Accession Number : AD0286932

Title :   MOLYBDENUM ALLOY EXTRUSION DEVELOPMENT PROGRAM

Corporate Author : ALLEGHENY LUDLUM STEEL CORP BRACKENRIDGE PA

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

Report Date : SEP 1962

Pagination or Media Count : 1

Abstract : Full length T shape extrusions of TZM were made within target requirements from 3200-3400F billet heating temperature with a reduction ratio of about 19:1. High liner pressure in excess of 200 ksi at an initial stem speed of 100 in/min was required to accomplish these extrusions. Surface quality was better than 150 RMS on full length extrustions. Few areas of glass or die coating tub-in appeared but could be removed by light conditioning. By careful application of the die coating, followed by grinding and polishing the coated surface to a finish of 100 RMS or better, striations were almost completely eliminated. Good die performance resulting in less than 0.005 in run-out on full length extrusions was achieved with zirconia coate dies. The zirconia was applied by the oxyacetylene flamespray process with solid rod feed. (Author)

Descriptors :   *EXTRUSION, *MOLYBDENUM ALLOYS, COATINGS, DIES, GUIDED MISSILES, HARDNESS, MANUFACTURING, MECHANICAL PROPERTIES, MICROSTRUCTURE, OXIDES, SURFACE PROPERTIES, TITANIUM ALLOYS, ZIRCONIUM ALLOYS, ZIRCONIUM COMPOUNDS

Distribution Statement : APPROVED FOR PUBLIC RELEASE