| 摘要 |
PROBLEM TO BE SOLVED: To simplify manufacturing processes and reduce costs by casting a moving blade in a state of having one chamfered portion along one end of the platform and by machine-grinding the platform end to cut off the end of the chamfered portion. SOLUTION: A turbine moving blade is manufactured by casting a moving blade first equipped with a cast chamfered portion 24 along each side end 22 of a platform 18. Since the chamfered portion 24 is cast together with the remainder of the moving blade, it can be correctly positioned along each side end 22. The side end 22 of the platform is cut by precision grinder so that, for example, the cast chamfered portion 24 is shortened or its end is cut off in the circumferential direction to its design dimensions or to a platform width B. The chamfered portion 24 is therefore accurately formed along the two side ends 22 of each platform 18. At the same time, the width of each chamfered portion 24 is completed in the same way as in accurately finishing opposing side ends 22 to the design platform width B. |
