1、Designation:D648221Standard Test Method forDetermination of Cooling Characteristics of AqueousPolymer Quenchants by Cooling Curve Analysis withAgitation(Tensi Method)1This standard is issued under the fixed designation D6482;the number immediately following the designation indicates the year oforigi
2、nal 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.Scope*1.1 This test method covers the equipment and the proce-dure for evaluatio
3、n of quenching characteristics of a quenchingfluid by cooling rate determination.1.2 This test method is designed to evaluate quenchingfluids with agitation,using the Tensi agitation apparatus.1.3 The values stated in SI units are to be regarded asstandard.The values given in parentheses are for inf
4、ormationonly.1.4 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,health,and environmental practices and deter-mine the applicability of regulatory limitations prio
5、r to use.1.5 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBar
6、riers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D4175 Terminology Relating to Petroleum Products,LiquidFuels,and LubricantsD6200 Test Method for Determination of Cooling Charac-teristics of Quench Oils by Cooling Curve AnalysisE220 Test Method for Calibration of Thermocouples
7、ByComparison TechniquesE230 Specification for Temperature-Electromotive Force(emf)Tables for Standardized Thermocouples2.2 SAE Standard:3AMS 5665 Nickel Alloy Corrosion and Heat Resistant Bars,Forgings and Rings2.3 Japanese Industrial Standards:4JIS K 2242 Heat Treating OilJIS K 6753 Di-2-ethylhexyl
8、 Phthalate2.4 Wolfson Engineering Group:5Wolfson Engineering Group Specification Laboratory Testsfor Assessing the Cooling Curve of Industrial QuenchingMedia2.5 ASTM Adjuncts:6ADJD6300D2PP,Determination of Precision and BiasData for Use in Test Methods for Petroleum Products3.Terminology3.1 Definiti
9、ons of Terms Specific to This Standard:3.1.1 For definitions of terms used in this test method,referto Terminology D4175.3.1.2 aqueous polymer quenchant,nan aqueous solutioncontaining a water soluble polymer;typically including poly-(alkylene glycol),poly(ethyl oxazoline),poly(solium acrylate)and po
10、ly(vinyl pyrrolidone)(1,2).7The quenchant solutionalso typically contains additives for corrosion and foamcontrol,if needed.Quench severity of aqueous polymer quen-chants is dependent on concentration and molecular weight ofthe specific polymer being evaluated,quenchant temperature,and agitation rat
11、e as shown in Figs.1-3,respectively.3.1.3 cooling curve,na graphical representation of thecooling time(t)-temperature(T)response of the probe(see7.3).An example is illustrated in Fig.4A.1This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products,Liquid Fuels,and Lubricants
12、 and is the direct responsibility ofSubcommittee D02.L0.06 on Non-Lubricating Process Fluids.Current edition approved Dec.1,2021.Published January 2022.Originallyapproved in 1999.Last previous edition approved in 2016 as D6482 06(2016).DOI:10.1520/D6482-21.2For referenced ASTM standards,visit the AS
13、TM 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 SAE International(SAE),400 Commonwealth Dr.,Warrendale,PA 15096-0001,http:/www.sae.org.4Avail
14、able from Japanese Standards Organization(JSA),4-1-24 AkasakaMinato-Ku,Tokyo,107-8440,Japan,http:/www.jsa.or.jp.5Wolfson Heat Treatment Centre,Federation House,Vyse St.,Birmingham,B186LT,UK,http:/www.sea.org.uk/whtc.6No longer available from ASTM International Headquarters.7The boldface numbers in p
15、arentheses refer to the list of references at the end ofthis standard.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance w
16、ith internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.13.1.4 cooling curve analysis,nthe process of quantifyingthe cooling characteristics of a quenchant based on the tem-perature versus time profile obtained by cooling a preheatedmetal probe assembly(see Fig.5)under standard conditions(1,3,4).3.
