Accession Number : ADD011805

Title :   Technique of Assembling Structures Using Vapor Phase Soldering.

Descriptive Note : Patent Application,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON DC

Personal Author(s) : Peterson,N C

Report Date : 19 Oct 1984

Pagination or Media Count : 15

Abstract : This patent application pertains to a vapor phase process for assembling parts of a lightweight structure of aluminum having a multitude of joints. The process includes the following steps: (1) cleaning surfaces of all the parts; (2) selectively depositing on the surfaces a layer of nickel and then tin; (3) selectively plating on the tin layer where joints occur a lead/tin eutectic alloy solder; (4) add flux; (5) fixturing the parts together to form the structure; (6) heating the structure in a vapor phase apparatus; (7) removing the structure from the fixture; and (8) cleaning the structure. By using the above process an antenna faceplate having over 3000 joints was soldered. (Author)

Descriptors :   *PATENT APPLICATIONS, *SOLDERING, *VAPOR PHASES, *SOLDERED JOINTS, ANTENNAS, FACEPLATES, LAYERS, NICKEL, PLATING, ASSEMBLY, STRUCTURES, TIN, CLEANING, SURFACES, ALUMINUM, STRUCTURAL PROPERTIES, LIGHTWEIGHT, EUTECTICS

Subject Categories : Fabrication Metallurgy

Distribution Statement : APPROVED FOR PUBLIC RELEASE