| With the development of science and technology,Industrial surface quality galvanized steel sheet,the strength,weldability and elongation punch requirement is gradually improving.Galvanized by some companies in Europe and North America were statistically found common hot galvanized steel surface defects 8 categories,of which five are related to dross relevant,visible,liquid zinc dross is the impact of galvanized sheet the most important factor in surface quality.Dross in galvanizing process.Galvanized steel can easily be adhered to form dross defects seriously affect the appearance quality galvanized sheet.How to deal with the problem of dross,each steel enterprises at home and abroad in isolation and extraction cleared two main solutions.Dross isolation method due to operational requirements,after prolonged effect of variation limitations;extraction removal methods currently a lot of tests,but also a lot of practicality patent application,however,structural optimization and specific operational parameters of study is relatively small,the lack of specific rules and parameters,the difference between these manual adjustments are large,drawn dross effect is different,the quality of the strip also has different effects.The traditional way of data obtained experimentally are in galvanized steel production in obvious limitations,and long life cycle,high cost,the production also adversely affected.Based on the current situation,this paper,the method of CFD software zinc ash pumped dross process simulation,zinc ash pump works into the theoretical analysis,the course of their work to simplify a gas-liquid two-phase flow,be optimized by adjusting the various operating parameters.design,and on the basis of similarity theory design water simulation equipment to Taiwan to do the groundwork for subsequent experiments,subsequent standardization zinc ash pumps provide theoretical guidance and reference parameters on. |
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