Welding process for slotted tungsten rod

Details Welding process for slotted tungsten rod Welding process for slotted tungsten rod

1976-03-05

1977-08-30

Goldberg, E. A.

Electric heating

Metal heating

For bonding with pressure

29630A, 219 91, B23K 1116

Patent

active

040456455

ABSTRACT:
In the process of inserting and fastening a thin molybdenum ribbon into the slot of a slotted tungsten rod, for use in the press seal of a high silica glass lamp envelope, a two step welding process is used. The first weld is made with the two welding electrodes at the internal end of the slot. The second weld is made with the electrodes closer to the end of the rod.

REFERENCES:
patent: 3523173 (1970-08-01), Lull
patent: 3566008 (1971-02-01), Ettlinger
patent: 3668456 (1972-06-01), Anderson

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