Heavy reduction technology for improving center segregation and center porosity of super-thick slabs

The invention discloses a heavy reduction technology for improving center segregation and center porosity of super-thick slabs. The heavy reduction technology is characterized in that the oil cylinder pressure of hydraulic cylinders on three sectorial sections of solidification tail ends of the continuous casting slabs ranges from 1800KN to 2500KN; and according to the solidification characteristics of steel types, the superheat degree of molten steel is controlled between 10-35 DEG C, the casting speed of a casting machine is controlled between 0.6 meter/minute and 1.0 meter/minute, the specific water flow of a secondary cooling zone is controlled between 0.4 and 0.6 liter/kilogram, large pressure is applied to one sectorial section to achieve the reduction of 5.0-12.0 millimeters, and the other two sectorial sections are slightly pressed to achieve reductions of 2-3 millimeters. The heavy reduction technology can be implemented to improve the quality of the super-thick slabs which further can be used for substituting for static ingots to produce super-thick steel plates with the thickness of 100millimeters and more, and the heavy reduction technology can achieve the high production efficiency and is environment-friendly.