HIGH ENERGY RATE EXTRUSION PROGRAM
Abstract
A series of high-velocity extrusions were made which demonstrated the reproducibility of this process for making Tee shapes 2 inches by 1 inch by .050 inches from Ti-6Al-4V, AISI 4340 and 304 stainless steel. Nominal surface finish of eleven extrusions was 80 RMS. Thickness variation on the stem and flanges was normally .002 inches to .003 inches. Radii at the intersection of the stem and flange were under .03 inches. The extrusions were made on a Dynapak high velocity extrusion press manufactured by General Dynamics. All the materials were extruded through ceramic coated dies at a reduction ratio of 17:1. The dies were lubricated with graphite and no billet lubrication was used. Lengths obtained varied from 8 feet to 11 feet depending on the power used. The Dynapak machine is capable of producing energies of approximately 300,000 foot pounds.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 31, 1963
- Accession Number
- AD0406125
Entities
People
- J. M. Rippel
Organizations
- Westinghouse Electric Corporation