Metal fusion bonding – Including means to apply flux or filler to work or applicator – By partial or total immersion of work or applicator into liquid
Patent
1976-01-07
1976-11-09
Smith, Al Lawrence
Metal fusion bonding
Including means to apply flux or filler to work or applicator
By partial or total immersion of work or applicator into liquid
228257, 228260, B23K 306
Patent
active
039906213
ABSTRACT:
A mass wave soldering system is described in which a standing wave of molten solder is formed from a static head of solder. The system comprises a soldering apparatus which has a two-compartment solder reservoir. The first compartment is designed to hold a first portion of the solder supply at a first liquid level with a layer of oil floating on the solder therein. The second compartment is designed for holding a second portion of the solder supply at a second liquid level above the first liquid level with a layer of oil floating on the solder therein. A sump and nozzle are positioned in the first compartment so that the sump is partially submerged in the molten solder therein, with the nozzle above the solder and oil levels therein, but below the solder and oil levels in the second compartment. The apparatus also includes a first conduit having an inlet disposed in the second compartment and an outlet disposed in the sump for carrying a flow of molten solder between the second compartment and the sump, and a second conduit having an inlet disposed in the second compartment for carrying a flow of oil from the second compartment and for depositing the oil onto the solder overflow adjacent the nozzle. Completing the apparatus are a conduit and pump for transferring molten solder and oil from the first compartment into the second compartment so as to maintain the liquid level of solder and the oil in the second compartment.
REFERENCES:
patent: 2469392 (1949-05-01), Jones et al.
patent: 3438386 (1969-04-01), Diggins et al.
patent: 3612388 (1971-10-01), Wegener et al.
Boynton Kenneth G.
Hicks Alvin W.
Johnston Warren L.
Walega, Jr. John
Hollis Engineering, Inc.
Ramsey K. J.
Smith Al Lawrence
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