Oxygen pitting failure of a bagasse boiler tube

被引：20

作者：

Heyes, AM ^{[1
]}

机构：

[1] CSIR, MATTEK, Adv Engn & Testing Serv, ZA-2006 Auckland Pk, South Africa

来源：

ENGINEERING FAILURE ANALYSIS | 2001年 / 8卷 / 02期

关键词：

boiler failure; corrosion; fatigue failure; pitting corrosion; vibration;

D O I：

10.1016/S1350-6307(99)00041-2

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Examination of a failed roof tube from a bagasse boiler showed transverse through-cracks and extensive pitting. The pitting was typically an oxygen induced pitting and numerous fatigue cracks had started within these pits. It is highly probable that the pitting occurred during an idle period (a drought) due to oxygen ingress and failure to maintain a sufficient excess of the oxygen scavenger, sodium sulfite. The transverse orientation of the cracks and other factors suggest that the fatigue cracking is related to tube vibrations. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：123 / 131

页数：9