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一、前言电站转子锻件生产是我国机械工业中一个薄弱环节,因满足不了需要,需用大量外汇进口。目前各重机厂积压有发电能力约为××万瓩的带缺陷的转子锻件。如能通过断裂力学方法对带缺陷转子的承载能力和使用寿命进行分析,重新科学地评定这些带缺陷转子的质量和正确判废,是有一定的经济意义和政治意义的。另外,目前还有若干带伤转子正在一些电厂中监督使用,为确保电厂的安全,也迫切需要对这部分转子进行系统的断裂力学分析。同时也为
I. Introduction Power station rotor forgings production is a weak link in China’s machinery industry, due to the need to meet the need to use a large number of foreign exchange imports. At present, the heavy machinery plant backlog of generating capacity of about × × Wan 瓩 defective rotor forgings. It is economically and politically important to analyze the bearing capacity and service life of a defective rotor by means of fracture mechanics and to re-evaluate the quality of these defective rotor and correctly sentenced it to scrap. In addition, there are a number of injured rotors being supervised in some power plants. In order to ensure the safety of power plants, there is an urgent need for a systematic fracture mechanics analysis of this part of rotors. Also for