Outlook on the next-generation research on steelmaking Part 2. Technological trends and research prospect on continuous Casting processes in Japan

摘要

In pursuit of higher hot charge ratio, that is, better quality through higher productiivty, initial solidification control and flow control technology in the mold will be further advanced. For initial solidification control, the development of new mold system including optimization of mold flux enables the production of higher surface quality slabs during high speed casting. In response to increasing stringent requirements ith respect to inclusion in the outer layer of slab, new type of flow modification in the mold will need to be an ongoing task. Here the application of electromagnetic force is expected to play a major role. From the stand point of fundamental research, it may be said that some of the important research tasks as the underpinnings of the next-generation steelmaking process will include; the substantial understand of the deoxidization, the formation of the shell at early stage, the behavior of bubbles and inclusions both in the bulk liquid steel and at the solidification front, and the oxides metallurgy which permit the intentional control of properties of steel at the casting stage.