ASTM_D_7043_-_21.pdf

Designation:D704321Standard Test Method forIndicating Wear Characteristics of Non-Petroleum andPetroleum Hydraulic Fluids in a Constant Volume VanePump1This standard is issued under the fixed designation D7043;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.Scope*1.1 This test method covers a constant volume vane pumptest procedure operated at 1200 r min and 13.8 MPa.1.2 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.2.1 ExceptionThere are no SI equivalents for the inchfasteners and inch O-rings that are used in the apparatus in thistest method.1.2.2 ExceptionIn some cases English pressure values aregiven in parentheses as a safety measure.1.3 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 prior to use.1.4 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 TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D2882 Test Method for Indicating Wear Characteristics ofPetroleum and Non-Petroleum Hydraulic Fluids in Con-stant Volume Vane Pump(Withdrawn 2003)3D4175 Terminology Relating to Petroleum Products,LiquidFuels,and LubricantsD6300 Practice for Determination of Precision and BiasData for Use in Test Methods for Petroleum Products,Liquid Fuels,and LubricantsE177 Practice for Use of the Terms Precision and Bias inASTM Test MethodsE691 Practice for Conducting an Interlaboratory Study toDetermine the Precision of a Test Method3.Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 flushing,vprocess of cleaning the test system beforetesting to prevent cross-contamination.3.1.2 snubber,nfluid restricting device used to dampenpressure pulsations.3.1.3 torquing,vprocess of tightening the pump head boltsto achieve a uniform clamping force.4.Summary of Test Method4.1 An amount of 18.9 L 6 0.5 L of a hydraulic fluid arecirculated through a rotary vane pump system for 100 h at apump speed of 1200 r min 6 60 r min and a pump outletpressure of 13.8 MPa 6 0.3 MPa(2000 psi 6 40 psi).Fluidtemperature at the pump inlet is 66 C 6 3 C for all waterglycols,emulsions,and other water containing fluids and forpetroleum and synthetic fluids of ISO Grade 46 or lowerviscosity.A temperature of 80 C 6 3 C is used for all othersynthetic and petroleum fluids.4.2 The result obtained is the total mass loss from the camring and the twelve vanes during the test.Other reported valuesare initial flow rate and final flow rate.4.3 The total quantity of test fluid required for a run is26.5 L.5.Significance and Use5.1 This test method is an indicator of the wear character-istics of non-petroleum and petroleum hydraulic fluids operat-ing in a constant volume vane pump.Excessive wear in vanepumps could lead to malfunction of hydraulic systems incritical applications.1This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products,Liquid Fuels,and Lubricants and is the direct responsibility ofSubcommittee D02.N0 on Hydraulic Fluids.Current edition approved Dec.1,2021.Published December 2021.Originallyapproved in 2004.Last previous edition approved in 2017 as D7043 17.DOI:10.1520/D7043-21.2For 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.3The last approved version of this historical standard is referenced onwww.astm.org.*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 with 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.1?6.Apparatus6.1 The basic system consists of the following(see Fig.1):6.1.1 AC Motor,1200 r min,or other suitable drive,with11 kW(15 hp)as suggested minimum power requirement(Item 5,Fig.1).The motor must have right hand rotation(counterclockwise rotation as viewed from the shaft end).6.1.1.1 When constructing the test stand some users buildthe test s