张闯,周俐,谢一夔,陈庆.圆锅流场中锌渣的物理模拟研究[J].表面技术,2018,47(12):296-306.
ZHANG Chuang,ZHOU Li,XIE Yi-kui,CHEN Qing.Physical Simulation of Zinc-slag in Circular Pot Flow Field[J].Surface Technology,2018,47(12):296-306 |
| 圆锅流场中锌渣的物理模拟研究 |
| Physical Simulation of Zinc-slag in Circular Pot Flow Field |
| 投稿时间：2018-06-03 修订日期：2018-12-20 |
| DOI：10.16490/j.cnki.issn.1001-3660.2018.12.040 |
| 中文关键词: 圆铝锌锅 锌渣 水力学模型 数学模型 |
| 英文关键词:round aluminum zinc pot zinc slag hydraulic model mathematical model |
| 基金项目:国家自然科学基金青年基金（51504001） |
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| Author | Institution |
| ZHANG Chuang | School of Metallurgical Engineering, Anhui University of Technology, Ma'anshan 243002, China |
| ZHOU Li | School of Metallurgical Engineering, Anhui University of Technology, Ma'anshan 243002, China |
| XIE Yi-kui | School of Metallurgical Engineering, Anhui University of Technology, Ma'anshan 243002, China |
| CHEN Qing | School of Metallurgical Engineering, Anhui University of Technology, Ma'anshan 243002, China |
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| 中文摘要: |
| 目的 通过水力学模型和数学模型，研究使锌渣远离钢带表面，提升钢带质量的方法。方法 设计一个锌锅的透明水模型，对该实验模型内部锌渣的运动状态进行直观地研究，分析面渣、悬浮渣、底渣在不同工艺条件下的运动状况。并建立数学模型，计算温度分布和流场分布，验证水力学模型的合理性。 结果 随着钢带拉速的增大，旋涡涡心逐渐向两侧移动，较大的钢带拉速不仅可以有效促使锌渣远离钢带表面，还可以使被卷起的底渣增多以及截面上的悬浮渣量增加，同时钢带进入侧底部中心区域时，底渣也开始被卷起，最终形成了锤子形状，且数学模拟与物理模型实验现象基本一致。结论 对于表面渣来说，较大的钢带拉速可以有效促使锌渣远离钢带表面。对于悬浮渣来说，钢带拉速的增大有利于截面上悬浮渣的上浮。对于底渣来说，随着钢带拉速的增加，带动了锌锅内的钢液运动，使得锌锅内锌液的流动比较活跃。但拉速增大到一定程度后，底渣卷起过多，进入锌液，不利于钢带表面锌渣的去除。 |
| 英文摘要: |
| During the actual production of aluminum zinc plate, the zinc slag generated from the reaction between the steel strip and the aluminum zinc liquid will be adhered to the surface of the steel strip and seriously affect the surface quality of the steel strip. The work aims to study the method to move the dross away from the surface of the strip and improve the quality of the strip by hydraulic models and mathematical models. A transparent water model of a zinc pot was designed to visually study the movement state of the zinc slag inside the experimental model and analyze the movement state of the surface dregs, suspended slag and bottom slag under different process conditions. A mathematical model was established to calculate the temperature distribution and flow field distribution to verify the rationality of the hydraulic model. With the increase of the strip speed, the vortex core moved to both sides gradually. The larger strip speed could effectively promote the zinc slag away from the surface of the strip and the bottom slag that was rolled up increased. As the amount of suspended slag increased, the bottom slag of steel strip entering the center area at side bottom also started to roll up to form a hammer shape. The mathematical simulation and the physical model experiment were basically consistent. For surface slag, a larger strip speed can effectively promote the dross away from the strip surface. For the suspended slag, the increase of the strip speed is conducive to the floating of the suspended slag on the cross section. For the bottom dross, with the increase of the strip speed, the movement of the molten steel in the zinc pot is driven, so that the zinc liquid in the zinc pot flows more actively. After the pulling speed increases to a certain extent, the bottom slags roll up too much and enter into the zinc liquid, which is not favorable for the removal of zinc dross on the surface of the steel belt. |
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