To prevent distortion of extruded metal, a guidance assembly is aligned with the die. As the metal emerges from the extrusion dies, it passes directly into the receiver and straightening tube system, and the completed extrusion is withdrawn

Gyorgak, C. A.

Hoover, R. J.

English

NASA Technical Reports Server

November 1964
	
Brief 64-10014 
NASA TECH BRIEF
	
-im 
This NASA Tech Brief is issued by the Technology Utilization Division to acquaint 
industry with the technical content of an innovation derived from the space program. 
Guide for Extrusion Dies Eliminates Straightening Operation 
.
Steel Receiver Steel Receiver	 Zirconium Oxide Coating 
Split	 B Insert it	 Bolster 
B lo^k
Bolster Block 
Block 
Standard Pipe
T
Graphite Liner Graphite Liner 
oupling
Standard Pipe Standard Pipe 
ta Coupling Coupling 
Standard Standard 
Steel Pipe Steel Pipe 
Graphite Liner 
Standard Standard Standard	 Graphite Liner 
Steel Steel Pipe., Steel Pipe­ 1_—
TYPE 1 TYPE 2 TYPE 3
The problem: Preventing bending and distortion 
of metal rods and other shapes extruded from dies. 
Lubrication breakdown and nonuniform flow of the 
metal being extruded through a die may result in 
misshapen extrusions, which require subsequent 
straightening. The straightening operation entails 
additional time and expense and does not generally 
produce satisfactory results on extrusions of refractory 
metals. 
The solution: A guide assembly that is aligned with 
the die to prevent distortion of the extrusion. 
How it's done: The guide assembly consists of a 
receiver, a straightening tube, and a modified split 
bolster block. In operation, the assembly is aligned 
with the die so that an extrusion coming out of the 
die will pass directly into the receiver and straighten-
ing tube. When the metal is completely extruded from 
the die, the bolster block is separated, allowing the 
receiver and straightening tube to drop into a canister,
beneath the extrusion press. The unit is removed and 
the completed extrusion is withdrawn. Three types of 
guide assemblies are shown in the illustration. 
Note: 
Inquiries concerning this invention may be directed 
to:
Technology Utilization Officer 
Lewis Research Center 
21000 Brookpark Road 
Cleveland, Ohio, 44135 
Reference: B64-10014 
Patent status: NASA encourages the immediate 
commercial use of this invention. Inquiries about 
obtaining rights for its commercial use may be made 
to NASA Headquarters, Washington, D.C., 20546. 
Source: Robert J. Hoover and Charles A. Gyorgak
(Lewis- I 52)

Category No. 05 
This document was prepared under the sponsorship of the National 	 this document, or that the use of any information, apparatus, method, 
Aeronautics and Space Administration. Neither the United States Govern-	 or process disclosed in this document may not infringe privately-owned 
ment, nor NASA, nor any person acting on behalf of NASA: A. Makes
	 rights; or B. Assumes any liabilities with respect to the use of, or for 
any warranty or representation, express or implied, with respect to the
	 damages resulting from the use of, any information, apparatus, method, 
accuracy, completeness, or usefulness of the information contained in
	
or process disclosed in this document. 
https://ntrs.nasa.gov/search.jsp?R=19640000008 2020-03-11T17:06:58+00:00Z


Guide for extrusion dies eliminates straightening operation

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