简要介绍了汽轮机转子应力腐蚀产生飞射物的过程和影响因素,采用Clark模型对裂纹扩展速率进行计算,计算了裂纹从产生到扩展至极限尺寸所需的时间,在此基础上采用蒙特卡洛方法计算了飞射物产生的概率,最后通过企业提供的数据对某转子产生飞射物的概率进行计算,并对计算结果进行简要分析,证明了该转子的运行可靠性,经比较计算结果与厂商提供原始数据相吻合,验证了方法正确性。 This paper briefly introduces the process and influencing factors of steam turbine rotor stress corrosion corrosion, calculates the crack growth rate by Clark model, and calculates the time required for the crack to propagate to the limit size. Based on this, Monte Carlo The probability of flying object was calculated. Finally, the probability of flying object produced by a rotor was calculated by the data provided by the enterprise. The calculation results were briefly analyzed to prove the reliability of the rotor. After comparing the results with The original data provided by the manufacturer is consistent, verifying the correctness of the method.