摘要 |
<P>PROBLEM TO BE SOLVED: To provide an axial entry type steam turbine moving blade eliminating turbulence of a main steam flow due to leak steam, and method for manufacturing the same. Ž<P>SOLUTION: The steam turbine moving blade 5 includes a plurality of axial entry type stages where the turbine moving blade 5 is inserted in the blade groove 10 of a rotor disk 4a of a turbine rotor 4 in an axial direction. The steam turbine moving blade 5 is provided with a wearing coating 20 formed on at least one of an outer surface of a rotor hook 15 which is a convex part of the blade groove 10 and an outer surface of a blade hook 14 which is a convex part of the turbine moving blade 5, the turbine moving blade 5 assembled so as to fill the gap between the rotor hook 15 and the blade hook 14 by being inserted in the blade groove 10 while cutting the excessive thickness of the wearing coating 20, and a balance hole 9 disposed on the rotor disk 4a and having dimensions corresponding to the design values of the gap. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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