Accession Number : AD0437306

Title :   EXTRUDING AND DRAWING MOLYBDENUM TO COMPLEX THIN H-SECTION.

Descriptive Note : Interim technical engineering rept. no. 2, 1 Oct31 Dec 63,

Corporate Author : ALLEGHENY LUDLUM STEEL CORP BRACKENRIDGE PA

Personal Author(s) : Santoli,P. A.

Report Date : JAN 1964

Pagination or Media Count : 38

Abstract : Sixteen solid round extrusions of TZM were made primarily to determine suitable die materials. Reduction rataos at 45:1 and 55:1 were accomplished from a billet heating temperature range of 3000 to 3500 F. Extrusion dies were prepared with flame-sprayed zirconia deposits on AISI H-13 tool steel and with pressed and sintered solid zirconia nibs. Good extrusion results were obtained with the use of .025 and .035-inch sprayed zirconia at a reduction ratio of 45:1. Extrusions at 55:1 were poor regardless of sprayed coating thickness and billet heating temperature. Good extrusion results were also obtained with pressed and sintered solid zirconia nibs at a reduction ratio of 45:1. Extrusion tooling performed well up to 237,000 psi liner pressure except for noticeable wear which occurred at the liner working surface. On the basis of good surface quality and dimensional runout on round extrusios, H-shaped dies will be prepared with .035-in. flame-sprayed zirconia as well as with pressed and sintered solid zirconia. (Author)

Descriptors :   (*MOLYBDENUM ALLOYS, EXTRUSION), (*DRAWING(FORMING), MOLYBDENUM ALLOYS), SINTERING, DIES, LUBRICATION, CERAMIC COATINGS, MICROSTRUCTURE, SURFACES, PROCESSING, TITANIUM ALLOYS, ZIRCONIUM ALLOYS, HARDNESS, GRAIN STRUCTURES(METALLURGY), ZIRCONIUM OXIDES

Distribution Statement : APPROVED FOR PUBLIC RELEASE