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Title: Means of determining extrusion temperatures

Abstract

In an extrusion process comprising the steps of fabricating a metal billet, heating said billet for a predetermined time and at a selected temperature to increase its plasticity and then forcing said heated billet through a small orifice to produce a desired extruded object, the improvement comprising the steps of randomly inserting a plurality of small metallic thermal tabs at different cross sectional depths in said billet as a part of said fabricating step, and examining said extruded object at each thermal tab location for determining the crystal structure at each extruded thermal tab thus revealing the maximum temperature reached during extrusion in each respective tab location section of the extruded object, whereby the thermal profile of said extruded object during extrusion may be determined.

Inventors:
 [1];  [2]
  1. Oliver Springs, TN
  2. Oak Ridge, TN
Issue Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
OSTI Identifier:
862955
Patent Number(s):
4056963
Assignee:
United States of America as represented by United States Energy (Washington, DC)
Patent Classifications (CPCs):
B - PERFORMING OPERATIONS B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL B21C - MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
means; determining; extrusion; temperatures; process; comprising; steps; fabricating; metal; billet; heating; predetermined; time; selected; temperature; increase; plasticity; forcing; heated; orifice; produce; desired; extruded; improvement; randomly; inserting; plurality; metallic; thermal; tabs; sectional; depths; step; examining; tab; location; crystal; structure; revealing; maximum; reached; respective; section; whereby; profile; determined; improvement comprising; predetermined time; process comprising; crystal structure; selected temperature; maximum temperature; extrusion process; determined time; /72/374/

Citation Formats

McDonald, Robert E, and Canonico, Domenic A. Means of determining extrusion temperatures. United States: N. p., 1977. Web.
McDonald, Robert E, & Canonico, Domenic A. Means of determining extrusion temperatures. United States.
McDonald, Robert E, and Canonico, Domenic A. Sat . "Means of determining extrusion temperatures". United States. https://www.osti.gov/servlets/purl/862955.
@article{osti_862955,
title = {Means of determining extrusion temperatures},
author = {McDonald, Robert E and Canonico, Domenic A},
abstractNote = {In an extrusion process comprising the steps of fabricating a metal billet, heating said billet for a predetermined time and at a selected temperature to increase its plasticity and then forcing said heated billet through a small orifice to produce a desired extruded object, the improvement comprising the steps of randomly inserting a plurality of small metallic thermal tabs at different cross sectional depths in said billet as a part of said fabricating step, and examining said extruded object at each thermal tab location for determining the crystal structure at each extruded thermal tab thus revealing the maximum temperature reached during extrusion in each respective tab location section of the extruded object, whereby the thermal profile of said extruded object during extrusion may be determined.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1977},
month = {1}
}

Patent:

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