【英文标准名称】:StandardTestMethodforWearRateandCoefficientofFrictionofMaterialsinSelf-LubricatedRubbingContactUsingaThrustWasherTestingMachine
【原文标准名称】:止推垫试验机测定无润滑磨擦接触中材料磨损速率和摩擦系数的标准试验方法
【标准号】:ASTMD3702-1994(2009)
【标准状态】:现行
【国别】:美国
【发布日期】:1994
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D02.L0.05
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:coefficientoffriction;self-lubricated;torque;wear;wear-rate;Coefficientoffriction(COF)--petroleumproducts;Equilibrium;Pressuretesting--petroleumproducts;Self-lubricatedmaterials;Thrustwashermachine;Torque--petroleummaterials/applicat
【摘要】:Thistestmethodisusedtodeterminetheequilibriumrateofwearandcoefficientoffrictionofmaterialsinrubbingcontactunderusefuloperatingconditions,thatis,combinationsofpressureandvelocitythatfallbelowthePV(pressurex00D7;velocity)limitofthetestmaterial.Theuserofthistestmethodshoulddeterminetohisownsatisfactionwhethertheresultsofthistestprocedurecorrelatewithfieldperformanceorotherbenchtestmachines.Ifthetestconditionsarechanged,thewearratesmaychangeandtherelativevalueofonematerialwithrespecttoanothermayalsochange.TestconditionsmaybeselectedfromTable1.Theprecisionofwearmeasurementisrelativelyindependentoftestdurationoramountofwear,buttheprecisionofwearrate(calculation)improveswithtestdurationandamountofwear.Itisgenerallybelievedthatusefulwearrateprecisionrequirestheselectionofatestdurationsufficienttoproduce0.1mm(0.004in.)ofwear.Testdurationswilloftenbeinthe50to4000-hrange.TABLE1TestConditionsARotationalspeed,rpmRubbingVelocity,ft/min(m/min)Load,lb(kg),toObtainPV,psix00D7;ft/min(kg/cm2x00D7;m/min)atSelectedSpeedsPV11250(26.8)PV22500(53.6)PV35000(107.1)PV410000(214.3)36
10(3.05)
25.0(11.3)
50.0(22.7)
100(45.4)
200(90.7)
180
50(15.2)
5.0(2.3)
10.0(4.5)
20.0(9.1)
40.0(18.1)
900
250(76.2)
1.0(0.5)
2.0(0.9)
4.0(1.8)
8.0(3.6)