Application of a chamfer slab technology to reduce internal cracks of continuous casting bloom during soft reduction process

被引:10
|
作者
Zong, Nanfu [1 ]
Zhang, Hui [1 ]
Wang, Minglin [1 ]
Lu, Zhifang [2 ]
机构
[1] Natl Engn & Res Ctr Continuous Casting Technol, Cent Iron & Steel Res Inst, Beijing 100081, Peoples R China
[2] Xingtai Iron & Steel Corp Ltd, Xingtai 054027, Hebei, Peoples R China
关键词
internal crack; chamfer geometry; soft reduction technology; brittle temperature range; STEEL BILLETS; FATIGUE; MODEL; PROPAGATION; BEHAVIOR; SURFACE;
D O I
10.1051/metal/2018112
中图分类号
TF [冶金工业];
学科分类号
0806 ;
摘要
The stress concentrations over the brittle temperature range (BTR) in the bloom continuous casting are the main reason of internal cracks. In order to analyze the stress distribution in the BTR of the blooms during soft reduction stage, a three-dimensional thermo-mechanical finite-element model with different corner structures (i.e. chamfer angle and chamfer length) was established. The relationship between corner structures, maximum tensile stress, as well as shear stress is analyzed, and the influence of corner structure of bloom on the internal cracks is studied. The results show that the tensile stress and the shear stress decreased gradually by properly adjusting the chamfer angle and the chamfer length of the bloom. Compared with the use of the right-angle bloom casting, the application of chamfer bloom casting is able to reduce the stress concentration over the BTR, therefore reduces the internal cracks. In addition, as a side benefit, the chamfer bloom casting can save energy required in deforming the bloom during the soft reduction process.
引用
收藏
页数:10
相关论文
共 50 条
  • [1] Formation of internal cracks during soft reduction in rectangular bloom continuous casting
    Li, Xiao-bin
    Ding, Hua
    Tang, Zheng-you
    He, Ji-cheng
    INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS, 2012, 19 (01) : 21 - 29
  • [3] Formation of internal cracks during soft reduction in rectangular bloom continuous casting
    Xiao-bin Li
    Hua Ding
    Zheng-you Tang
    Ji-cheng He
    International Journal of Minerals, Metallurgy, and Materials, 2012, 19 : 21 - 29
  • [4] Application of a Corner Chamfer to Steel Billets to Reduce Risk of Internal Cracking during Casting with Soft Reduction
    Hu, Peng
    Zhang, Hui
    Zhang, Xingzhong
    Zhu, Miaoyong
    ISIJ INTERNATIONAL, 2014, 54 (10) : 2283 - 2287
  • [5] Application of Dynamic Soft Reduction Technology in Continuous Casting of Slab
    Luo Chuan-qing
    Ni Hong-wei
    Liu Guang-ming
    Zhang Hua
    Chen Guo-wei
    JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL, 2008, 15 : 141 - 145
  • [6] Analysis and Application of Soft Reduction Amount for Bloom Continuous Casting Process
    Ji, Cheng
    Luo, Sen
    Zhu, Miaoyong
    ISIJ INTERNATIONAL, 2014, 54 (03) : 504 - 510
  • [7] Alleviation of internal cracks in continuous casting bloom of steel 100Cr6 induced by soft reduction process
    Zong, N.
    Ma, S.
    Sun, W.
    Jing, T.
    Lu, Z.
    METALLURGIA ITALIANA, 2020, (11-12): : 14 - 22
  • [8] Alleviation of internal cracks in continuous casting bloom of steel 100Cr6 induced by soft reduction process
    Zong, Nanfu
    Ma, Sida
    Sun, Weizhao
    Jing, Tao
    Lu, Zhifang
    Metallurgia Italiana, 2020, 112 (11): : 14 - 22
  • [9] A Prediction Model for Internal Cracks during Slab Continuous Casting
    Kong, Yiwen
    Chen, Dengfu
    Liu, Qiang
    Long, Mujun
    METALS, 2019, 9 (05)
  • [10] Industrial Application of the Packaged Soft-Reduction Technology for Slab Continuous Casting
    Feng, Ke
    Han, Zhiwei
    Cao, Jianfeng
    Kong, Yiwen
    Wang, Shuigen
    MATERIALS PROCESSING TECHNOLOGY II, PTS 1-4, 2012, 538-541 : 1222 - 1227