汽轮机17CrMo1V材料焊接低压转子脆性断裂的研究  

STUDY ON BRITTLE FRACTURE OF LOW PRESSURE ROTORS WITH 17CrMo1V MATERIAL IN STEAM TURBINES

作　　者：史进渊[1] 袁伯英 程道来[1] 李颖 孙庆[1] 

机构地区：[1]上海发电设备成套设计研究所,上海200240 [2]华东电力试验研究所,上海200437

出　　处：《中国电机工程学报》2000年第6期61-64,共4页Proceedings of the CSEE

摘　　要：介绍了采用 17CrMo1V材料的汽轮机焊接低压转子脆断评定方法。给出了 17CrMo1V转子材料断裂力学性能数据的取值和低压转子临界裂纹尺寸、允许初始裂纹尺寸、疲劳裂纹扩展寿命的确定方法 ,以及低压转子裂纹扩展寿命评估和预测方法。结合某大型汽轮机的运行实际 ,给出了17CrMo1V材料焊接低压转子防脆断评定的实例。This paper describes a valuation method of brittle fracture for low-pressure weld rotors of steam turbines with 17CrMo1V material. The fracture mechanics data of 17CrMo1V material of LP turbine rotors and determination methods of the critical crack size, the allow crack size and the fatigue crack growth life as well as evaluation and prediction methods for crack life of LP turbine rotors are given together with practical example of brittle fracture evaluation for a LP rotor in large capacity steam turbines.

关 键 词：汽轮机 低压转子 断裂 寿命评定 17CrMo1V材料 

分 类 号：TK263.61[动力工程及工程热物理—动力机械及工程]