B - Operations – Transporting – 23 – K
Patent
B - Operations, Transporting
23
K
B23K 1/012 (2006.01) B23K 1/08 (2006.01) B23K 3/00 (2006.01) B23K 3/06 (2006.01)
Patent
CA 2125040
A cover plate (34) extends over a solder reservoir (10) and has a slot (40) for a solder wave (22) to extend up above the plate, a gas excluding oxygen is supplied under the cover plate (34) and flows up through the slot (40) on both sides of the solder wave to blanket the solder wave. It has been found that oxygen content on the surface of the solder and on the solder wave (22) is reduced so that clean oxide free soldering occurs. The apparatus has a solder reservoir (10) for holding solder with a solder nozzle (18) projecting therefrom, a pump (20) for forming a solder wave (22) from the nozzle (18), a cover plate (34) for covering at least a portion of the reservoir (10) having a longitudinal slot (40) for the solder wave (22) to pass therethrough. Provision is made for supplying pressurized gas, which is oxygen free, to pass upwards through the slot (40) on both sides of the solder wave (22) to provide a gas blanket over the solder wave (22), and a conveyor (26) conveys elements (24) to be soldered to pass through the sod- er wave (22)
Chartrand Raymond Joseph
Gileta John Harry
Sellen Derek Edward
Fetherstonhaugh & Co.
Speedline Technologies Inc.
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