MANUFACTURING METHOD FOR FORMING AN EROSION SHIELD AND AN EROSION-SHIELDED TURBINE BLADE

• Main Authors: SUN, Changjie, KARNATI, Sreekar, SASSATELLI, John Matthew, POLI, Anthony, JIAO, Yang
• Format: Patent
• Language: English; French; German
• Published: 01.05.2024
• Subjects: BLASTING; CASTING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; ENGINE PLANTS IN GENERAL; HEATING; LIGHTING; MACHINE TOOLS; MACHINES OR ENGINES IN GENERAL; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MECHANICAL ENGINEERING; METAL-WORKING NOT OTHERWISE PROVIDED FOR; NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES; PERFORMING OPERATIONS; POWDER METALLURGY; SOLDERING OR UNSOLDERING; STEAM ENGINES; TRANSPORTING; WEAPONS; WELDING; WORKING BY LASER BEAM; WORKING METALLIC POWDER

A method of forming an erosion shield (326) for a turbine blade (300) includes depositing a layer of filler material (402 or 328) defining an upper surface (416). The method also includes depositing a layer of erosion-resistant material (422 or 330) across the upper surface (416) of the layer of filler material (402 or 328). An interface (340) is defined between the layer of filler material (402 or 328) and the layer of erosion-resistant material (422) and has a shape of the upper surface (416). The method also includes machining the layer of filler material (402 or 328) to produce the erosion shield (326). The erosion shield (326) has the layer of erosion-resistant material (422 or 330), the machined layer of filler material (328), and the interface (340) defined therebetween. An inner surface (336) of the erosion shield is defined by the machined layer of filler material (328) that is sized and shaped for attaching to a leading edge (304) of the turbine blade (300). Each of the interface (340) and the inner surface (336) extend a length of the erosion shield (326).