EXTRUDING AND DRAWING MOLYBDENUM TO COMPLEX THIN H-SECTION
Interim technical engineering rept. no. 4, 1 May-31 Jul 1964
ALLEGHENY LUDLUM STEEL CORP BRACKENRIDGE PA
Pagination or Media Count:
Sixteen H-shaped extrustions 14 TZM and 2 stainless were made with new support tooling. No failure or distortion occurred in the tooling, regardless of liner pressure up to 237,000 psi. Reasonable quality and dimensional runout were found in TZM extrusions at a reduction ratio of 431 from 3200F billet temperature with the use of flame-sprayed zirconia dies. Similar extrusions from 3350F were poor. The use of pressed and sintered solid zirconia nibs was demonstrated successfully for the extrusion of H shapes. Dimensional runout for both stainless and TZM was remarkably good and liner pressures were lower than that required for extrusions with segmented, coated dies.
- Fabrication Metallurgy