炼油厂换热器应力腐蚀失效机理及防护

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从某炼油厂的换热器管板裂纹形貌判断该换热器为应力腐蚀失效。对换热器管板的应力状态及应力腐蚀失效机理进行分析，并给出防护措施。

Judgment that the heat exchanger of a certain oil refinery failed due to stress corrosion has been made according to the crack pattern of the tube sheet of the heat exchanger, and the stress condition of the heat exchanger tube sheet and the failure mechanism of stress corrosion have been analyzed. Protective measures have been provided based on the analysis.

换热器，应力腐蚀，失效，防护，heat exchanger，stress eorrosion，failure，protective。

炼油厂换热器应力腐蚀失效机理及防护。