Arc voltage distribution skewness as an indicator of electrode gap during vacuum arc remelting

Williamson, Rodney L; Zanner, Frank J; Grose, Stephen M

Advanced Search OptionsAdvanced Search queries use a traditional Term Search. For more info, see our FAQ.

All Fields:

Patent Title:

Abstract:

Assignee:

Inventor(s):

Patent Number:

Patent Classification (CPC):

All Classifications
A - human necessities
A01 - agriculture
A21 - baking
A22 - butchering
A23 - foods or foodstuffs
A24 - tobacco
A41 - wearing apparel
A42 - headwear
A43 - footwear
A44 - haberdashery
A45 - hand or travelling articles
A46 - brushware
A47 - furniture
A61 - medical or veterinary science
A62 - life-saving
A63 - sports
A99 - subject matter not otherwise provided for in this section
B - performing operations
B01 - physical or chemical processes or apparatus in general
B02 - crushing, pulverising, or disintegrating
B03 - separation of solid materials using liquids or using pneumatic tables or jigs
B04 - centrifugal apparatus or machines for carrying-out physical or chemical processes
B05 - spraying or atomising in general
B06 - generating or transmitting mechanical vibrations in general
B07 - separating solids from solids
B08 - cleaning
B09 - disposal of solid waste
B21 - mechanical metal-working without essentially removing material
B22 - casting
B23 - machine tools
B24 - grinding
B25 - hand tools
B26 - hand cutting tools
B27 - working or preserving wood or similar material
B28 - working cement, clay, or stone
B29 - working of plastics
B30 - presses
B31 - making articles of paper, cardboard or material worked in a manner analogous to paper
B32 - layered products
B33 - additive manufacturing technology
B41 - printing
B42 - bookbinding
B43 - writing or drawing implements
B44 - decorative arts
B60 - vehicles in general
B61 - railways
B62 - land vehicles for travelling otherwise than on rails
B63 - ships or other waterborne vessels
B64 - aircraft
B65 - conveying
B66 - hoisting
B67 - opening, closing {or cleaning} bottles, jars or similar containers
B68 - saddlery
B81 - microstructural technology
B82 - nanotechnology
B99 - subject matter not otherwise provided for in this section
C - chemistry
C01 - inorganic chemistry
C02 - treatment of water, waste water, sewage, or sludge
C03 - glass
C04 - cements
C05 - fertilisers
C06 - explosives
C07 - organic chemistry
C08 - organic macromolecular compounds
C09 - dyes
C10 - petroleum, gas or coke industries
C11 - animal or vegetable oils, fats, fatty substances or waxes
C12 - biochemistry
C13 - sugar industry
C14 - skins
C21 - metallurgy of iron
C22 - metallurgy
C23 - coating metallic material
C25 - electrolytic or electrophoretic processes
C30 - crystal growth
C40 - combinatorial technology
C99 - subject matter not otherwise provided for in this section
D - textiles
D01 - natural or man-made threads or fibres
D02 - yarns
D03 - weaving
D04 - braiding
D05 - sewing
D06 - treatment of textiles or the like
D07 - ropes
D10 - indexing scheme associated with sublasses of section d, relating to textiles
D21 - paper-making
D99 - subject matter not otherwise provided for in this section
E - fixed constructions
E01 - construction of roads, railways, or bridges
E02 - hydraulic engineering
E03 - water supply
E04 - building
E05 - locks
E06 - doors, windows, shutters, or roller blinds in general
E21 - earth drilling
E99 - subject matter not otherwise provided for in this section
F - mechanical engineering
F01 - machines or engines in general
F02 - combustion engines
F03 - machines or engines for liquids
F04 - positive - displacement machines for liquids
F05 - indexing schemes relating to engines or pumps in various subclasses of classes f01-f04
F15 - fluid-pressure actuators
F16 - engineering elements and units
F17 - storing or distributing gases or liquids
F21 - lighting
F22 - steam generation
F23 - combustion apparatus
F24 - heating
F25 - refrigeration or cooling
F26 - drying
F27 - furnaces
F28 - heat exchange in general
F41 - weapons
F42 - ammunition
F99 - subject matter not otherwise provided for in this section
G - physics
G01 - measuring
G02 - optics
G03 - photography
G04 - horology
G05 - controlling
G06 - computing
G07 - checking-devices
G08 - signalling
G09 - education
G10 - musical instruments
G11 - information storage
G12 - instrument details
G16 - information and communication technology [ict] specially adapted for specific application fields
G21 - nuclear physics
G99 - subject matter not otherwise provided for in this section
H - electricity
H01 - basic electric elements
H02 - generation
H03 - basic electronic circuitry
H04 - electric communication technique
H05 - electric techniques not otherwise provided for
H99 - subject matter not otherwise provided for in this section
Y - new / cross sectional technologies
Y02 - technologies or applications for mitigation or adaptation against climate change
Y04 - information or communication technologies having an impact on other technology areas
Y10 - technical subjects covered by former uspc

More Options ...

Title: Arc voltage distribution skewness as an indicator of electrode gap during vacuum arc remelting

Full Record
Other Related Research

Abstract

The electrode gap of a VAR is monitored by determining the skewness of a distribution of gap voltage measurements. A decrease in skewness indicates an increase in gap and may be used to control the gap.

