Method and apparatus for continuous compression forging of continuously cast steel.

摘要

A segregation preventive or eliminative operation is performed in under the following conditions: solidified/unsolidified ratio of the solidifying block (1) is in a range of 0.5:1 to 0.9:1; ratio between the overall compression delta (mm) versus thickness of unsolidified area in the block (d mm) is greater than or equal to 0.5 or the thickness (d mm) of the unsolidified layer in the solidifying block is: 1.2 x D - 80 < d < 10.0 x D - 80 where D is the thickness of the block before compression. Casting speed may be controlled according to thickness of the solidifying shell (1a) at a crater end or near the crater end. Preferably, electromagnetic stirring (3) is performed before performing compression forging (4,5).