Technical Research and Application on Reducing Internal Defects of Continuous Casting Billets

The test of continuous casting billet is generally used in low-power organization test method, and the low-and-time organization inspection method of continuous casting billet is a sulphur seal test, hot acid etching, cold acid etching, electrolytic corrosion and dendrite corrosion, etc.. The hot acid etching low times microstructure defects of continuous casting billet were analyzed, identified the main categories of Xuanhua Steel Continuous casting slab defect and causes, through the implementation of the adjustment of equipment, improve water quality, optimize steelmaking process parameters and other measures, effectively reducing the various kinds of defect level, improve the quality of continuous casting billets.