电厂压力控制阀螺栓断裂失效分析

2020 5th International Conference on Mechanical, Control and Computer Engineering (ICMCCE) Pub Date : 2020-12-01 DOI:10.1109/icmcce51767.2020.00174

J. Si, Hua-Bin Lv, Fa-cai Ren, Bin Ren

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引用次数: 0

摘要

某电厂中压流控制阀螺栓断裂。通过对断裂螺栓的宏观检验、化学成分分析、力学分析和金相分析表明，在长期高温运行过程中，螺栓的显微组织和晶粒发生了变质，导致材料力学性能下降，最终发生脆性断裂。

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Failure analysis on the bolt fracture of pressure control valve in power plant

A bolt of an intermediate pressure stream control valve in a power plant was broken. Through macro inspection, chemical composition analysis, mechanical analysis and metallographic analysis of the broken bolt, it is shown that the microstructure and grains of the bolt have been deteriorated during long-term high temperature operation, which results in the degradation of the mechanical properties of the material, and finally brittle fracture occurred.

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2020 5th International Conference on Mechanical, Control and Computer Engineering (ICMCCE)

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