| 摘要 |
The invention relates to a die cavity of a casting die for continuously casting billets, blooms and blanks, steel being cast in a die cavity having a cross-section with a partially curved peripheral (42) line, and cavity walls cooled. The aim of the invention is to create optimum conditions for a regular heat exchange between a forming strand shell and the die cavity wall along the peripheral line (42) of the strand cross-section, and to avoid solidification defects in the strand shell. To this end, the degree of curvature 1/R is reduced at least on part of the curved peripheral line (42) of the comer regions from peripheral lines (42', 42") of the same corner regions, that are successive in the casting direction, and at least over part of the length of the die, in the concave corner regions of the die cavity, in order to control the targeted closure of the gap between the strand shell and the cooled die cavity, or a targeted strand shell deformation.
|
