Patent ID: 6095756
Filing Date: 2000-08-01
Classification: C22C,F01D,F05D

Abstract:
A turbine blade made by a precision casting process using a high-Cr precision casting material consisting essentially of, on a weight percentage basis, 0.08 to 0.14% carbon, 0.15 to 0.25% silicon, 0.01 to 1% manganese, 8.5 (inclusive) to 9.5% (not inclusive) chromium, 0.01 to 0.6% nickel, 0.1 to 0.2% vanadium, 0.03 to 0.06% niobium, 0.02 to 0.07% nitrogen, 0.1 to 0.7% molybdenum, 1 to 2.5% tungsten, 0.01 to 4% cobalt, and the balance being iron and incidental impurities, wherein the turbine blade has an airfoil of hollow structure and a shroud with a depression formed in the surface thereof, and a metallic plate in the depression of the shroud.