Abstract：The billet produced by the 180 mm billet continuous caster in a certain factory has serious corner subcutaneous cracks. Through modeling and numerical simulation of the casting machine, the surface center and corner temperature of the casting slab solidification process are obtained. Based on the principle of uniform cooling of the secondary cooling, the simulation evaluation and optimization of the secondary cooling spray structure of the cast slab, including the cooling uniformity analysis of the cast slab in the longitudinal and circumferential directions. According to the optimized structure plan, the 10th stream and second cold spray structure of the casting machine was actually modified and the production test was carried out. Comparing the low-magnification morphology of cast slabs produced without modification (other streams) and after modification (10 streams), it is found that the subcutaneous cracks at the corners of the slab produced by 10 streams have been significantly improved.
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2021, Vol. 40 
