Metal fusion bonding – Process – With pretreating other than heating or cooling of work part...
Patent
1994-12-15
1996-08-06
Heinrich, Samuel M.
Metal fusion bonding
Process
With pretreating other than heating or cooling of work part...
228232, 4273884, B23K 120, H05K 334
Patent
active
055425950
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.
Kester Solder; Kester 970 VOC-Free, No-Clean Soldering Flux; Date Unknown.
Heinrich Samuel M.
Martin Paul W.
NCR Corporation
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