ISSN:1003-8620

CN:42-1243/TF

主管:中信泰富特钢集团股份有限公司

主办:大冶特殊钢有限公司

特殊钢 ›› 2015, Vol. 36 ›› Issue (6): 26-29.

• 工艺技术 • 上一篇    下一篇

立弯式奥氏体不锈钢220 mmx220 mm铸坯动态二冷控制和应用

杜辰伟1, 李聿军1, 张家泉1, 田观清2, 吕龙厅2, 郑新国3, 李靖宇3   

  1. 1北京科技大学冶金与生态工程学院,北京100083 ;
    2上海新中冶金设备厂,上海201803;
    3山西太钢不锈钢股份有限公司炼钢一厂,太原030003
  • 收稿日期:2015-06-08 出版日期:2015-12-01 发布日期:2022-08-12
  • 作者简介:杜辰伟(1987-),男,博士研究生(北京科技大学),太原科技大学(本科)毕业,连铸坯质量、过程控制工艺研究。
  • 基金资助:
    钢铁冶金新技术国家重点实验室资助项目

Control of Dynamic Secondary Cooling Process for Vertical-Bending 220 mm x 220 mm Casting Bloom of Austenite Stainless Steel

Du Chenwei1, Li Yujun1, Zhang Jiaquan1, Tian Guanqing2, Lii Longting2, Zheng Xinguo3 ,Li Jingyu3   

  1. 1 School of Metallurgical and Ecological Engineering, University of Science and Technology, Beijing 100083 ;
    2 Shanghai Xinzhong Metallurgical Equipment Factory, Shanghai 201803 ;
    3 No.1 Steelmaking Works, Shanxi Taigang Stainless Steel Co Ltd, Taiyuan 030003
  • Received:2015-06-08 Published:2015-12-01 Online:2022-08-12

摘要: 根据奥氏体不锈钢的热物理参数和二冷区各区出口目标温度,建立了不锈钢220mm×220 mm铸坯动态二冷综合控制模型和末端拉速电磁搅拌-拉速优化模型。304奥氏体不锈钢连铸生产应用结果表明,在该钢正常工作拉速0.8~1.1 m/min,根据目标温度(足辊1080℃,一区1 070℃,二区1060℃,三区1045℃,进拉矫机980℃)制定相应比水量(0.30~0.33 L/kg),模型实时计算表面温度与目标温度对比,进行在线控制,铸坯温度均匀、稳定,冶金质量良好。

关键词: 奥氏体不锈钢, 220 mm X220 mm坯, 立弯式连铸, 动态二冷控制, 模型, 应用

Abstract: According to thermal physical parameters of austenite stainless steel and aim temperature at outlet of each section of secondary cooling area, the comprehensive control model for dynamic secondary cooling process of 220 mm X 220 mm casting bloom of stainless steel and the end electromagnetic stirring-casing speed optimized model have been established. The application results of casting production of 304 austenite stainless steel show that at normal casting speed 0.8-1.1 m/min for the steel, according to aim temperature (foot rolls 1080 ℃,Ⅰ section 1070 ℃, Ⅱ section 1060 °C,Ⅲ section 1045 °C and entering straightening machine 980 ℃ ) to defining corresponding water rate (0.30-0.33 L/kg), the secondary cooling process is controlled based on comparison between calculated surface temperature by model in time and aim temperature value, as a results the temperature of casting bloom is even and stable with nice metallurgical quality.