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由美国GE公司开发的用于大容量机组的长叶片，在气动性能，强度、效率等方面具有一系列优点c其中普遍选用的大叶片钢为X20CrMoV－121（相当于20CrllMolV）。本文对20xl04kw汽轮机85lmm末级叶片国产化研制及生产工艺的制定提供一I实验依据。经几个单位共同研究这种大叶片钢的热
The long blade developed by GE for large capacity unit has a series of advantages in terms of aerodynamic performance, strength and efficiency. The widely used large blade steel is X20CrMoV-121 (equivalent to 20CrllMolV). In this paper, 20xl04kw turbines 85lmm final stage blade production and development of production technology to provide an experimental basis. After several units to study the heat of this large leaf steel