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Title: Method for heat-treating metal materials

Abstract

A method for heat treating metal materials by passing electrical current through a metallic workpiece to heat the workpiece via Joule heating to a preselected temperature for a preselected period of time, based upon the formula I2×R×t, wherein I is current, R is resistance and t is time. The current may be a direct or an alternating one. Various configurations of the method are envisioned wherein multiple current inputs and outputs are attached to the metal material so as to selectively heat specific portions of the piece including irregular shapes and differing diameters.

Inventors:
;
Issue Date:
Research Org.:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1824051
Patent Number(s):
11028470
Application Number:
15/796,357
Assignee:
Battelle Memorial Institute (Richland, WA)
Patent Classifications (CPCs):
C - CHEMISTRY C22 - METALLURGY C22F - CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Patent
Resource Relation:
Patent File Date: 10/27/2017
Country of Publication:
United States
Language:
English

Citation Formats

Rohatgi, Aashish, and Jana, Saumyadeep. Method for heat-treating metal materials. United States: N. p., 2021. Web.
Rohatgi, Aashish, & Jana, Saumyadeep. Method for heat-treating metal materials. United States.
Rohatgi, Aashish, and Jana, Saumyadeep. Tue . "Method for heat-treating metal materials". United States. https://www.osti.gov/servlets/purl/1824051.
@article{osti_1824051,
title = {Method for heat-treating metal materials},
author = {Rohatgi, Aashish and Jana, Saumyadeep},
abstractNote = {A method for heat treating metal materials by passing electrical current through a metallic workpiece to heat the workpiece via Joule heating to a preselected temperature for a preselected period of time, based upon the formula I2×R×t, wherein I is current, R is resistance and t is time. The current may be a direct or an alternating one. Various configurations of the method are envisioned wherein multiple current inputs and outputs are attached to the metal material so as to selectively heat specific portions of the piece including irregular shapes and differing diameters.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jun 08 00:00:00 EDT 2021},
month = {Tue Jun 08 00:00:00 EDT 2021}
}

Works referenced in this record:

High-Speed Hot Forming and Direct Quenching
patent-application, January 2013


Localized Induction Heating for Residual Stress Optimization
patent-application, July 2009


Heat Treatment for Vehicle Seat Structures and Components
patent-application, July 2015


Thermal-assisted roll forming of high strength material
patent, October 2017


Metal Forming Apparatus and Process with Resistance Heating
patent-application, December 2008


Method for Producing Stabilizer and Heating Device
patent-application, June 2015