Accession Number:

AD0416642

Title:

LINER FOR EXTRUSION BILLET CONTAINERS

Descriptive Note:

Interim technical documentary progress rept. 4 May-4 Aug 63,

Corporate Author:

IIT RESEARCH INST CHICAGO ILL

Personal Author(s):

Report Date:

1963-08-04

Pagination or Media Count:

18.0

Abstract:

Rokide-process alumina and zirconia coatings and a Udimet 700 superalloy liner were evaluated by extrusion of 3 12-in. billets of Inconel 713C, Udimet 700, S 4340, PH15-7Mo, and TZM alloys, using rod extrusion dies of 121, 161, and 401 ratio, and T-section dies. Billet temperatures were in the 1900 to 2250 F and 2900 to 3600 F ranges. Both alumina and zirconia coatings pro vided adequate protection to the support tooling at temperatures to 3450 F. Alumina coatings showed wear at pmmperatures over 2900 F, but may be serviceable to 3450 F. Zirconia coatings showed erratic results. One coating did with stand extrusion at 3450 F without apparent wear. The Udimet 700 liner did not show wear at 2000 F, but did react with the TZM billet at 3600 F. T-section die design was modified to prevent die cracking during extrusion and reduce coating grinding costs. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE