Patent ID: 8356980
Filing Date: 2013-01-22
Classification: B23K,B23P,F01D,F05B,F05D,Y10T

Abstract:
1. A method for joining a cast metal blade ring, having blades arrayed about its outer periphery and a frustoconical inner perimeter and a metal hub, having a disk part with a disk side configured to correspond to at least a portion of the blade's inner ring, the method comprising: mounting one of the blade ring and the hub in a holder; mounting the remaining one of the blade ring and the hub in a rotatable holder; heating at least one of the ring interior wall of the blade ring and the hub disk part to a temperature of about (1000° F.)538° C. less than the melting point of the surface; and pressing at least the portion of the ring interior wall of the blade ring and the portion of the disk side of the hub disk part together with a selected force while the rotatable portion of the rotation holder is rotating to weld together the ring interior wall and the disk side.