Electric heating – Heating devices – Combined with container – enclosure – or support for material...
Patent
1997-01-07
1998-06-23
Walberg, Teresa J.
Electric heating
Heating devices
Combined with container, enclosure, or support for material...
219411, 29611, 392436, 392438, F27B 906, F27D 1102, H05B 320
Patent
active
057708355
ABSTRACT:
In accordance with the present invention, there is provided a soldering process comprising the steps of: providing in a furnace first and second heaters each adapted to emit infrared energy; setting a printed circuit boad, which has a solder paste and an electronic component thereon, in the furnace; heating the printed circuit boad with the first heater; and heating the electronic component with the second heater; wherein the first and second heaters have different radiation spectra such that infrared energy irradiated by the first heater is more absorbed by the printed circuit board and less absorbed by the electronic component than that irradiated by the second heater. The present invention also provides a soldering apparatus for use in such soldering process.
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Sakuyama Seiki
Uchida Hiroki
Watanabe Isao
Fujitsu Limited
Pelham J.
Walberg Teresa J.
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