Browse Prior Art Database

Joining Metals

IP.com Disclosure Number: IPCOM000093803D
Original Publication Date: 1966-Feb-01
Included in the Prior Art Database: 2005-Mar-06
Document File: 2 page(s) / 45K

Publishing Venue

IBM

Related People

Munroe, RA: AUTHOR

Abstract

Prior to joining, metal plates 10 and 11 are plated with tin layers 12 and 13. Tin-lead can also be used but is less preferable. Other alloys can be used including the indium lead and bismuth groups. After plating plates 10 and 11 are placed with layers 12 and 13 in contact with fins 14 for final assembly and subjected to sufficient temperature, 575 degrees F to reflow tin in fluid or furnace. A scavenging gas or flux can be used to clean the joints.

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Joining Metals

Prior to joining, metal plates 10 and 11 are plated with tin layers 12 and 13. Tin-lead can also be used but is less preferable. Other alloys can be used including the indium lead and bismuth groups. After plating plates 10 and 11 are placed with layers 12 and 13 in contact with fins 14 for final assembly and subjected to sufficient temperature, 575 degrees F to reflow tin in fluid or furnace. A scavenging gas or flux can be used to clean the joints.

If the flux is used, it has to be cleaned from the parts. Alternatively, layers 12 and 13 can be tin foil prior to fusing. Upon heating the tin foil is fused to plates 10 and 11 and fins 14.

This method can be used where good heat transfer plus good corrosion resistance and retention of the base metal strength is desired. The use of tin in this method is particularly suitable where plates 10 and 11 are made of aluminum and magnesium materials.

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