Abstract
The Cr18 - Mn18 steel was prepared by the high temperature and high pressure reaction kettle. With bottom blowing time and bottom blowing flow as object to do single factor experiment, the relationship between the nitrogen content in steel smelting process and the bottom blowing time, the bottom blowing flow were studied.The research results show that when the other conditions must be, the nitrogen content in steel increases with the bottom blowing time increasing gradually, when the bottom blowing time reach more than 35 min, the variation of nitrogen content in steel decreases. With the increase of bottom blowing flow rate, the nitrogen content in steel increases gradually, when the bottom blowing flow rate reaches more than 0.24 m3/h, the nitrogen content in steel close to the maximum value and does not change with bottom blowing flow rate.
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