming Wang Chang-rong Li

2014

Overview

Data from a thermodynamic database and the calculation software FactSage were used to investigate the phase diagrams of the MnO？CaO？SiO2？Al2O3 system in cutting-wire steel and the effects of oxide components on the low-melting-point （LMP） zone in the cor-responding phase diagrams. Furthermore, the activities of oxide components in the quaternary system at an Al2O3 content of 25wt%were calculated. The contents of dissolved [Al] and [O] in liquid steel in equilibrium with LMP inclusions in the MnO-CaO-SiO2-Al2O3 system were optimized. The results show that the MnO-CaO-SiO2-Al2O3 system possesses the largest LMP zone （below 1400℃） at an Al2O3 content of 25wt%and that the CaO content should be simultaneously controlled in the range of 40wt%to 45wt%. The activities of the oxide components CaO, MnO, and SiO2 should be restricted in the ranges of 0 to 0.05, 0.01 to 0.6, and 0.001 to 0.8, respectively. To obtain LMP inclusions, the [Al] and [O] contents in cutting-wire steel must be controlled within the ranges of 0.5 ×10^-6 to 1.0 ×10^-5 and 3.0 ×10^-6 to 5.0 × 10^-5, respectively.

• Publisher: University of Science and Technology Beijing,Springer Nature B.V,School of Metal urgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China
• Subject: Al2O3含量 / Aluminum / Aluminum oxide / Calcium oxide / Ceramics / Characterization and Evaluation of Materials / Chemistry and Materials Science / Composites / Corrosion and Coatings / Cutting / Glass / Inclusions / Liquid alloys / Manganese oxides / Materials Science / Mathematical analysis / Melting points / Metallic Materials / Natural Materials / Oxides / Phase diagrams / Quaternary systems / Silicon dioxide / Steel / Steels / Surfaces and Interfaces / Thermodynamics / Thin Films / Tribology / Wire / 切割线 / 夹杂物 / 控制 / 热力学分析 / 热力学数据库 / 组成 / 钢液