Metal fusion bonding – Process – With protecting of work or filler or applying flux
Patent
1997-02-04
1998-03-03
Heinrich, Samuel M.
Metal fusion bonding
Process
With protecting of work or filler or applying flux
228232, 427348, 427378, H05K 334, B23K 120
Patent
active
057225826
ABSTRACT:
A hot air circulation apparatus and method for wave soldering machines which heats air from a high-pressure air source and directs it at the flux applied to a printed circuit board. The heated and pressurized air also circulates air within the wave soldering machine to force the moisture out. A plurality of hot air knives are mounted adjacent heaters within the wave soldering machine and are coupled to the pressurized air source. The hot air knives include a hollow metal cylindrical member which conducts heat from the heater, and contain a plurality of orifices which increase the pressure of the air and direct the air at the flux.
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List of 76 patents from patent search.
IBM Technical Disclosure Bulletin, Solder Wave Air Knife; Jul. 1985, vol. 28, No. 2.
Kester Solder, The Solder Connection, Kester 970 VOC-Free, No-Clean Soldering Flux, Date Unknown, C110.
Heinrich Samuel M.
Martin Paul W.
NCR Corporation
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