Electric heating – Metal heating – By arc
Patent
1986-07-31
1987-10-13
Albritton, C. L.
Electric heating
Metal heating
By arc
219121LD, 219121LU, B23K 2600
Patent
active
047000449
ABSTRACT:
Fine wires are soldered without flux to solder pads on a flexible circuit of a workpiece by a laser. The laser beam is aligned and moved over the solder pad to describe a rectangle by movement of mirrors on a programmed, motor driven X-Y-Z linear table. Wires are deeply sunk into the solder pads by the weight of a cone brought against the wire carried by the X-Y-Z table. Vaporized insulation is restrained within the cone to maintain a clean microelectronic workpiece.
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Page 71 describes Laser Soldering from Laakmann Electro-Optics, Inc.
A Page entitled "Appollo Lasers-Laser Micro Soldering System", Bulletin No. APO-3311 from Apollo Lasers, Inc., of Chadsworth, Calif.
Article entitled "Soldering with Light", by Carl Miller, pp. 83-86, appear in Photonics Spectra of May 1983.
Bentz Kenneth S.
Field Terrence G.
Hokanson John M.
Ziegler David A.
Albritton C. L.
Hutchinson Technology Inc.
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