CAJ | 학술논문

为了得到适宜高速连铸用的浸入式水口，利用粒子图像测速系统（PIV）和 DJ800水工测量系统，采用水模拟方法对不同结构的四孔浸入式水口（SEN）进行了模拟试验，研究不同出口面积比（分别为212、323、111和121），上导流岛夹角θ（分别为20°、40°、60°和80°），以及下导流岛夹角α（分别为60°、80°、100°和120°）对结晶器内流场涡心位置、波动等的影响。结果表明，浸入式水口出口面积比和上下导流岛夹角对流场有明显的影响，当出口面积比为121，上导流岛夹角为80°，下导流岛夹角为100°时，结晶器内流场结构较合理。
위료득도괄의고속련주용적침입식수구，이용입자도상측속계통（PIV）화 DJ800수공측량계통，채용수모의방법대불동결구적사공침입식수구（SEN）진행료모의시험，연구불동출구면적비（분별위212、323、111화121），상도류도협각θ（분별위20°、40°、60°화80°），이급하도류도협각α（분별위60°、80°、100°화120°）대결정기내류장와심위치、파동등적영향。결과표명，침입식수구출구면적비화상하도류도협각대류장유명현적영향，당출구면적비위121，상도류도협각위80°，하도류도협각위100°시，결정기내류장결구교합리。
Quadripuntal four submerged entry nozzles (SEN )with different structures were researched using water simulation tests by particle image velocimetry (PI V)and DJ800 hydraulic measurement sys-tems to get a suitable SEN for high efficiency continuous casting.The influences of the exit area ratio (2 1 2,3 2 3,1 1 1 and 1 2 1),upper guide island angle θ(20°,40°,60°and 80°),and lower guide is-land angle α(60°,80°,100°and 120°)on the vortex position in the mold and fluctuations were researched. The results show that the exit area ratio,and the included angle between upper and low guide islands have obvious influence on the flow field;the flow field in the mold is suitable at 1 2 1 of the exit area ratio,80°of upper guide island angle,and 100°of lower guide island angle.