Bladed disc assembly by hip diffusion bonding

Details Bladed disc assembly by hip diffusion bonding Bladed disc assembly by hip diffusion bonding

B - Operations, Transporting

21

D

B21D 53/00 (2006.01) B23K 20/02 (2006.01) F01D 5/00 (2006.01)

Patent

CA 2108671

ABSTRACT BLADED DISC ASSEMBLY BY HIP DIFFUSION BONDING A method of making a bladed disc assembly of a kind used, for example in the turbine or compressor sections of a gas turbine engine comprises forming a peripheral groove in the rim of the disc, positioning a plurality of bladed segments around the disc, each segment preferably including two or more blades extending radially from a root portion, each segment having its root portion located in the groove, securing the root portions in the groove by means of electron beam welding to form circumferential seam welds at either side of the root portions and axial seam welds between the root portions of adjacent segments thereby forming a vacuum seal, and diffusion bonding the root portions and the rim of the disc by means of isostatic hot gas pressure bonding. A bladed disc assembly made by the stated method is included.

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