System and method for manufacturing x-ray tubes having glass env

Electric lamp or space discharge component or device manufacturi – Process – With assembly or disassembly

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445 43, 445 70, 2282341, 228 151, H01J 940, B23K 3102

Patent

active

057228701

ABSTRACT:
Improved systems and methods are disclosed for exhausting and combined exhausting and seasoning of x-ray tubes having glass envelopes for high performance x-ray system having a rotating anode therein. The systems and methods include using a metal tubulation having a diameter greater than about 20 mm operatively connected to a glass tubulation having a diameter greater than about 20 mm which is in turn connected to a glass x-ray tube envelope; positioning a metal disk inside the metal tubulation, the metal disk having a smaller diameter than at least one portion of the metal tubulation, and connecting a vacuum pump to the metal portion of the tubulation; positioning heating means on the outside of the metal portion of the tubulation, heating the anode of the x-ray tube to a temperature inside the x-ray tube envelope to about 1500.degree. C., positioning the metal disk inside the metal portion of the tubulation proximate the position of the heating means on the outside of the metal portion of the tubulation, heating the metal portion of the tubulation proximate the metal disk to about 500.degree. C. or a temperature sufficient to reflow the braze alloy, checking for bonding between the metal portion of the tubulation and the metal disk; and cooling the metal portion of the tubulation proximate the metal disk, thereby sealing the metal portion of the tubulation to the glass envelope/glass tubulation connection.

REFERENCES:
patent: 1489099 (1924-04-01), Reynolds
patent: 1915361 (1933-06-01), Gustin
patent: 2946641 (1960-07-01), Wisner
patent: 4578043 (1986-03-01), Teshima et al.
patent: 5598966 (1997-02-01), Romano et al.

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