Advertisement

Effect of Microstructure on Resistance to Buildups Formation of Carbon Sleeves in Continuous Annealing Furnace for Silicon Steel Production

  • Mingsheng HeEmail author
  • Xiongkui Wang
  • Wangzhi Zhou
  • Xuecheng Gong
  • Jing Zhang
  • Jian Xu
Conference paper
Part of the The Minerals, Metals & Materials Series book series (MMMS)

Abstract

Graphite, which has a unique stack structure that enables a small friction coefficient, is the best hearth rolls to support and convey silicon steel strip in continuous annealing furnace. However, the buildups formation in/on the surface of carbon sleeve has always been a worldwide difficulty in silicon steel industry. The operating conditions of carbon sleeve are introduced. Based on the analysis of the microstructure and topography of the buildups, combined with the microstructure and topography of carbon sleeve, the causes of forming buildups are discussed. The results show that buildups experience the process from nucleating to growing-up, and the sizes and shapes of buildups have relations to the pore sizes and shapes in the surface of carbon sleeve. Meanwhile, some countermeasures to reduce the buildups formation in the surface of carbon sleeve are proposed.

Keywords

Carbon sleeve Microstructure Buildup formation Silicon steel Continuous annealing 

References

  1. 1.
    He MS, Peng SJ, Xue GF et al (2015) Cause analysis on buildup formation of carbon sleeve in continuous annealing furnace for non-oriented silicon steel produced by CSP process. In: Chracterization of minerals, metals, and materials 2015, pp 587–593CrossRefGoogle Scholar
  2. 2.
    He MS, Peng SJ, Xue GF et al (2012) Cause analysis about breakage of carbon sleeve in continuous annealing furnace for silicon steel. Iron Steel Res 40:24–27Google Scholar
  3. 3.
    He MS, Xie GH, Gong XC et al (2018) Buildup formation mechanism of carbon sleeve in continuous annealing furnace for silicon steel. In: Characterization of minerals, metals, and materials 2018, pp 375–385Google Scholar
  4. 4.
    He MS, Luo ZH, Xue GF et al (2015) Carbon sleeve for silicon steel in continuous annealing furnace. YB/T 4465-2015. Metallurgical Industry Press, BeijingGoogle Scholar

Copyright information

© The Minerals, Metals & Materials Society 2019

Authors and Affiliations

  • Mingsheng He
    • 1
    • 2
    Email author
  • Xiongkui Wang
    • 2
  • Wangzhi Zhou
    • 1
  • Xuecheng Gong
    • 2
  • Jing Zhang
    • 2
  • Jian Xu
    • 2
  1. 1.R&D Center of Wuhan Iron & Steel Co., Ltd.WuhanChina
  2. 2.Silicon Steel Division of Wuhan Iron & Steel Co., Ltd.WuhanChina

Personalised recommendations