The first piece appraisal meeting for the first stage stationary blade casting of 300MW class F heavy-duty gas turbine was held in Beijing. 13 experts from the “two engines” special expert advisory committee, three powers, Beijing University of science and technology, state machinery group, Fushun Special Steel and other units reviewed and agreed that: China Reburning, metal Institute of Chinese Academy of Sciences, Jiangsu Yonghan and relevant units cooperated in fighting and overcoming difficulties, and delivered a set of quality products A set of curing process system and quality assurance system has been delivered for the qualified blades, which lays a good foundation for the design of turbine blades and agrees to pass the first piece identification. The first piece of turbine first stage stator blade casting passed the appraisal successfully, marking that China has taken a solid step to break through the technical blockade of foreign hot end core components and realize the independent development of heavy gas turbine.

The first stage stationary blade of turbine is a typical hot end part of heavy gas turbine, and its core manufacturing technology has been blocked by foreign countries. After a long time of cooperative operations, China National reburning, metal Institute of Chinese Academy of Sciences, Jiangsu Yonghan and other relevant units have successfully overcome many difficulties and created many records: the first time in China to independently design large-scale first-stage stationary blades of heavy-duty gas turbines; the first time in China to smelt the first-stage master alloy of stationary blades with completely independent intellectual property rights, to conquer pure purification smelting technology; the first time in China to independently cast heavy-duty gas turbines The large-scale first stage stationary blade conquers the precision casting technology of large-scale complex blades.