| 摘要 |
FIELD: metallurgy, namely continuous casting with direct reduction of steel billet in the form of ingot, rectangle, rough shape, bar or round blank. ^ SUBSTANCE: temperature of billet 1 in transition region 7 ( before and (or) after unit 8 for bending and straightening) is equalized due to isolation of respective heat separating outer surfaces 1b without cooling liquid 4 due to heat separation by zones until creation of temperature field 5 having elliptical horizontal isotherms 12. Blank 1 in dynamically changing portion 9 of light reduction is reduced while taking into account compression strength measured near separate reducing rollers 10 or roller segments 11 depending upon locally created pressure effort. Curvilinear guide 3 with device 4a for spraying cooling liquid 4 is joined with dry portion 24 operating without cooling liquid 4 and used as isolation 25 surrounding blank 1 for preventing heat sink by radiation. There is portion 9 for reduction arranged near unit 8 for bending and straightening (before or after it). Said portion 9 includes separate hydraulically controlled reducing rollers 10 or several hydraulically controlled roller segments 11. ^ EFFECT: possibility for achieving desired temperature distribution in blank, for optimizing reduction process in order to create suitable structures after solidification. ^ 19 cl, 13 dwg |
