3.5%NiCrMoV钢低压整锻转子性能试验总结

• 作 者: 潘齐驯
• 出 处: 动力工程
• 发表日期: 1985年04期
• 关键词: 整锻转子 NiCrMoV 低压转子 转子材料 发电机转子 性能试验 脆性转变温度 贝氏体组织 热处理工艺 直径比

前言 随着汽轮机功率的增大,低压转子的直径和重量也愈大,这就要求转子材料有高的强度、塑性,韧性和高的淬透性,以保证整个截面得到所需的组织及均匀的机械性能。并且要求低的FATT值,以及高的纯洁度。 目前国外汽轮机低压转子最常用的材料为3.5％Ni-Cr-Mo-V钢。为了满足国内大机组锻件的用材,推荐选用世界各国通用的25Cr_2Ni_4Mo V 钢用于汽轮机低压转子与发电机转子。

Preface With the steam turbine power increases, the diameter and weight of the low-pressure rotor is also greater, which requires the rotor material with high strength, plasticity, toughness and high hardenability to ensure that the entire cross-section to obtain the desired organization and uniform Mechanical properties. And require a low FATT value, as well as high purity. At present, the most commonly used material for low-pressure steam turbines abroad is 3.5% Ni-Cr-Mo-V steel. In order to meet the timber forgings of large domestic units, it is recommended to use 25Cr_2Ni_4Mo V steel common to all countries in the world for low-pressure steam turbine rotor and generator rotor.