中国核压力容器用钢及其制造技术进展-中国材料进展

文章信息/Info

Title:: Progress on Nuclear Pressure Vessel Steels and Its Manufacturing Technology in China

作者:: 何西扣1; 刘正东1; 赵德利2; 张文辉2; （1. 中国钢研科技集团钢铁研究总院，北京 100081）（2. 中国第一重型机械股份公司，黑龙江齐齐哈尔 161042）

Author(s):: HE Xikou1; LIU Zhengdong1; ZHAO Deli2; ZHANG Wenhui2; （1. Central Iron & Steel Research Institute, China Iron & Steel Research Institute Group, Beijing 100081, China）（2. China First Heavy Industries, Qiqihaer 161042, China)

Keywords:: nuclear pressure vessel; heavy forgings; lowtemperature toughness; homogeneity; manufacturing technology

摘要:: 基于我国压水堆核电站核压力容器用钢及其制造技术的发展，阐述了“大型一体化设计”和“高安全长寿期运行”对核压力容器用钢工程应用性能极限和现有设备制造能力极限的挑战；重点介绍了A5083钢大锻件成分优化匹配控制技术、超大钢锭高纯净高均匀冶金控制技术、复杂锻件近净成形锻造技术、提升低温韧性和均质性的组合热处理技术的研究进展和突破。上述技术是核电站高安全和长寿期运行的关键，也是我国核电工程制造技术跃居世界先进水平的重要支撑。此外，还简介了我国新一代核压力容器用A508-4N钢大锻件的研制进展及突破。

Abstract:: Based on the development of nuclear pressure vessel steel and its manufacturing technology for pressurized water reactor in China, the challenges of “largescale integrated design” and “high-safety long-term operation” to the property limitation in engineering application of nuclear pressure vessel steel and manufacturing capacity limitation of its equipment were reviewed. The research progress and breakthrough on the manufacturing technologies for heavy forgings of A508-3 steel were introduced on emphasis, containing composition optimizing and matching technique, high purity and uniform metallurgical technique of extra-large steel ingot, near-net-shape forming technique of complicated forgings, as well as combined heat treatment technique for improving the low-temperature toughness and homogeneity of heavy forgings. The technologies as mentioned are the key factors to the high-safety and long-life operation of nuclear power plants. In addition, the development progress and breakthrough on new-generation heavy forgings of A508-4N steel for nuclear pressure vessel were also introduced.