Research Progress on Materials of High-pressure and Medium-pressure Rotors for Thermal Power Plants
LI Cuiqin1,2, PEI Yubing1,2, FAN Hua1,2, GUO Weihua1,2, WANG Tianjian1,2, WU Bi1,2, GONG Xiufang1,2
1 State Key Laboratory of Long-life High-temperature Materials, Deyang 618000, Sichuan, China 2 Dongfang Electric Group Dongfang Steam Turbine Co., Ltd., Deyang 618000, Sichuan, China
Abstract: For saving resources and protecting the environment, traditional coal-fired units are faced with the major challenges of reducing coal consumption and improving thermal efficiency. The improvement of thermal efficiency depends on the optimization of steam parameters of the units and the upgrading of materials. As one of the core hot-end components of the steam turbine, the rotor serves in high-temperature and high-pressure steam and bears various alternating loads. With steam temperature rising from 600 ℃ to 700 ℃ above, materials of rotors are facing a more severe challenge that materials of rotors are gradually transitioning from traditional 9—12%Cr heat-resistant steels to nickel-based superalloys. Worldwide countries have formulated research plans for rotor materials used by steam turbines with different parameters. This paper discusses the precautions for rotor material and the research progress in major countries in the world, and reviews the development of domestic steam turbines. It also reviews the foreign research results on the materials for 700 ℃-level high-pressure and medium-pressure rotors, which can provide a certain perspective and reference for the research and development of 700 ℃-level steam turbines in our country.
李翠芹, 裴玉冰, 范华, 郭维华, 王天剑, 吴比, 巩秀芳. 火电机组高中压转子选材的研究进展[J]. 材料导报, 2022, 36(Z1): 22010097-7.
LI Cuiqin, PEI Yubing, FAN Hua, GUO Weihua, WANG Tianjian, WU Bi, GONG Xiufang. Research Progress on Materials of High-pressure and Medium-pressure Rotors for Thermal Power Plants. Materials Reports, 2022, 36(Z1): 22010097-7.
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