Development of RH refining technology at Baosteel

With the strong demand for the development of automobile sheets,tin plates,household appliances,silicon steel,pipeline steel and other products as well as for the quality improvement of steel products,remarkable progress has been made in RH refining technology and equipment design since Baosteel began production more than 20 years ago. The vacuum degassing ratio of Baosteel has jumped from 35% in the initial stage when Baosteel began production,to the current ratio of approximately 60%,and will soon reach 75% in the near future.The independent innovations in RH refining technology in Baosteel,such as RH equipment optimization,vacuum decarburization,inclusion control, deoxidation,desulfurization,rhythm adjustment between primary steelmaking and continuous casting,the high efficiency of the RH refining process,and other aspects of RH technology,have all effectively met the requirements of developing new steel products,quality improvement and logistical control.Complete sets of RH equipment and refining technology have been successfully exported to the domestic steel plants.In the future,Baosteel will make further efforts to improve efficiency,stabilize production and quality,and realize special line production,so that the RH degasser will play a greater role in Baosteel.