RH真空精煉后IF鋼鎮靜工藝的潔凈度研究

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基金項目:

北京高校青年英才計劃資助項目（YETP0411）；中央高校基本科研業務費專項資金資助項目（FRF--TP--12--143A）

Cleanliness study of IF steel by holding in ladles after RH vacuum process

1. Engineering Research Institute, University of Science and Technology Beijing, Beijing 100083, China;
2. Shougang Technology Research Center, Shougang Corporation, Beijing 100043, China;
3. Hebei Shougang Qian'an Iron & Steel Co. Ltd., Qian' an 064404, China;
4) Beijing Shougang Automation Information Technology Co. Ltd., Beijing 100041, China

摘要: 為了優化RH處理工藝，提高RH精煉后的IF鋼水潔凈度，通過分析T[O]含量和夾雜物含量的變化研究了鋼水鎮靜（靜置）時間對IF鋼潔凈度的影響.研究表明，隨著鎮靜時間的延長，中間包鋼液中T[O]含量和夾雜物數量總體呈先下降后回升的趨勢.在30min到40min的鎮靜時間區間里，中間包內鋼液試樣T[O]含量基本穩定，所分析爐次中只有4.76%爐次T[O]超過30×10^-4%.在該廠現行工藝條件下，鎮靜時間在30 min到40 min的時段內的鋼液潔凈度水平較高.
- IF鋼 /
- 精煉 /
- 潔凈度 /
- 夾雜物
Abstract: The influence of the holding time of molten steel in the ladle after RH vacuum process on the T[O] content and nonmetal inclusion content of interstitial-free(IF) steel in the tundish was studied to optimize the RH process parameters and improve the cleanliness of IF steel after RH treatment. Experimental results show that as the holding time increases,the T[O]and non-metal inclusion contents decrease at first and then increase. The T[O]content is basically steady below 30×10^-4% in the holding time range of 30 min to 40 min except for 4.76% of heats. It is suggested that under current process conditions,the steel mill should control the holding time between 30 min and 40 min.
- IF steel /
- refining /
- cleanliness /
- inclusions