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Accession Number:
AD0260072
Title:
HIGH ENERGY RATE EXTRUSION
Corporate Author:
WESTINGHOUSE ELECTRIC CORP BLAIRSVILLE PA
Report Date:
1961-07-01
Abstract:
The hardness of the multiple-orifice dies began to decrease when billet temperatures above 900 C were employed. Based on the results obtained from 29 extrusions through the multiple-orifice dies, 3 single bore dies were designed with entry angles of 90, 105, and 120 degrees for experiments on extrusions of long lengths. Grease and graphite lubrication was used for all extrusions, but Al billets were the only ones benefiting from the lubrication. Grease and graphite were effective to a lesser degree with steel billets at 900 C and 500 psi fire pressure, but was considered ineffective at 1100 C and 800 psi fire pressure. Billets of 1-78 in. diam by 2 in. length Al alloy, AISI 1020 steel, AISI 4340 steel, and 6 Al-4V-90Ti alloy were extruded at various temperatures and fire pressures 304 stainless steel billets were 2 to 2 12 in. A method was devised to determine the energy developed by the Dynapak for various combinations of fire pressure, back pressure, and stroke length.
Descriptive Note:
Interim technical progress rept. no. 3, 1 Apr-30 Jun 61 on Phase 2,
Pages:
0001
Contract Number:
AF33 600 41948
File Size:
0.00MB
