EXTRUDING AND DRAWING MOLYBDENUM TO COMPLEX THIN H-SECTION.

Abstract

Thirteen H-shaped extrusions of wrought arc-cast TZM were made using maximum possible billet length of nine inches. A completed extrusion was possible to .058-.062-inch web thickness from 3360F billet temperature. This extrusion was also accomplished from 3300F with low carbon, wrought arc-cast TZM. As-extruded quality was good in surface finish and web dimensional run-out for twenty-foot lengths. However, considerable growth in fillet-radii occurred starting at a location of ten to twelve feet from the extrusion front-end. During extrusion, a failure in the tongue portion of a pressed and sintered solid zirconia nib resulted in considerable damage to support tooling. However, several previous H-shaped TZM extrusions were accomplished in this program with excellent results using solid zirconia die nibs. Extrusion trials with plasma-sprayed zirconia indicated promising results. (Author)

Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1965
Accession Number
AD0611589

Entities

People

  • P. A. Santoli

Tags

DTIC Thesaurus Topics

  • Elements
  • Extrusion
  • Fabrication
  • Geometry
  • Group 6 Elements
  • Material Forming Processes
  • Materials Processing
  • Mathematics
  • Metals
  • Molybdenum
  • Physical Properties
  • Thickness

Fields of Study

  • Materials science

Readers

  • Metallurgy