ASTM_D_6710_-_02_2012.pdf

Designation:D671002(Reapproved 2012)Standard Guide forEvaluation of Hydrocarbon-Based Quench Oil1This standard is issued under the fixed designation D6710;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This guide covers information without specific limits,for selecting standard test methods for testing hydrocarbon-based quench oils for quality and aging.1.2 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to its use.2.Referenced Documents2.1 ASTM Standards:2D91 Test Method for Precipitation Number of LubricatingOilsD92 Test Method for Flash and Fire Points by ClevelandOpen Cup TesterD94 Test Methods for Saponification Number of PetroleumProductsD95 Test Method for Water in Petroleum Products andBituminous Materials by DistillationD189 Test Method for Conradson Carbon Residue of Petro-leum ProductsD445 Test Method for Kinematic Viscosity of Transparentand Opaque Liquids(and Calculation of Dynamic Viscos-ity)D482 Test Method for Ash from Petroleum ProductsD524 Test Method for Ramsbottom Carbon Residue ofPetroleum ProductsD664 Test Method for Acid Number of Petroleum Productsby Potentiometric TitrationD974 Test Method for Acid and Base Number by Color-Indicator TitrationD1298 Test Method for Density,Relative Density,or APIGravity of Crude Petroleum and Liquid Petroleum Prod-ucts by Hydrometer MethodD4052 Test Method for Density,Relative Density,and APIGravity of Liquids by Digital Density MeterD4530 Test Method for Determination of Carbon Residue(Micro Method)D6200 Test Method for Determination of Cooling Charac-teristics of Quench Oils by Cooling Curve AnalysisD6304 Test Method for Determination of Water in Petro-leum Products,Lubricating Oils,and Additives by Cou-lometric Karl Fischer Titration2.2 ISO Standards:3ISO 9950 Industrial Quenching OilsDetermination ofCoolingCharacteristicsNickel-AlloyProbeTestMethod,1995-95-013.Terminology3.1 Definitions of Terms Specific to This Standard:Quench Processing3.1.1 austenitization,nheating a steel containing less thanthe eutectoid concentration of carbon(about 0.8 mass%)to atemperature just above the eutectoid temperature to decomposethe pearlite microstructure to produce a face-centered cubic(fcc)austenite-ferrite mixture.3.1.2 dragout,nsolution carried out of a bath on the metalbeing quenched and associated handling equipment.3.1.3 martempering,ncooling steel from the austenitiza-tion temperature to a temperature just above the start ofmertensite transformation(Ms)for a time sufficient for thetemperature to equalize between the surface and the center ofthe steel,at which point the steel is removed from the quenchbath and air cooled as shown in Fig.1.(1)43.1.4 protective atmosphere,nany atmosphere that willinhibit oxidation of the metal surface during austenitization,orit may be used to protect the quenching oil,which may be aninert gas such as nitrogen or argon or a gas used for a heattreating furnace.3.1.5 quench media,nany medium,either liquid(water,oil,molten salt,or lead,aqueous solutions of water-soluble1This guide is under the jurisdiction of ASTM Committee D02 on PetroleumProducts,Liquid Fuels,and Lubricants and is the direct responsibility of Subcom-mittee D02.L0.06 on Non-Lubricating Process Fluids.Current edition approved April 15,2012.Published May 2012.Originallyapproved in 2001.Last previous edition approved in 2007 as D671002(2007).DOI:10.1520/D6710-02R12.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Available from American National Standards Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036,http:/www.ansi.org.4The boldface numbers in parentheses refer to the list of references at the end ofthis standard.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 polymers or salt-brines)or gas or combinations of liquid andgas(air at atmospheric pressure,or pressurized nitrogen,helium,hydrogen)such as air-water spray,used to facilitate thecooling of metal in such a way as to achieve the desiredphysical properties or microstructure.3.1.6 quench severity,nthe ability of a quenching oil toextract heat from a hot metal traditionally defined by thequenching speed(cooling rate)at 1300F(705C)which wasrelated to a Grossmann H-Value or Quench Severity Factor(H-Factor).(2)3.1.7 quenching,ncooling process from a suitable el-evated temperature used to f