SRT-IV-HS型裂解炉管损伤分析OA
Damage Analyses of Reformer Tubes in SRT-IV-HS Furnace
通过现场测试和实验室试验,研究了SRT-IV-HS炉管的损伤失效形式。结果表明:高温渗碳、热冲击开裂和蠕变是造成炉管失效的主要原因。当炉管长期在高温下工作时,介质中的碳会渗入到显微组织中,这不仅使材料脆化,而且使渗碳表面产生残余应力,导致炉管开裂。热冲击是由于炉管在某些部位温度变化大,炉管和结焦物的热膨胀系数不同,而产生较大的温差应力,使炉管产生裂纹。高温蠕变损伤是由于过热引起的,过热使金相组织内部产生蠕变空洞,在热应力下空洞扩展连接而形成蠕变裂…查看全部>>
By means of spot inspections and experiments in the laboratory,the damage types of tubes HP40Nb in SRT-IV-HS furnace has been researched. The resul ts show t hat carburizing, hot attack and creep at high temperature are main factors to ma ke the tubes usable. The carbon in the media w ill diffuse in microstructure, which not only embrittles the tubes, but also pro duces the residual stresses on their surface. For these reasons, the tubes crack . Because of l…查看全部>>
李若平;方鲁晋
抚顺乙烯化工有限公司,中国石化集团第十建设公 司,
石油、天然气工程
炉管渗碳蠕变残余应力裂纹损伤分析
《抚顺石油学院学报》 2001 (1)
35-39,5
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