Metal working – Means to assemble or disassemble – Puller or pusher means – contained force multiplying operator
Patent
1988-06-03
1989-04-11
Goldberg, Howard N.
Metal working
Means to assemble or disassemble
Puller or pusher means, contained force multiplying operator
2940207, 2940208, 2940218, 294264, 29460, 295274, B21K 300
Patent
active
048193135
ABSTRACT:
A method of salvaging stationary blades of a steam turbine cylinder includes tack welding abutting stationary blade platforms, cutting stationary blade roots out of the steam turbine cylinder, machining a side of the root and platform for each stationary blade to reduce thickness along the side and mounting the stationary blades in a new cylinder having mounting grooves for each row of stationary blades. Each mounting groove has an annular recess formed in a sidewall thereof and the cylinder has a sloping surface which faces a machined area of the root and platform of the stationary blades. The space between the sloped surface and the machined area provides access for a piece of caulking material and a caulking tool, whereby the caulking material is deformed to make a key connection between the cylinder and the stationary blade roots.
REFERENCES:
patent: 952317 (1910-03-01), Eyermann
patent: 3317988 (1967-05-01), Endres
patent: 4611744 (1986-09-01), Fraser et al.
patent: 4633554 (1987-01-01), Clark et al.
patent: 4726104 (1988-02-01), Foster et al.
patent: 4741128 (1988-05-01), Reaves et al.
Cuda Irene
Goldberg Howard N.
Westinghouse Electric Corp.
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