The invention relates to a high-
carbon steel continuous casting billet center
quality control method, and belongs to the technical field of high-
carbon steel continuous casting billet preparation methods. In order to solve the problems that an existing high-
carbon steel continuous casting billet is prone to being low in center density, obvious in
porosity and shrinkage cavity defect and serious in segregation, the center
quality control method for the high-carbon steel continuous
casting billet is provided, a converter / electric furnace-refining-vacuum-continuous
casting technology is adopted, and the C content, the P content and the S content of finished steel are controlled; according to the
tundish molten steel superheat degree, the pulling speed is controlled in a linkage mode, the crystallizer cooling water amount is 2450 L / min, the crystallizer
electromagnetic stirring parameter is 150 A / 2 Hz, and the
tail end
electromagnetic stirring parameter is 400 A / 6 Hz. According to the method,
smelting-continuous
casting full-process closed-
loop control is adopted, parameters of all working procedures are cooperatively regulated and controlled, impurities are controlled from the source, the superheat degree and the pulling speed are accurately controlled, center segregation, looseness, shrinkage cavities and microcracks of the high-carbon steel continuous casting billet are effectively restrained, and the quality stability and the
machining qualification rate of the casting billet are remarkably improved.