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通过对抚顺特钢连轧厂热轧棒材及连铸生产流程进行统计、标定和分析,表明连铸坯原始缺陷可遗传至热轧棒材的表面,产生的主要缺陷是裂纹。钢中化学元素、连铸保护渣、连铸工艺参数、钢坯冷却转移和连铸设备维检等因素是影响铸坯质量的关键因素。
Through statistics, calibration and analysis of hot-rolled bar and continuous casting production process in Fushun Special Steel Continuous Rolling Mill, the original defects of continuous casting slab can be inherited to the surface of hot-rolled bar. The main defects are cracks. The chemical elements in steel, continuous casting mold flux, continuous casting process parameters, billet cooling and transfer and continuous casting equipment inspection and other factors are the key factors that affect the quality of slab.