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頁籤選單縮合
題名 | 電鍍逆流裝置於電鍍鋅線的演進與實務=Improvement of Counterflow Devices on the Electrolytic Galvanizing Line in CSC |
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作者姓名(中文) | 宮泰安; 邱斌棟; 李隆溪; | 書刊名 | 技術與訓練 |
卷期 | 30:2=231 民94.06 |
頁次 | 頁70-79 |
專輯 | 冷軋專集 |
分類號 | 472.16 |
關鍵詞 | 電鍍鋅線; 圓弧式電鍍槽; 逆流噴嘴; 質傳; 擾流; 邊緣燒傷; 表面色澤不均; Electrolytic galvanizing line; CAROSEL; Counterflow nozzle; Mass transfer; Turbulence; Edge burns; Cloudy streaks; |
語文 | 中文(Chinese) |
中文摘要 | 中鋼電鍍鋅線係採用美鋼專利的圓弧式電鍍槽型式(CAROSEL),具有高電流密度進行鋼帶電鍍的特點,但對圓弧式電鍍槽而言,要保持均勻的電鍍質傳,先天上較水平式及重直式電鍍槽困難,需靠陽極與鋼帶間的電鍍液逆流裝置控制均勻的擾流,以防止因質傳不良造成邊緣燒傷及表面色澤不均等品質缺陷。中鋼電鍍鋅線經過多次線上測試,將逆流裝置噴嘴改為沒有管中管且窄的設計,目前使用於最後一個電鍍槽,不但徹底變善逆流噴嘴容易阻塞的問題,亦能供應均勻的電鍍液擾流。本篇報告對於逆流噴嘴改善過程將有詳細介紹。 |
英文摘要 | The U.S. Steel CAROSEL process with a high-current-density type plating cell is applied to the Electrolytic Galvanizing Line (EGL) at China Steel Corporation (CSC). The counterflow devices are designed in the CAROSEL plating cell to control the more effective electrolyte turbulence flow and achieve higher current density. This is more difficult for the radial type of cell than another type of cell such as horizontal or vertical ones. The problem of edge burns and cloudy strakes on the coating surface are probably caused by the non-uniform or less mass transfer from the zinc anode to the strip. The plug of counterflow nozzle (CFN) causes the non-uniform mass transfer. The problem was improved by redesigning the CFN. The new CFN with no pipe-in-pipe and narrow header was installed in the last cell of EGL at CSC. The modification not only solved the plugging of CFN, but also kept the more effective electrolyte turbulence flow. A detail discussion of these CFN modifications is presented in this paper. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。