Influence of insertion depth of straight nozzleon flow field for 220 mm×260 mm billet continuous casting mold
HUANG Yong-sheng1， SUN Guang-tao1， MA Cheng-you2， BAO Yan-ping2， WANG Min2
（1. Special Steel Company， Zenith Steel Group Co.， Ltd.， Changzhou 213011， Jiangsu， China 2. State Key Laboratory of Advanced Metallurgy， University of Science and Technology Beijing， Beijing 100083， China）
Abstract：The flow state of the molten steel will directly affect the quality of the final casting. The unreasonable flow field can lead to relatively largesurface flow velocity and comparatively large fluctuation of the meniscus， which will cause the slag entrapment.The effects of different insertion depthsonsurface fluctuation， surfaceflow velocity， flow field distribution， impact depth， and surface mold powder covering of 220 mm×260 mm billet mold were studied by the geometric similarity 1：1 water model and Fluent fluid mechanics software. The results show that the flow of the straight nozzle is concentrated； the impact depth is comparatively large； the fluctuation of the liquid surface is uniform； the fluctuation is less affected by the immersion depth and the casting speed. The slag layer is well covered and the slag layer is uniform and the possibility of slag entrapment is comparatively small. Comprehensively considering the influence of the impact depth， the active degree of mold powderand mold electromagnetic stirring， the appropriate nozzle insertion depthis 80 to 100 mm.
黄永生， 孙光涛， 马铖佑， 包燕平， 王 敏. 直通型水口浸入深度对220 mm×260 mm方坯结晶器流场影响[J]. , 2017, 36(5): 17-22.
HUANG Yong-sheng， SUN Guang-tao， MA Cheng-you， BAO Yan-ping， WANG Min. Influence of insertion depth of straight nozzleon flow field for 220 mm×260 mm billet continuous casting mold. , 2017, 36(5): 17-22.
2017, Vol. 36 
