Method of making an integral structural member

Details Method of making an integral structural member Method of making an integral structural member

1978-06-29

1980-04-15

Crane, Daniel C.

Metal fusion bonding

Process

With shaping

228265, 228193, B23K 1900

Patent

active

041979788

ABSTRACT:
A method of making an integral structural member including first and second generally planar sections joined together at a transition section which defines fillets at opposite sides thereof. A first workpiece is positioned in a die with a slug of fillet material located adjacent thereto, a second workpiece is superplastically formed against a portion of the first workpiece and against a forming surface of the die, and a portion of the second workpiece combines with the slug of fillet material against the forming surface and the first workpiece to provide the fillets along both sides of the transition section for strengthening the transition section. Temperatures and pressures required for accomplishing the superplastic forming are maintained at diffusion bonding levels for a period of time sufficient to provide diffusion bonding between the workpieces and diffusion bonding of the workpieces to the fillet material.

REFERENCES:
patent: 3340101 (1967-09-01), Fields, Jr. et al.
patent: 3453717 (1969-07-01), Pfaffenberger et al.
patent: 3547599 (1970-12-01), Muser et al.
patent: 3918623 (1975-11-01), Ishiguro et al.
patent: 3920175 (1978-11-01), Hamilton et al.
patent: 3950841 (1976-04-01), Conn
patent: 4071183 (1978-01-01), Cogan
patent: 4084029 (1978-04-01), Johnson et al.
patent: 4117970 (1978-10-01), Hamilton et al.

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