DEVICE AND METHOD FOR IMPLEMENTING CORE REDUCTION TECHNOLOGY IN CONTINUOUS CASTING ROUND BILLET SOLIDIFICATION PROCESS

摘要

A device and method for achieving core reduction technology in a continuous casting round billet solidification process. A plurality of round billet radial reduction devices (2) are distributed outside the reduction range of a round billet (1) in an array in the axial direction of the round billet; an area from a position where the solid fraction of the round billet reaches 0.65 to a solidification end point of the round billet serves as the reduction range; the round billet radial reduction devices comprise a plurality of reduction rolls (3) which are circumferentially distributed in an array along the central axis of the round billet; forming holes (5) used for the extrusion of the round billet are formed among the plurality of reduction rolls; the shapes from the forming holes near the round billet forming end to the forming holes near the round billet solidification end are gradually changed from triangles or ovals to circles; every two adjacent round billet radial reduction devices are arranged in a staggered manner; water draining plates (4) are arranged outside all the reduction rolls; and the reduction rolls of the round billet radial reduction devices have the function of opening and closing in the radial direction of the round billet. By means of the device and method, the problem about loosening, segregation and other detects in the core of the continuous casting round billet can be effectively solved, the yield of the continuous casting round billet can be improved, and the production cost can be reduced.