中间包底吹氩气在连铸过程的应用与讨论
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- 英文论文题名：Application and Discussion on tundish bottom-bubbling during Continuous Casting Process
- 论文作者：潘宏伟 ; 王胜东 ; 王浩 ; 宋佳友 ; 季晨曦 ; 曾智 ; 程树森
- 英文论文作者：PAN Hongwei ; Wang Shengdong ; Wang Hao ; Song Jiayou ; Ji Chenxi ; Zeng Zhi ; Cheng Shusen ; Shougang Research Institute of Technology ; Shougang Jingtang United Iron & Steel Co. ; Ltd ; University of Science and Technology Beijing
- 年：2016
- 作者机构：首钢技术研究院;首钢京唐钢铁联合有限责任公司;北京科技大学;
- 论文关键词：中间包 ; 底吹气 ; 夹杂物
- 英文论文关键词：Tundish ; bottom bubbling ; Inclusions
- 会议召开时间：2016-05-19
- 会议录名称：第十九届（2016年）全国炼钢学术会议大会报告及论文摘要集
- 语种：中文
- 分类号：TF777
- 学会代码：ZGJS
- 会议名称：第十九届（2016年）全国炼钢学术会议
- 会议地点：中国湖南长沙
- 主办单位：中国金属学会炼钢分会
- 学会名称：中国金属学会
- 页数：1
- 文件大小：57k
- 原文格式：O
- 会议级别：全国
摘要
本文采用了数值模拟和工业试验相结合的方法,揭示了在非等温条件下,中间包底吹气时流体的流动规律,吹气过程主导了流体流动状态,抵消了由于非等温条件引起的自然对流对流体流动的不利影响,中间包底吹氩气工艺能够有效促进夹杂物上浮,阻止夹杂物流出中间包。工业试验结果表明,中间包底吹气改善了夹杂物去除效果,使用中间包底吹气对应的铸坯,20-50μm、50-100μm、>100μm级别的夹杂物分别降低了14%、20%、67%。
Mathematical simulation and extensive plant scale trials are applied in this study.Flowing pattern in tundish with bottom bubbling is revealed on non-isothermal condition.For bottom bubbling,it almost dominates the flow pattern in tundish,and it also counteracts the negative impacts of natural convection caused by temperature difference,and then it is helpful for inclusions floating-up and removal.Plant trials results also prove that,tundish bottom-bubbling strengthening the inclusions removal effects.And for the quantity density of inclusions with size of 20-50μm,50-100μm,>100μm,it could be reduced by 14%,20%,67%respectively by bottom bubbling.
Mathematical simulation and extensive plant scale trials are applied in this study.Flowing pattern in tundish with bottom bubbling is revealed on non-isothermal condition.For bottom bubbling,it almost dominates the flow pattern in tundish,and it also counteracts the negative impacts of natural convection caused by temperature difference,and then it is helpful for inclusions floating-up and removal.Plant trials results also prove that,tundish bottom-bubbling strengthening the inclusions removal effects.And for the quantity density of inclusions with size of 20-50μm,50-100μm,>100μm,it could be reduced by 14%,20%,67%respectively by bottom bubbling.
引文