Cause analysis of secondary blade cracking at the end of lowpressure rotor in a power plant

Abstract

Abstract:

During a class A overhaul of No.2 unit in a power plant, there are 27cracks fromlow pressure lefthanded fifth grade blade to righthanded fifth grade(that is the last second stage)blade.Through the comprehensive appearance inspection and laboratory test, the reason for the cracks on the low pressure fifth blade of No.2 unit are found.It can provide reference for the analysis and processing of related problems.

Key words:

lowpressure rotor, the last second stage blade, cracking, crack, metallographic detection

HOU Jiaxu，ZHOU Shukang，LI Yanjun.

Cause analysis of secondary blade cracking at the end of lowpressure rotor in a power plant

[J]. Huadian Technology, 2019, 41(2): 28-31.

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Cause analysis of secondary blade cracking at the end of lowpressure rotor in a power plant

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