Accession Number : ADD014352

Title :   Flexible Extendable Backing Shield for Welding Reactive Metals.

Descriptive Note : Patent, Filed 20 Apr 88, patented 12 Sep 89,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : DeNale, Robert ; Lukens, William E ; Marsh, Luther A

Report Date : 12 Sep 1989

Pagination or Media Count : 4

Abstract : This patent discloses a flexible extendable backing shield for use with the welding of reactive metals such as titanium. The backing shield provides a means for selectively distributing the inert gas along the length of the shield and then diffusing the inert gas to the root side of the weld to prevent oxidation and embrittlement of the weld root. The backing shield is of modular configuration so that a plurality of the devices can be readily connected together to shield a variety of complex shapes. Patents; PAT-CL-219-74. (EDC)

Descriptors :   *PATENTS, *SHIELDING, *INERT GAS WELDING, DIFFUSION, EMBRITTLEMENT, EXTENDABLE STRUCTURES, FLEXIBLE STRUCTURES, GASES, INERT MATERIALS, LENGTH, METALS, MODULAR CONSTRUCTION, OXIDATION, REACTIVITIES, SHAPE, SIDES, TITANIUM, WELDS

Subject Categories : Fabrication Metallurgy

Distribution Statement : APPROVED FOR PUBLIC RELEASE