Method for manufacturing anode cylinders of electron tubes

Details Method for manufacturing anode cylinders of electron tubes Method for manufacturing anode cylinders of electron tubes

1984-02-24

1986-02-18

Larson, Lowell A.

Metal fusion bonding

Process

With shaping

72348, 72349, 72368, 228119, 228191, B21C 3708, B21C 3722, B21D 2228

Patent

active

045708436

ABSTRACT:
An anode cylinder of a magnetron is formed of a rectangular copper plate member. The plate member is curved in a rolling process to be formed into a cylindrical primary workpiece. In a first cold extrusion process, the primary workpiece is forced successively into a first die having an inner diameter shorter than the outer diameter of the primary workpiece and a second die having an inner diameter shorter than that of the first die and arranged in line with the first die. Thus, the primary workpiece is continuously reduced in its outer diameter to be formed into a secondary workpiece. The thickness reduction rate of the primary workpiece used during its passage through each of the first and second dies is limited to 3% or less. The secondary workpiece has its unnecessary portions removed in a cutting process and its seam filled up airtightly in an airtight bonding process.

REFERENCES:
patent: 1236470 (1917-08-01), Neuberth
patent: 1274359 (1918-07-01), Limont
patent: 1387199 (1921-08-01), Small
patent: 1772187 (1930-08-01), Manning
patent: 1980363 (1934-11-01), Staples
patent: 2014605 (1935-09-01), Zimmerman et al.
patent: 2168300 (1939-08-01), Lemming
patent: 2384444 (1945-09-01), Cravener, Jr. et al.
patent: 3442008 (1969-05-01), Johnson
patent: 3451246 (1969-06-01), Miller et al.
patent: 3796085 (1974-03-01), Fisher et al.
patent: 3930396 (1976-01-01), Martinez
patent: 3945231 (1976-03-01), Imazu et al.

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