Research of Refining Molten Steel in Medium Frequency Induction Furnace
Considering medium-frequency induction furnace lack of refining function and overproof problem of the content of inclusion and gas.Installing ventilating brick at bottom of furnace for blowing argon was developed and industrial experiment was carried out.Results show that under the pressure intensity of bottom argon blowing 0.3~0.4 MPa and the time 25~30 min,the perfect effect was achieved.The contents of and [H] of molten steel are under 30 ppm、45 ppm and 2.0~2.5×10-4%,respectively.The content of non-orbicular inclusion is under the criterion of forging,the content of orbicular inclusion decreases 47.33%~56.57%.