转炉烟罩失效原因分析及对策
Failure Analysis and Countermeasures of Converter Hood
摘 要
某钢厂转炉烟罩发生开裂失效，导致冷却水泄漏。利用金相显微镜、扫描电镜等设备，从宏观形貌、化学成分、显微组织、腐蚀产物等方面对其失效原因进行了分析，并提出了相应的预防措施。结果表明：热应力、高温氧化和焊接缺陷是导致该烟罩发生开裂失效的重要原因。
失效分析
热应力
converter hood
failure analysis
heat stress
Abstract
Cracking failure of a converter hood in some steel plant resulted in leakage of cooling water. The failure reasons were analyzed through analyses of macroscopic morphology, chemical composition, microstructure, corrosion products and other aspects using metallographic microscope, scanning electron microscope and other equipment. And corresponding preventive measures were proposed. The results show that heat stress, high temperature oxidation and welding defects were the main reasons for cracking failure of the hood.
中图分类号 TG174 DOI 10.11973/fsyfh-201902014
所属栏目 失效分析
基金项目
收稿日期 2017/8/9
修改稿日期
网络出版日期
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引用该论文: LIU Liwei,DONG Xianchun,ZHANG Xiazhou,CAO Jianping,SHENG Hai,GAO Lijun,YANG Jianwei. Failure Analysis and Countermeasures of Converter Hood[J]. Corrosion & Protection, 2019, 40(2): 151
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参考文献
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【2】DRUMMOND W,DEAKIN J. A water-cooled hood system for peirce-smith converters and similar furnace vessels[J]. JOM,1999,51(5):40-41.
【3】沙勇,张彭博. 转炉汽化烟道爆管分析及预防[J]. 中国新技术新产品,2015(3):191-192.
【4】赵志宇. 延长转炉汽化冷却烟道使用寿命的措施[J]. 河北冶金,2014(6):50-51.
【5】陈江涛,丁彰雄,黄文豪. 转炉移动烟罩冷却水管的失效分析[J]. 武汉理工大学学报(交通科学与工程版),2006,30(1):66-69.
【6】ARIZA E A,TSCHIPTSCHIN A P,AZEVEDO C R F. Failure analysis of a martensitic stainless steel (CA-15M) roll manufactured by centrifugal casting. Part Ⅱ:Thermal stress analysis by FEA[J]. Engineering Failure Analysis,2015,48(2):78-93.
【7】张清廉,李铭,王起江. 20G无缝钢管穿孔泄漏失效分析[J]. 理化检验-物理分册,2016,52(4):265-269.
【8】王志武,邓芳,王玉山,等. 20g钢高温高压水蒸汽氧化行为研究[J]. 腐蚀科学与防护技术,2008,20(3):170-172.
【9】王春芬,李雪峰. 气化炉泄漏原因分析[J]. 材料开发与应用,2007,22(6):54-56.
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