Damage investigation and optimization measures of W-shaped radiant tube in continuous annealing furnace
LIU Shun-ming1,LI Yang-long2,HOU Da-wei1,WANG Dao-jin1,ZHENG Xiao-fei1
(1. Cold Rolling Department, Shougang Jingtang United Iron and Steel Co. , Ltd. , Tangshan 064000, Hebei, China 2. Research Institute of Technology, Shougang Group Corporation Beijing 100043, China)
Abstract:The damage of radiant tube will directly affect the capacity of the continuous annealing furnace and the protection atmosphere in the furnace. The large amount of cracking of W-shaped radiant tube in cold rolling continuous annealing line is analyzed. The influence of the structure of radiant tube and its accessories on the stress field of radiant tube is studied by numerical simulation. It is found that the improper installation of the radiant tube is the direct cause of the cracking and damage of the radiant tube,and the optimization scheme for improving the installation structure of radiant tube is further proposed. After improvement,the maximum equivalent stress of radiant tube at 850 ℃ is about 104 MPa,and there is no large local stress concentration point. The cracking probability of radiant tube is greatly reduced base on this improvement,and the service life of radiant tube is prolonged from 2 to 5 years.
收稿日期: 2017-12-14
出版日期: 2018-06-20
引用本文:
刘顺明,李洋龙,侯大伟,王道金,郑晓飞. 连续退火炉W型辐射管破损调研及优化措施[J]. , 2018, 53(6): 103-107.
LIU Shun-ming,LI Yang-long,HOU Da-wei,WANG Dao-jin,ZHENG Xiao-fei. Damage investigation and optimization measures of W-shaped radiant tube in continuous annealing furnace. Iron and Steel, 2018, 53(6): 103-107.
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