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Water Spray Flux Cleaning Machine

IP.com Disclosure Number: IPCOM000090662D
Original Publication Date: 1969-Jun-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 39K

Publishing Venue

IBM

Related People

Balboni, HA: AUTHOR [+3]

Abstract

The machine removes water-soluble flux residues from circuit cards and components. Outward breathing of components containing leaks or pin holes is maintained so that the water or flux residues are prevented from entering the components. A cleaning method is employed which utilizes hot deionized water in a countercurrent flow arrangement so that the parts are exposed to used cold water first and clean hottest water last. Ascending temperature during cleaning prevents leaky components from breathing in cleaning water or residues. For the same reason, the parts are dried immediately by a forced hot air unit in series with the cleaning stages of the machine and without any intervening cooling.

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Water Spray Flux Cleaning Machine

The machine removes water-soluble flux residues from circuit cards and components. Outward breathing of components containing leaks or pin holes is maintained so that the water or flux residues are prevented from entering the components. A cleaning method is employed which utilizes hot deionized water in a countercurrent flow arrangement so that the parts are exposed to used cold water first and clean hottest water last. Ascending temperature during cleaning prevents leaky components from breathing in cleaning water or residues. For the same reason, the parts are dried immediately by a forced hot air unit in series with the cleaning stages of the machine and without any intervening cooling. The machine uses deionized water at 180 degrees F at the part exit end with the water flowing countercurrently through four stages or wash tanks to the part input end where it leaves at 130 degrees F. The water flows over weir overflows or down flow headers which direct the water from the top of one tank to the bottom of the succeeding tank. The parts are not immersed in the water at any time, the cleaning being accomplished by eight oscillating spray heads. Four heads are located on each side of the machine. The machine is insulated and enclosed to contain the water spray and vapors generated and can operate continuously.

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