WU Wei
,
LIU Yue
,
LIU Liu
,
XUE Zhengliang
钢铁研究学报(英文版)
On the basis of the thermodynamic analysis and fundamental study in the laboratory, the equilibrium of the TiAlO system was investigated. The results showed that the equilibrium titanium content in the steel increased with the increase in the soluble aluminum content in the steel and the TiO2 content in the slag. Although the slag basicity decreased and Al2O3 content in the slag increased, the titanium content increased. Based on these results, the BOF smelting process of low titanium bearing steel was put forward.
关键词:
bearing steel;titanium content;experiment
LIU Yue
,
WU Wei
,
LIU Liu
,
LIU Ming
,
LI Yangzhou
钢铁研究学报(英文版)
When titanium element appears in bearing steel, it is very easy to create titanium nitride inclusion, which reduces the fatigue life of bearing steel. Based on the production data of bearing steel produced by BOF, it is found that the titanium takes its source in bearing steel; the factors affecting titanium content, and the thermodynamics behavior of titanium under smelting condition were studied. The results show that the prime reasons of titanium content increment are the soluble aluminum content and the titanium oxide of slag. The comparison between the experimental data and theoretical ones shows that there is a big declination when the soluble aluminum content of steel is higher, which is caused by the nonequilibrium reaction of slag and steel. The apparent equilibrium distribution coefficient of titanium between slag and steel is obtained by use of experimental data.
关键词:
BOF;bearing steel;titanium;thermodynamics;apparent equilibrium distribution coefficient
