A continuous casting method of high manganese alloy steel slab

Abstract

This application relates to a continuous casting production method for high-manganese alloy steel slabs, belonging to the field of steel preparation technology. The method includes: casting molten high-manganese alloy steel with a predetermined chemical composition, starting the casting machine, and increasing the casting speed from zero to a target speed with controlled acceleration to obtain a stable casting flow state; introducing the molten high-manganese alloy steel in the stable casting flow state into a crystallizer with a predetermined taper ratio for initial solidification to obtain a slab with a uniform initial shell; during the initial solidification process, continuously adding a low-basicity protective slag to the crystallizer, and controlling the addition method of the low-basicity protective slag; sending the slab that has completed the initial solidification into the secondary cooling zone of the continuous casting machine, and performing segmented cooling of the slab according to a predetermined non-uniform cooling intensity distribution, so that the surface temperature history of the slab avoids the high-temperature brittleness range of high-manganese alloy steel, thereby obtaining a high-manganese alloy steel slab.

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