Metal fusion bonding – With control means responsive to sensed condition – Work-responsive
Patent
1987-05-22
1988-06-21
Godici, Nicholas P.
Metal fusion bonding
With control means responsive to sensed condition
Work-responsive
228 47, 228 565, 228264, 228191, 228 20, 269 73, 269289MR, 269254CS, B23K 3704, B23K 2900, B23K 304
Patent
active
047520256
ABSTRACT:
A repair terminal is disclosed for reworking defective components on printed circuit boards. The terminal has a heater arm which lowers itself over the component, and directs hot gas thereon. A vacuum shroud surrounds the heat zone around the component and removes excess heat so as to minimize damage to surrounding components. The heater arm has inner and outer tubes, the inner tube delivering hot gas the outer tube removing it. Thus the outer tube prevents an operator from being burned by the dangerously hot temperature of the inner tube. A workholder is also disclosed for holding and aligning the circuit board with the heater arm. The workholder is capable of adjustment along the X- and Y-axes as well as in the theta orientation.
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IBM Technical Disclosure Bulletin, "Rework Fixture for Surface Mounted Components", vol. 29, No. 11, pp. 4718, 4719, Apr. 1987.
"More Than Just Hot Air," by Steve Stach and Jonas Aleksonis, Austin American Technology, Austin, Texas, Feb. 1987, Circuits Manufacturing, pp. 45-46, 48.
"A Revolution in IC Packaging", by T. J. Byers, May 1986, Radio-Electronics, pp. 59-62.
Scrogum Carl R.
Stach Steven R.
Austin American Technology
Godici Nicholas P.
Heinrich Samuel M.
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