Electron beam welding technique for joining two workpieces toget

Details Electron beam welding technique for joining two workpieces toget Electron beam welding technique for joining two workpieces toget

1975-10-21

1977-12-13

Truhe, J. V.

Electric heating

Metal heating

By arc

219 59, 219 60R, 219 61, 219137R, B23K 900

Patent

active

040630625

ABSTRACT:
In the preparation of plane or curved workpieces for welding together by means of an electron beam and wherein the weld takes the form of a full penetration joint, fusion lips are provided at the place where the lower welding bead forms. In the case where the workpieces are constituted by rotationally symmetrical thick-walled hollow bodies such as rotor discs for construction of turbo-machines which upon welding together form a closed cavity, the fusion lips have an annular configuration and are located at the inner radial contour of the welding interface. The workpieces are also provided with an arrangement for centering the lips and a metal foil is inserted between the lips to improve the toughness of the weld material, the foil having a carbon content lower than that of the parent metal of the workpieces.

REFERENCES:
patent: 2350716 (1944-06-01), Eissout et al.
patent: 2945942 (1960-07-01), Flynn et al.
patent: 2996600 (1961-08-01), Gardner, Jr. et al.
patent: 3003601 (1961-10-01), Ott
patent: 3183066 (1965-05-01), Lessmann et al.
patent: 3448240 (1969-06-01), Steigerwald
patent: 3458224 (1969-07-01), Freese
Metals Handbook, vol. 6, "Welding and Brazing", 8th Ed. pp. 539-540, 1971.
Metals Handbook, vol. 6, "Welding and Brazing", 8th Ed. pp. 148-151 & 223 & 233, 1971.

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