CaAl包芯線的熔化特征及喂線參數的優化

鄭萬; 李天佑; 王春鋒; 熊珊; 李光強; 劉炳宇

doi:10.13374/j.issn2095-9389.2018.s1.024

CaAl包芯線的熔化特征及喂線參數的優化

doi: 10.13374/j.issn2095-9389.2018.s1.024

鄭萬^1,2, ,,
李天佑¹,
王春鋒³,
熊珊¹,
李光強^1,2,
劉炳宇³

1. 武漢科技大學鋼鐵冶金及資源利用省部共建教育部重點實驗室;
2. 武漢科技大學鋼鐵冶金新工藝湖北省重點實驗室;
3. 寶武集團武漢鋼鐵有限公司

基金項目:

武漢科技大學科技創新團隊培育資助項目 (2018TDX08)

詳細信息

通訊作者:
鄭萬, E-mail:zhengwan@wust.edu.cn

中圖分類號: TF769
計量
- 文章訪問數: 21
- HTML全文瀏覽量: 8
- PDF下載量: 2
- 被引次數: 0
出版歷程
- 收稿日期: 2018-02-27
- 網絡出版日期: 2023-07-18

Melting behavior of CaAl cored wire in liquid steel and optimization of wire feeding parameters

1. Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education,Wuhan University of Science and Technology;
2. Hubei Provincial Key Laboratory for New Process of Ironmaking and Steelmaking,Wuhan University of Science and Technology;
3. Wuhan Iron and Steel Co.Ltd.,Baowu Group

摘要

摘要: 模擬研究了1873 K鋼液溫度下鋼皮厚度0.74 mm的Ca Al包芯線的熔化、氣化行為及150 t鋼包的理想喂線參數, 并試驗研究了不同鋼種及鈣合金包芯線對鈣收得率的影響.結果表明:包芯線喂入鋼液后, 包芯線的Ca Al合金先于包敷的鋼皮熔化, 自喂入鋼液0.92 s后, 包芯線頂端鋼皮熔化, 液態Ca Al合金進入鋼液后擴散溶解, 當鈣液滴上浮到鋼液面以下1.22 m深度時, 達到了氣化的飽和蒸汽壓, 才會氣化.在150 t鋼包條件下, 為了減少鈣的氣化燒損, 采用3.22⁴.83 m·s^-1的喂線速度, 實現包芯線在鋼液深度2.96 m處熔化的目標.為了提高鈣的收得率, 應采用純鈣包芯線處理碳、硅、錳等元素含量較高的鋼種, 選擇Ca Al包芯線處理低硅低錳的低碳鋼種.
- CaAl包芯線 /
- 鈣處理 /
- 熔化特性 /
- 喂線參數
Abstract: Melting and gasification behavior of Ca Al cored wire with 0.74-mm steel sheet and better feeding process in 1873 K molten steel in 150 t ladle was simulated, and the influence of different Ca cored wire and composition of liquid steel on Ca recovery were analyzed.The results show that calcium alloy of Ca Al cored wire has smelted before its covering steel sheet melts when cored wire is fed into molten steel, melting time of Ca Al cored wire is 0.92 s, then liquid Ca alloy diffuses into liquid steel.Liquid Ca alloy floats upward to 1.22 m below the liquid steel surface and gasifies when alloy has get enough steam pressure of gasification.The feeding speed of 3.22-4.83 m·s^-1for Ca Al cored wire is appropriate to get ideal feeding depth of 2.96 m in ladle with liquid steel.When the elements contents of carbon, silicon and manganese in liquid steel are high, pure Ca cored wire should be used to get bigger Ca recovery, on the contrary, Ca Al cored wire is a better option for low carbon liquid steel with low elements contents of silicon and manganese.
- CaAl cored wire /
- calcium treatment /
- melting characteristics /
- wire-feeding parameters

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參考文獻(12)

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