| 摘要 |
<p>TURBINE ROTOR FABRICATION A method for manufacturing a hybrid, dual property turbine wheel assembly comprising the steps of preforming a blade element and separate support ring of a superalloy material and locating the blades in support slots in the outer diameter of the support ring and radially outwardly of a preformed inner diameter underlying base tangs on each blade element; vacuum braze sealing each of the base tangs within a support slot and thereafter machining the inside diameter of the ring to expose the base tangs; thereafter joining the ring and undercut base tangs thereon to the outside diameter of a preformed disc element and vacuum braze sealing the hub disc and ring blade assemblies to produce a sealed interface region between the outside diameter of the hub element and the inside diameter of the ring and base tangs; and thereafter directly hot isostatically pressing the joined parts to form a direct diffusion bond between the tangs, ring and disc.</p> |
