Characteristics of Nitrogen Jet and Its Effect on the Bath in Slag Splashing

The measured results show that the overexpanded supersonic jet velocity produced by low stagnation pressure (0.53 MPa) attenuates quickly, deviates greatly with smaller impact area and large energy loss. According to the measured results and the analysis of lashing energy of jet on the bath, the technological parameters of nitrogen flow in slag splashing were proposed.

冶炼、溅渣两用型喷枪的改进和应用

30t氧气转炉由于供氧压力不足和转炉装入量增大 ,以及溅渣护炉工艺的应用 ,对喷枪的工作特性提出了新的要求 ,据此设计了新的氧枪喷头。经射流特性测试及实际吹炼表明 。

溅渣护炉中氮气射流的特性及其对熔池的作用

溅渣护炉中氮气射流的实测结果表明，低滞止压力（０．５３ＭＰａ）所产生的过膨胀超音速射流速度衰减快、偏移量大、冲击面积小、射流能量损失大。根据实测结果和射流对熔池的冲击能量分析，提出了溅渣护炉喷吹氮气的工艺参数。