Inventors:

Williamson, Rodney L ^[1]; Zanner, Frank J ^[2]; Grose, Stephen M ^[3]

Albuquerque, NM
Sandia Park, NM
Glenwood, WV

Issue Date:: Thu Jan 01 00:00:00 EST 1998

Research Org.:: AT&T

OSTI Identifier:: 871329

Patent Number(s):: 5708677

Assignee:: Sandia Corporation (Albuquerque, NM)

Patent Classifications (CPCs):: F - MECHANICAL ENGINEERING F27 - FURNACES F27B - FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL

F - MECHANICAL ENGINEERING F27 - FURNACES F27D - DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE

Show more

F - MECHANICAL ENGINEERING F27 - FURNACES F27B - FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL
F27B3/28 - Arrangement of controlling, monitoring, alarm or the like devices

F - MECHANICAL ENGINEERING F27 - FURNACES F27D - DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
F27D11/08 - Heating by electric discharge, e.g. arc discharge

H - ELECTRICITY H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR H05B - ELECTRIC HEATING
H05B7/152 - by electromechanical means for positioning of electrodes

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02P - CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
Y02P10/25 - by increasing the energy efficiency of the process

Show less

DOE Contract Number:: AC04-76DP00789

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: voltage; distribution; skewness; indicator; electrode; gap; vacuum; remelting; var; monitored; determining; measurements; decrease; indicates; increase; control; voltage measurement; electrode gap; voltage measurements; /373/

Citation Formats


                    Williamson, Rodney L, Zanner, Frank J, and Grose, Stephen M. Arc voltage distribution skewness as an indicator of electrode gap during vacuum arc remelting.  United States: N. p., 1998. 
        Web.

Copy to clipboard


                    Williamson, Rodney L, Zanner, Frank J, & Grose, Stephen M. Arc voltage distribution skewness as an indicator of electrode gap during vacuum arc remelting.  United States.

Copy to clipboard


                    Williamson, Rodney L, Zanner, Frank J, and Grose, Stephen M. Thu .  
        "Arc voltage distribution skewness as an indicator of electrode gap during vacuum arc remelting".  United States.  https://www.osti.gov/servlets/purl/871329.

Copy to clipboard


                    
@article{osti_871329,

  title        = {Arc voltage distribution skewness as an indicator of electrode gap during vacuum arc remelting},

  author       = {Williamson, Rodney L and Zanner, Frank J and Grose, Stephen M},

  abstractNote = {The electrode gap of a VAR is monitored by determining the skewness of a distribution of gap voltage measurements. A decrease in skewness indicates an increase in gap and may be used to control the gap.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Thu Jan 01 00:00:00 EST 1998},

  month        = {Thu Jan 01 00:00:00 EST 1998}

}

Copy to clipboard

Patent:

Save / Share:

Export Metadata

Save to My Library

Similar Records in DOE Patents and OSTI.GOV collections:

Arc voltage distribution skewness as an indicator of electrode gap during vacuum arc remelting

Patent Williamson, R L; Zanner, F J; Grose, S M

The electrode gap of a VAR is monitored by determining the skewness of a distribution of gap voltage measurements. A decrease in skewness indicates an increase in gap and may be used to control the gap. 4 figs.
Controlling electrode gap during vacuum arc remelting at low melting current

Patent Williamson, Rodney L [Albuquerque, NM]; Zanner, Frank J [Sandia Park, NM]; Grose, Stephen M [Glenwood, WV]

An apparatus and method for controlling electrode gap in a vacuum arc remelting furnace, particularly at low melting currents. Spectrographic analysis is performed of the metal vapor plasma, from which estimates of electrode gap are derived.
Full Text Available
Arc voltage distribution properties as a function of melting current, electrode gap, and CO pressure during vacuum arc remelting

Journal Article Williamson, R L; Zanner, F J [Sandia National Labs., Albuquerque, NM (United States). Materials Processing Dept.]; Grose, S M [INCO Alloys International, Inc., Huntington, WV (United States)] - Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science

An industrial vacuum arc remelting experiment was carried out at Cytemp Specialty Steel Corp. (Titusville, PA) during which a 0.432-m-diameter Alloy 718 electrode was remelted into a 0.508-m-diameter ingot. The purpose of the experiment was to investigate the response of the arc voltage distribution properties (mean, standard deviation, and skewness) and the drip-short frequency to melting current, electrode gap, and CO pressure. The responses were characterized by recording and analyzing changes in the temporally averaged properties. Each independent variable was systematically varied in accordance with a modified Yates order factor space experimental design within the following ranges: melting current, 5,000more » « less
DOI: https://doi.org/10.1007/s11663-997-0012-8
Apparatus to control the total energy flux into the top ingot surface during vacuum arc remelting processes

Patent Williamson, Rodney L.; Melgaard, David K.; Beaman, Joseph J.

A Vacuum Arc Remelting controller apparatus wherein process control is accomplished primarily through control of pool power. Pool power being defined as the total energy flux into a top ingot surface of the VAR ingot. The controller apparatus of the present invention comprises a controller computer that transmits commands to the host furnace through an ethernet connection.
Full Text Available
Controlling electrode gap during vacuum arc remelting at low melting current

Patent Williamson, R L; Zanner, F J; Grose, S M

An apparatus and method are disclosed for controlling electrode gap in a vacuum arc remelting furnace, particularly at low melting currents. Spectrographic analysis is performed of the metal vapor plasma, from which estimates of electrode gap are derived. 5 figs.

Similar Records