Method and apparatus for
continuous casting, especially
casting of steel that can easily provide high quality steel that has no central segregation and central
porosity. In other words, in the method and apparatus, central defects are to be eliminated first by identifying the solidifying conditions in the full range from the
meniscus (the surface position of the upper portion of
molten metal) to the crater end (a final solidification position), based on the type (profile) of
continuous casting machine, type of steel, cross-sectional shape and size of a cast piece and the operating conditions such as
casting speed,
casting temperature and cooling conditions, with special attention paid to the pressure drop of
liquid phase induced by the liquid flow between dendrites resulting from the solidification contraction in casting direction in the
solid-liquid coexisting zone, second by calculating the condition of the formation of the above internal defects and their positions, and finally by applying an electromagnetic
body force (
Lorentz force) in the casting direction in the vicinity of the region where the internal defects are formed.