Development and engineering manufacture technology of 9%-12% Cr high and medium pressure rotor material
LI Qi1,2,3, CHEN Zheng-zong2, JIANG Xin-liang3, LIU Zheng-dong2, ZUO Liang1
1. Key Laboratory for Anisotropy and Texture of Materials, Ministry of Education, Northeastern University, Shenyang 110819, Liaoning, China; 2. Institute for Special Steels, China Iron and Steel Research Institute, Beijing 100081, China; 3. National Engineering Laboratory for Numerical Simulation of Heavy Castings and Forgings, Erzhong (Deyang) Heavy Equipment Co., Ltd., Deyang 618000, Sichuan, China
Abstract：Due to the particularity of dimensions and working condition,the high and medium pressure rotor forgings have been the major critical component with milestone significance in the process of technological development of ultra-supercritical units. Nowadays,9%-12%Cr martensitic heat-resistant steel is widely used to produce the high and medium pressure rotor forgings for 600-620 ℃ ultra-supercritical units. The developing history of 9%-12%Cr heat-resisting material for the high and medium pressure rotor forgings in recent 60 years was comprehensively discussed. For high and medium pressure rotor forgings with different service temperatures,the material selection, chemical composition and strengthening mechanism of forgings are emphatically introduced,and the difficulties and key points of smelting process,forging process and heat treatment process in engineering manufacturing process are briefly described,which provides guidance for the engineering manufacturing of high and medium pressure rotor forgings of ultra-supercritical units at 600 ℃ and above.
李其, 陈正宗, 蒋新亮, 刘正东, 左良. 9%~12%Cr高中压转子材料发展历程与工程化关键技术[J]. 钢铁, 2021, 56(2): 40-49.
LI Qi, CHEN Zheng-zong, JIANG Xin-liang, LIU Zheng-dong, ZUO Liang. Development and engineering manufacture technology of 9%-12% Cr high and medium pressure rotor material[J]. Iron and Steel, 2021, 56(2): 40-49.
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2021, Vol. 56 
