Accession Number : AD0776795

Title :   Investigation of the Feasibility of Fabricating Bimetallic Coextruded Gears.

Descriptive Note : Final rept. 1 Jun 72-31 Aug 73,


Personal Author(s) : Johansen,K. M.

Report Date : DEC 1973

Pagination or Media Count : 153

Abstract : The objective of this program was to demonstrate the feasibility of fabricating aircraft-quality bimetallic gears by the coextrusion process. Several material combinations (couples) were considered. M50 and 4330V modified were selected for the gear tooth cladding and core, respectively, on the basis of (1) acceptable material properties of each after having been subjected to a compatible heat treatment, and (2) demonstrated compatibility, residual compressive stress, and high-quality bond when coextruded in small, round-rod bars. Although some difficulty was encountered in the attempts to maintain the required geometric control, small spur gears (23-tooth, 18-diametrical-pitch) were successfully fabricated with a nominal cladding (M50) thickness of 0.015 inch. (Modified author abstract)

Descriptors :   *Gears, *Extrusion, Cladding, Feasibility studies, Fabrication, Aircraft equipment, Steel

Subject Categories : Fabrication Metallurgy
      Machinery and Tools

Distribution Statement : APPROVED FOR PUBLIC RELEASE