The form of lacing wires used in the last stage of steam turbines is commonly cylindrical lacingwire or elliptic lacingwire.
汽轮机末级长叶片常用的拉金形式有圆柱形拉金和椭圆形拉金。
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Study on the characteristics of variable condition of the same cascade equipped with a cylindrical or a elliptic lacingwire is made in this paper with CFD.
The chemical composition, metallographic structure, hardness and surface of fracture are analyzed herein for the broken blade and lacingwire in order to find the cause of blade fracture.