| 摘要 |
A method of making jet engine turbine, fan or compressor blades containing longitudinal internal lightening openings by locating a plurality of rib elements between exterior cover plates, locating a removable spacer element between each of the adjacent rib elements, placing the resulting assembly in a die cavity, placing the assembly and die in a thin-walled retort, applying heat energy to the assembly sufficient to promote solid state diffusion of the material of construction of the assembly, drawing a vacuum about the assembly, applying sufficient compressive pressure to the assembly by a press operatively engaging the die to cause the material to flow plastically in combination with the applied heat energy, maintaining the application of heat energy and pressure sufficient to effect homogenization of the interfacial joints of the assembly, removing the bonded assembly from the die and leaching the spacer elements from the assembly. |
