| Title |
Refining of Clean Steel by Utilizing Ladle Furnace |
| Abstract |
New refining processes have been developed to produce high quality wire rod steels. The utilization of a ladle furnace(LF) allowed decrease of blow end temperature, and hence a better dephosphorization efficiency in BOF operation, and ladle slag control process could be practicized for effective inclusion removal from the molten steel. The steel cleanness was improved through the application of ladle slag control practices. The average total oxygen content in cast products could be reduced to the extent of about l0ppm for Al-killed bearing steel and about 14ppm for Si-killed tire cord steel. In case of tire cord steel, oxide inclusions were modified to those of low melting point. |