针对莱钢异型坯连铸机实现全保护浇注的要求，开发了一种超扁平形状的浸入式水口。该水口工作端采用了双侧孔结构，并结合不同浇注断面和拉速进行了导流方式优化，主要依据来自于结晶器内钢水流动、自由液面波动以及传热凝固等综合冶金行为的数值预报结果。热态生产试验指出，采用单支扁平形状浸入式水口实现异型坯连铸全保护浇注是可行的，所设计浸入式水口具有显著稳定结晶器熔池液面和促进保护渣熔化的作用，使用寿命初步达到要求，铸坯内外质量得到明显改善。
A super-flat shaped submerged entry nozzle (SEN) was developed for Laigang Beam blank Caster to achieve full protection casting. The nozzle has bilateral pore structure at the end of work outlet, and its diversion mode has been optimized by different casting speed and cross-section, which based on the molten steel flow of mold, free surface fluctuation and a comprehensive metallurgical behavior such as heat transfer, solidification etc. Thermal production test show it is feasible that the use of single flat shape SEN beam blank continuous casting to achieve full protection of casting. The SEN design had significant mold pool surface stability and the promotion of the role of mould powder melting, life Initial meet the requirement, both inside and outside the slab quality significantly improved.
参考文献
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%