The effect of time to Nitrogen solubility in steel with High pressure and bottom blowing nitrogen

摘要

The high nitrogen steel is alloy steel whose nitrogen content is more than solubility limit at atmospheric pressure[1]. Bottom-blowing high-pressure nitrogen smelting nitrogen steel has many advantages, in the paper, from the study of 18Mn18CrN, it can come to a conclusion that in the case of Temperature of 1853K, pressure of 1.0MPa, the bottom-blowing flow of 0.16m~3/h and temperature of 1873K, pressure of 1.4MPa, the bottom-blowing flow of 0.16m~3/h, With the bottom-blowing time of increased the nitrogen content in steel increases, but when the time is more the 10 minutes, the nitrogen content is saturated.