理化检验-物理分册2025，Vol.61Issue(8)：88-92,5.DOI:10.11973/lhjy-wl250039
热连轧高铬铁轧辊断裂原因
Reasons for fracture of high chromium iron rolling mill in hot rolling
钟莉莉 1杨静 2王晓峰 2黄磊 1金星3
作者信息
- 1. 海洋装备金属材料及应用国家重点实验室,鞍山 114009||鞍钢集团钢铁研究院理化所,鞍山 114009
- 2. 鞍钢集团钢铁研究院理化所,鞍山 114009
- 3. 海洋装备金属材料及应用国家重点实验室,鞍山 114009
- 折叠
摘要
Abstract
During the production and commissioning process of a certain hot rolling mill,the rolling mill suddenly stopped and the high chromium iron rolling mill broke.The causes of rolling mill fracture were analyzed using macroscopic observation,chemical composition analysis,mechanical property testing,metallographic examination,scanning electron microscopy and energy spectrum analysis,X-ray diffraction analysis.The results show that the fracture mode of the rolling mill was fatigue fracture,and there were obvious network turtle cracks and large block like and flake like peeling in the crack source area on the surface of the rolling mill.The sudden emergency stop and shutdown of the cooling water of the rolling mill caused a huge temperature difference between the surface and the core of the rolling mill,formed a large thermal stress.The cracking and peeling areas on the surface of the rolling mill produced stress concentration,promoted the continuous expansion of cracks and ultimately led to the fracture of the rolling mill.关键词
高铬铁轧辊/疲劳断裂/温差/热应力/裂纹Key words
high chromium iron rolling mill/fatigue fracture/temperature difference/thermal stress/crack分类
通用工业技术引用本文复制引用
钟莉莉,杨静,王晓峰,黄磊,金星..热连轧高铬铁轧辊断裂原因[J].理化检验-物理分册,2025,61(8):88-92,5.
