1、Designation:D752822Standard Test Method forBench Oxidation of Engine Oils by ROBO Apparatus1This standard is issued under the fixed designation D7528;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number
2、in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.INTRODUCTIONThis test method is written for use by laboratories that make use of ASTM Test Monitoring Center(TMC)2services(see Annex A1 Annex A4).The TMC pro
3、vides reference oils,and engineering and statistical services to laboratories that desireto produce test results that are statistically similar to those produced by laboratories previouslycalibrated by the TMC.In general,the Test Purchaser decides if a calibrated test stand is to be used.Organizatio
4、ns such astheAmerican Chemistry Council require that a laboratory utilize the TMC services as part of their testregistration process.In addition,the American Petroleum Institute and the Gear Lubricant ReviewCommittee of the Lubricant Review Institute(SAE International)require that a laboratory use t
5、heTMC services in seeking qualification of oils against their specifications.The advantage of using the TMC services to calibrate test stands is that the test laboratory(andhence the Test Purchaser)has an assurance that the test stand was operating at the proper level of testseverity.It should also
6、be borne in mind that results obtained in a non-calibrated test stand may notbe the same as those obtained in a test stand participating in the ASTM TMC services process.1.Scope*1.1 This test method describes a bench procedure to simu-late the oil aging encountered in Test Method D7320,theSequence I
7、IIG engine test method.These aged oils are thentested for kinematic viscosity and for low-temperature pump-ability properties as described in the Sequence IIIGA enginetest,Appendix X1 of Test Method D7320.1.2 UnitsThe values stated in SI units are to be regardedas standard.No other units of measurem
8、ent are included in thisstandard.1.2.1 ExceptionsThere are no SI equivalents for someapparatus in Section 6,and there are some figures where inchunits are to be regarded as standard.1.3 This test method is arranged as follows:SectionScope1Reference Documents2Terminology3Summary of Test Method4Signif
9、icance and Use5Apparatus6Reagents and Materials7Hazards8New and Existing Test Stand Calibration9Procedure10Cleaning11Calculations and Determination of Test Results12Report13Precision and Bias14Keywords15AnnexesASTM Test Monitoring Center:OrganizationAnnex A1ASTM Test Monitoring Center:Calibration Pr
10、oceduresAnnex A2ASTM Test Monitoring Center:Maintenance ActivitiesAnnex A3ASTM Test Monitoring Center:Related InformationAnnex A4Reaction VesselAnnex A5Reaction Vessel HeadAnnex A6Reaction Vessel-to-Head SealAnnex A7Agitator Turbine BladeAnnex A8Agitator Packing GlandAnnex A9Nitrogen Dioxide Graduat
11、ed TubeAnnex A10Vacuum System PlumbingAnnex A11Vacuum Trap CondensersAnnex A12Setting the Vacuum Control ValveAnnex A13Appendixes1This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products,Liquid Fuels,and Lubricants and is the direct responsibility ofSubcommittee D02.B0.0
12、7 on Development and Surveillance of Bench TestsMethods.Current edition approved April 1,2022.Published April 2022.Originallyapproved in 2009.Last previous edition approved in 2021 as D7528 21.DOI:10.1520/D7528-22.2Until the next revision of this test method,the ASTM Test Monitoring Centerwill updat
13、e changes in the test method by means of information letters.Informationletters may be obtained from the ASTM Test Monitoring Center,203 ArmstrongDrive,Freeport,PA 16229,www.astmtmc.org.Attention:Director.This editionincorporates revisions in all information letters through No.21-1.*A Summary of Cha
14、nges 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 with internationally recognized principles on standardization established in the Decisio
15、n on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1SectionSample Preparation and AdditionAppendix X1Charging the Liquid Nitrogen DioxideAppendix X2Nitrogen Dioxide Precision Needle
16、 ValveAppendix X3Example of an Assembled ROBO ApparatusAppendix X4Information Package to Aid Setting Up a New Robo ApparatusAppendix X5Dilute Nitrogen Dioxide in Air Option InformationAppendix X6Time-Averaged Subsurface Air Flow RateAppendix X71.4 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
