摘要
对八流40 t中间包烘烤及浇钢过程的包壁与钢液温度进行了数值模拟计算与20CrMnTiH钢200 mm×200 mm坯连铸现场实测。结果表明,模拟计算烘烤期间中间包耐材升温缓慢,浇钢后中间包内衬耐材升温加快,第3炉外壁温度397℃,达到热平衡;第2炉结束时,计算两侧与中部钢液温度较第1炉对应位置分别升高5.2、1.5℃,计算边流与中部流钢液温差4.8℃,实测第2炉边流间与中部流间钢液温度相差4℃,中间包钢液温度均匀稳定,计算值与实测值趋势一致;烘烤包温度由900℃提高至1000℃时,第1炉中间包钢液温降减慢,水口出钢温度略增,各流间温差减少。
The numerical simulation and calculation on eight-strand 40 t tundish lining and liquid steel during roasting and casting have been carried out,and the 20CrMnTiH steel 200 mm×200 mm billet casting process has been tested in situ.The results show that tundish lining is heat up slowly during roasting and warmed rapidly with steel tapping into tundish.Temperature of the out surface of tundish for the third heat reaches to 397℃and get to heat balance.At end of the 2nd heat,steel temperature at the side and center part of tundish is respectively 5.2、1.5℃higher than the first heat,and modeling result also shows that steel temperature at center nozzle is 4.8℃higher than that at side nozzle.Actual measuring data for second heat show that steel temperature at center part is 4℃higher than at side position.Modeling results match with the measuring data and it shows that steel temperature distribution get to stable and uniform in tundish at the end of the 2nd heat.When the roasted temperature of tundish lining increases from 900℃to 1000℃,the steel temperature of the first heat reduces slowly and the steel temperature at outlet of nozzle increases a little and the temperature difference between the streams dereases.
作者
颜慧成
靖振权
侯钢铁
李金波
巩彦坤
史进强
Yan Huicheng;Jin Zhenquan;Hou Gangtie;Li Jinbo;Gong Yankun;Shi Jinqiang(Technological Center,Hansteel Company,HBIS Group,Handan 056015)
出处
《特殊钢》
2022年第5期23-27,共5页
Special Steel
关键词
八流中间包
热状态
钢液温度
Eight-Strand Tundish
Thermal State
Steel Liquid Temperature
