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腐蚀破坏是波纹管膨胀节失效的一个重要原因。通过对催化裂化装置用波纹管膨胀节及城市区域供热用外压波纹管膨胀节的腐蚀破坏情况进行分析 ,探讨其腐蚀机理 ,提出了相应的防护对策。
Corrosion damage is an important reason for failure of bellows expansion joints. By analyzing the corrosion damage of the bellows expansion joint of the catalytic cracking unit and the outer pressure bellows expansion joint of urban district heating, the corrosion mechanism is discussed and corresponding countermeasures are proposed.