Method for eliminating low cycle fatigue cracking in integrally

Details Method for eliminating low cycle fatigue cracking in integrally Method for eliminating low cycle fatigue cracking in integrally

1982-11-22

1985-08-27

Moon, Charlie T.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

291568R, 295272, 72 46, 416241R, 416244A, B21K 304, B23P 1502

Patent

active

045369321

ABSTRACT:
Stress relief for the rim of an integrally bladed rotor made from a forging preform is provided by forming a plurality of radially extending circumferentially spaced-apart slots around the periphery of the preform. The slots are forged closed in a subsequent forming step. An oxide layer on the slot surfaces prevents the surfaces from bonding together when forged closed. The blades are formed between slots during the forging or by machining after forging.

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