武汉工程职业技术学院学报2025，Vol.37Issue(1)：13-16,4.
高炉布料溜槽轴断裂失效分析
Fracture Analysis of Distribution Chute Shaft in Blast Furnace
闻臻 1刘冬 1韩荣东1
作者信息
- 1. 宝钢股份中央研究院(武钢有限技术中心)湖北 武汉:430080
- 折叠
摘要
Abstract
During the operation of the blast furnace material chute,its eccentric shaft broke.The rea-sons for the failure of the eccentric shaft of the chute were analyzed through methods such as composition analysis,mechanical property testing,macroscopic and microscopic metallographic observation,and scan-ning electron microscopy analysis.The results indicate that the fracture mode of the eccentric shaft is rota-tional fatigue fracture,and the fracture is located at the stress concentration site of the R-angle of the shaft.Abnormal furnace conditions during operation result in reverse airflow impacting the eccentric shaft and causing shear deformation.The high temperature environment on the furnace top leads to a weakening of the mechanical properties of the eccentric shaft material.When the resistance of the material is lower than the impact force formed by the reverse airflow at a certain critical temperature,the eccentric shaft un-dergoes shear fracture.关键词
偏心轴/断裂/剪切形变Key words
eccentric shaft/fracture/shear deformation/micro-structure分类
金属材料引用本文复制引用
闻臻,刘冬,韩荣东..高炉布料溜槽轴断裂失效分析[J].武汉工程职业技术学院学报,2025,37(1):13-16,4.
