X-ray or gamma ray systems or devices – Source – Target
Patent
1998-09-04
2000-12-05
Bruce, David V.
X-ray or gamma ray systems or devices
Source
Target
378121, H01J 3510
Patent
active
061577022
ABSTRACT:
In an X-ray tube target, a shaft is welded to the anode target, the shaft typically being TZM or a molybdenum alloy. This defines a first weld location and creates an integral shaft-target assembly. The shaft-target assembly is then machined. A heat sink material, such as graphite, is brazed to the integral shaft-target assembly. A hub is then welded to the shaft, at an end opposite the target, defining a second weld location and creating a hub-target assembly. The hub can be columbium or columbium alloy. Subsequently, the hub-target assembly can be machined. Having a dual weld procedure, and eliminating the subsequent brazing step to join the hub to the shaft, enables the alloys to maintain their high strength without annealing, thereby allowing the shaft materials to keep their high strength and reducing plastic deformation at the lower (hub) portion of the shaft.
REFERENCES:
patent: 4777643 (1988-10-01), Devine, Jr.
patent: 5498187 (1996-03-01), Eggleston et al.
patent: 5592525 (1997-01-01), Reznikov et al.
patent: 5655000 (1997-08-01), Benz et al.
patent: 5742123 (1998-04-01), Nagayama
Metcalf Christopher A.
Reznikov Gregory
Bruce David V.
Cabou Christian G.
General Electric Company
Haushalter B. Joan
Hobden Pamela R.
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