基于Fluent的钢水连铸下渣振动检测的初步研究.pdfVIP

第十五届全国炼钢学术会议文集 基于Fluent的钢水连铸下渣振动检测的 初步研究 田陆，王杉 （衡阳镭目科技有限责任公司北京研究所） 摘要：本文主要讨论了基于 Fluent 软件技术下，钢水连铸下渣振动检测方法的一些研究。文章按实际尺寸， 数值模拟了某钢厂连铸过程中，连铸钢包（通常称为大包）和中间包内钢水和钢渣的流动情况，同时对影响 下渣时间和大包钢余量的两个重要因素（长水口保护管插入中间包的深度和长水口的开度）分别作了对比计 算。并得到以下三个结论：1.长水口保护管插入中间包的深度越深，下渣发生的时间就越晚，但不会影响很 多；2.下水口保护管插入中间包越深，受力的突变越明显，下渣过程所受力的振幅和频率都会增大；3.大包 内钢液高度与开度之比大致在3 倍左右。 此外，根据现场技术工和操作工的描述，大包下渣时，长水口保护管的底端的振动尤为强烈，本文也对 这一情况作了数值分析，发现长水口保护管底端的振动确实强烈，频率较低，振幅较大，但这并不是下渣引 起的，从计算结果可以看出，这一部分的振动自始至终都较为强烈，且没有明显的突变。 关键词：连铸下渣、振动检测、Fluent 软件、频谱分析 Preliminary Study of Examining Residue Vibration Based on Fluent Smelt Steel Continual Casting tian Lu, Wang Shan Abstract: This text mainly talked about some researches of vibration detecting for out flow slag in continuous casting, based on software of Fluent. In the test, we imitated and created a model of a ladle and tundish of some steelworks and computed the processes of the flow inside ladle and tundish computed the two factors (the depth of the ladle-tundish inserting the tundish and jaw opening of the ladle-tundish) separately. And obtaining three conclusions as follow: 1.the deeper the ladle-tundish inserting the tundish, the later the slag flowing down, but the extent was not very large; 2. the deeper the ladle-tundish inserting the tundish, the more obviously the changes of the ladle-tundish receive, and the swing and the frequency can become larger; 3. the sides of the height of steel liquid remnant in the ladle and in the jaw opening Moreover, it was described that the skilled works on the spot discovered the b