振动激发形核技术在45 t Q345B钢锭浇铸过程的应用

特殊钢 ›› 2014, Vol. 35 ›› Issue (4): 20-23.

振动激发形核技术在45 t Q345B钢锭浇铸过程的应用

王超^1,2, 张慧^1,2, 王明林^1,2, 马忠伟^1,2, 赵沛¹

钢铁研究总院1连铸技术国家工程研究中心;
2先进钢铁流程及材料国家重点实验室，北京100081

收稿日期:2014-02-06 出版日期:2014-08-01 发布日期:2022-09-03
作者简介:王超(1984-),男，博士研究生(钢铁研究总院),2007年河北理工大学(本科)毕业,连铸工艺技术、铸坯及铸锭凝固组织细化。
基金资助:
国家973项目(夹杂物稳定性及铸坯均匀度控制的研究)资助(2010CB630806)

Application of Vibrating-Exciting Nucleation Technology in 45 t Q345B Steel Ingot Casting

Wang Chao^1,2, Zhang Hui^1,2, Wang Minglin^1,2, Ma Zhongwei^1,2 , Zhao Pei¹

1 National Engineering Research Center of Continuous Casting Technology,
2 State Key Laboratory of Advanced Iron and Steel Processes and Materials, Central Iron and Steel Research Institute, Beijing 100081

Received:2014-02-06 Published:2014-08-01 Online:2022-09-03

摘要/Abstract

摘要： 振动激发形核装置由激发形核棒、升降、测温、振动、冷却、减震等系统组成。在45 t Q345B钢扁锭浇铸过程,高度200mm振动激发形核棒置于铸锭中心处,插入钢液深度50~80mm。试验结果表明,(1)在模铸过程使用振动激发形核装置安全可靠;(2)冷却气体达到40 m³/h棒体表面有结壳现象,而当冷却气体液量在20 m³/h,棒体表面很光滑,合适的冷却气体流量为20~40 m³/h,激发形核棒表面和钢液间的温差为55~80 ℃;(3)通过探伤检测,振动处理板Ⅱ级合格,而未经振动处理的常规板有连续性缺陷,判定为不合格。

Abstract: The vibrating-exciting nucleation device consists of exciting nucleation rod, up-down, vibrating, rod cooling, damping and temperature measuring system. During 45 t Q345B steel slab ingot casting, the vibrating-exciting nucleation bar with height 200 mm is located at center of casting ingot mould submerged in liquid 50 ~ 80 mm. Casting test results show that (1) the vibrating-exciting nucleation device is safe and reliable as using it during ingot casting； (2) with cooling gas rate up to 40 m³/h the incrustation phenomenon occurs on surface of vibrating rod body, while with 20 m³/h the rod surface is very smooth, so the appropriate gas flow rate is 20 〜40 m³/h and the temperature difference between surface of exciting nucleation rod and liquid is 55 〜80 ℃； (3) by nondestructive examination, the plate rolled by ingot with using vibrating-exciting nucleation processing is qualified with H rating while the contrast plate rolled by general ingot without using vibrating-exciting nucleation processing is unqualified due to existing continuous defects.

王超, 张慧, 王明林, 马忠伟, 赵沛. 振动激发形核技术在45 t Q345B钢锭浇铸过程的应用[J]. 特殊钢, 2014, 35(4): 20-23.

Wang Chao', Zhang Hui, Wang Minglin'', Ma Zhongwei, Zhao Pei. Application of Vibrating-Exciting Nucleation Technology in 45 t Q345B Steel Ingot Casting[J]. Special Steel, 2014, 35(4): 20-23.