火电机组高中压转子选材的研究进展

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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.

Key words： coal-fired power generation ultra-supercritical steam turbines high-pressure and medium-pressure rotors 9—12%Cr heat-resistant steels nickel-based superalloys

Published: 05 June 2022 Online: 2022-06-08

CLC number:

TK26

Fund:National Key R & D Program of the Ministry of Science and Technology(2021YFB3704104).

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	Articles by authors
	LI Cuiqin
	PEI Yubing
	FAN Hua
	GUO Weihua
	WANG Tianjian
	WU Bi
	GONG Xiufang

Cite this article:

LI Cuiqin,PEI Yubing,FAN Hua, et al. Research Progress on Materials of High-pressure and Medium-pressure Rotors for Thermal Power Plants[J]. Materials Reports, 2022, 36(Z1): 22010097-7.

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http://www.mater-rep.com/EN/ OR http://www.mater-rep.com/EN/Y2022/V36/IZ1/22010097

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