鉴于某型舰用锅炉过热器破损的主因在于其内部腐蚀，而破损的主要方式是由管头的溃烂开始直至整个管头烂掉为止，导致管子的胀接松动而漏泄。

The main reason which causes the breakdown of marine boiler superheater is its inner corrosion, which is taken to be developed from the parts of tube top to entire top, and this leads to leakage.

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本文对姚孟电厂两台30万千瓦直流锅炉水冷壁管发生横向裂纹漏泄的问题进行了分析。

The author analyses the water wall leakages on two 300mw once-through boilers in Yaomen power plant. The leakage is due to transverse cracks on water wall tubes.

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