采油注汽锅炉爆管事故原因分析

通过对3个炉管爆裂断口金相及金属材料分析研究，为诊断和确定锅炉爆管事故发生的原因提供了依据，也为提出预防采油锅炉爆管事故的措施奠定了基础。通过分析比较3个爆破炉管的成分、宏观形貌及显微组织，注汽锅炉炉管产生爆管的主要原因是炉管壁温超温所致。

Study for Accident of Steam Boiler Tube Burst

This paper analysis the metallographic and metallic materials of three boilers burst tube in accident, which provide a basis for diagnosis and determine the common cause of the boiler tube burst accidents, and also set a foundation for the prevention measures of the steam boiler tube burst accident. By a- nalysis and comparision of the components, macroscopic and microscopic morphology of three blast tubes, the major cause of the boiler tube burst is too high wall temperature of boiler tube. Because the circulated water in steam boiler have more carbonate content, the carbonate was crystallized in the wall of tube at the point of the overheated section, so the thermal resistance increases and the boiler tube wall temperature growths and metal performance failures, finally the accident of steam boiler tube burst happens.