ASTM_D_6973_-_14.pdf

Designation:D697314Standard Test Method forIndicating Wear Characteristics of Petroleum HydraulicFluids in a High Pressure Constant Volume Vane Pump1This standard is issued under the fixed designation D6973;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 high-pressure vane pump test procedure for indicating the wearcharacteristics of petroleum hydraulic fluids.See AnnexA1 forrecommended testing conditions for water-based syntheticfluids.1.2 The values stated in SI units are to be regarded as thestandard.The values given in parentheses are for informationonly.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 and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2E691 Practice for Conducting an Interlaboratory Study toDetermine the Precision of a Test Method2.2 ISO Standards:3ISO 4021 Hydraulic Fluid PowerParticulate Contamina-tion AnalysisExtraction of Fluid Samples from Lines ofan Operating SystemISO 4406 Hydraulic Fluid PowerFluidsMethod forCoding the Level of Contamination by Solids ParticlesISO 7745 Hydraulic Fluid PowerFire-Resistant(FR)FluidsGuidelines for UseISO 11171 Hydraulic Fluid PowerCalibration of Auto-matic Particle Counters for LiquidsISO 11500 Hydraulic Fluid PowerDetermination of Par-ticulate Contamination by Automatic Counting Using theLight Extinction Principle2.3 Other Documents:SAE 100R1320 Hydraulic Hose Specification4ANSI/(NFPA)T2.13.1 R3-1998 Recommended PracticeHydraulic Fluid PowerUse of Fire-Resistant Fluids inIndustrial Systems53.Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 flushing,vthe process of cleaning the test systembefore testing to prevent cross-contamination.4.Summary of Test Method4.1 Hydraulic fluid in the amount of 190 L 6 4 L(50 gal 61 gal)is circulated through a rotary vane pump system for 50 hat a pump speed of 2400 r min 6 20 r/min and a pump outletpressure of 20.7 MPa 6 0.2 MPa(3000 psig 6 20 psig).Fluidtemperature at the pump inlet is 95 C 6 3 C(203 F 6 5 F).An ISO Grade 32 or 10W viscosity is required.4.2 The mass of the cam ring and all ten vanes should beindividually determined before and after the test.The mass lossof the cam ring should be reported with the combined mass lossof all ten vanes.The intra-vanes(inserts)are not part of therequired mass loss measurements and should be separatelymeasured if desired.Other reported values are fluid cleanlinessbefore and after the test,initial flow rate,and final flow rate.4.3 Prior to installing the hydraulic test fluid into the rig,astand flush is required to remove any contaminants.A mini-mum quantity of 190 L 6 4 L(50 gal 6 1 gal)of fluid(seeNote 1)made of the same chemical formulation as the testfluid,is required for the stand flush.Therefore the total quantityof oil required for the test is 380 L(100 gal).5.Significance and Use5.1 This test method is an indicator of the wear character-istics of petroleum hydraulic fluids operating in a constant1This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products,Liquid Fuels,and Lubricants and is the direct responsibility ofSubcommittee D02.N0.07 on Lubricating Properties.Current edition approved July 1,2014.Published August 2014.Originallyapproved in 2003.Last previous edition approved in 2008 as D6973 081.DOI:10.1520/D6973-14.2For 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 10036.4Available from Society of Automotive Engineers(SAE),400 CommonwealthDr.,Warrendale,PA 15096-0001.5Available from American National Standards Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036.*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 States1 volume vane pump.Excessive wear in vane pumps could leadto malfunction of hydraulic systems in critical industrial ormobile hydraulic applications.6.Apparatus6.1 The basic system consists of the following(see Fig.1):6.1.1 Electric Motor,or other suitable drive,capable of arotational speed of 2400 r/min with 93 kW(125 hp)assuggested minimum power requirement(see Fig.1,Item 5).6.1.2 Test Stand Base,with appropriate,rigid mounting forthe motor,pump,reservoir,and other components.6.1.3 Rotary Intra