Electron beam machining using rotating and shaped beam power dis

Details Electron beam machining using rotating and shaped beam power dis Electron beam machining using rotating and shaped beam power dis

1993-03-18

1996-07-09

Hoang, Tu

Electric heating

Metal heating

By arc

21912113, 2504922, B23K 1500

Patent

active

055346774

ABSTRACT:
An apparatus and method for electron beam (EB) machining (drilling, cutting and welding) that uses conventional EB guns, power supplies, and welding machine technology without the need for fast bias pulsing technology. The invention involves a magnetic lensing (EB optics) system and electronic controls to: 1) concurrently bend, focus, shape, scan, and rotate the beam to protect the EB gun and to create a desired effective power-density distribution, and 2) rotate or scan this shaped beam in a controlled way. The shaped beam power-density distribution can be measured using a tomographic imaging system. For example, the EB apparatus of this invention has the ability to drill holes in metal having a diameter up to 1000 .mu.m (1 mm or larger), compared to the 250 .mu.m diameter of laser drilling.

REFERENCES:
patent: 3714416 (1973-01-01), Link et al.
patent: 3875416 (1975-04-01), Spicer
patent: 4328411 (1982-05-01), Haller et al.
patent: 4469950 (1984-09-01), Taylor et al.
patent: 4607380 (1986-08-01), Oliver
patent: 5149976 (1992-09-01), Sipma

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