连铸工艺在采用伸入水口—保护渣浇注、气体保护或液氮保护等措施后,铸坯表面质量大有改善。而铸坯的皮下夹杂、针孔、中心偏析、中心缩孔和内裂等问题,由于电磁搅拌的应用,这些缺陷有的得到克服,有些变得轻微,铸坯质量进一步提高。所以近十年来,世界各国都相继在连铸机上试验和应用此技术措施。 Continuous casting process using the extension into the nozzle - mold casting, gas protection or liquid nitrogen protection and other measures, the slab surface quality greatly improved. The slab inclusions, pinholes, center segregation, center shrinkage and internal crack and other issues, due to the application of electromagnetic stirring, some of these shortcomings have been overcome, some become minor, further improve the quality of slab. Therefore, in the past ten years, all countries in the world have successively tested and applied this technical measure on the continuous casting machine.