Accession Number : AD0677555

Title :   TUNGSTEN INERT GAS SPOT BRAZING,

Corporate Author : GENERAL DYNAMICS/ASTRONAUTICS SAN DIEGO CALIF

Personal Author(s) : Davis,C. P.

Report Date : JUL 1961

Pagination or Media Count : 17

Abstract : At any time during fabrication using either resistance or fusion welds, annealing takes place in the weld spot. In spot brazing, the tungsten arc causes fusion in the top member or bracketry and generates sufficient heat to melt the braze foil sandwiched between the bracket and missile skin to create a bond. Experiments in the development of this technique indicated the standard spot gun equipment was most suitable. Cleaning of materials before joining presented several problems. Etching gave the best results in this respect, but was not the most practical. Degreasing, sanding and dry air from a hair dryer to rid parts of dust proved to be the best method. An evaluation of six different braze alloys using .020 inches thickness material was made and the two that performed the best were used for tests. Results of these tests have been tabulated within the report. It is concluded that with properly made brazed spots, bracketry can be subsequently removed from the missile skin if required, without damage resulting to either bracketry or missile skin. (Author)

Descriptors :   (*GUIDED MISSILE COMPONENTS, BRAZING), AIRFRAMES, BRAZING ALLOYS, RARE GASES, TUNGSTEN, ARC MELTING, GUIDED MISSILES

Subject Categories : Metallurgy and Metallography
      Fabrication Metallurgy

Distribution Statement : APPROVED FOR PUBLIC RELEASE