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Browse Prior Art Database

Solder Coating Thin Copper Wire

IP.com Disclosure Number: IPCOM000089975D
Original Publication Date: 1968-Dec-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 24K

Publishing Venue

IBM

Related People

Jones, AD: AUTHOR [+3]

Abstract

Thin, for example, 3 mil diameter, copper wire 1 is passed through tube 2, made of a heat-resistant plastic material, into a bath of molten solder 3. Wire 1 then passes around pulley 4, out of solder 3 through tube 5 of heat-resistant plastic material, and onto take-up spool 6. Tube 2 retains boiling flux 7 floating on the surface of solder 3. Tube 5 retains boiling paraffin, kerosene, 8 floating on the surface of solder 3. In operation, wire 1 is drawn through solder 3 at a speed within the range 100 to 500 feet per minute. As wire 1 passes down tube 2, flux vapor condenses on such wire before it enters the molten flux. To ensure uniform coating of wire 1, it leaves the bath normal to the meniscus of solder 3. Wire 1 is cooled in an inert atmosphere of paraffin vapor formed above boiling paraffin 8.

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Solder Coating Thin Copper Wire

Thin, for example, 3 mil diameter, copper wire 1 is passed through tube 2, made of a heat-resistant plastic material, into a bath of molten solder 3. Wire 1 then passes around pulley 4, out of solder 3 through tube 5 of heat-resistant plastic material, and onto take-up spool 6. Tube 2 retains boiling flux 7 floating on the surface of solder 3. Tube 5 retains boiling paraffin, kerosene, 8 floating on the surface of solder 3. In operation, wire 1 is drawn through solder 3 at a speed within the range 100 to 500 feet per minute. As wire 1 passes down tube 2, flux vapor condenses on such wire before it enters the molten flux. To ensure uniform coating of wire 1, it leaves the bath normal to the meniscus of solder 3. Wire 1 is cooled in an inert atmosphere of paraffin vapor formed above boiling paraffin 8. The thickness of the solder coating provided on wire 1 depends on the speed at which it is drawn through the bath.

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