HB 7344.22-1996 数控机床用夹具件 大型定位轴
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来源:标准资料网
基本信息
标准名称: | 数控机床用夹具件 大型定位轴 |
中标分类: |
航空、航天 >>
航空器与航天器制造用设备 >>
夹具 |
发布日期: | 1996-09-13 |
实施日期: | 1997-01-01 |
首发日期: | 1900-01-01 |
作废日期: | 1900-01-01 |
出版日期: | 1900-01-01 |
页数: | 1页 |
适用范围
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前言
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目录
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引用标准
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所属分类: 航空 航天 航空器与航天器制造用设备 夹具
【英文标准名称】:StandardTestMethodforDeterminationofYieldStressandApparentViscosityofUsedEngineOilsatLowTemperature
【原文标准名称】:低温下废机油的屈服应力和表观粘度测定的标准试验方法
【标准号】:ASTMD6896-2003(2007)
【标准状态】:现行
【国别】:美国
【发布日期】:2003
【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】:D02.07
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:lowtemperatureflowproperties;lowtemperatureviscosity;mini-rotaryviscometer;pumpingviscosity;useddieselengineoil;viscosity;yieldstress;Apparentviscosity;Low-temperaturetesting;Mini-rotaryviscometer;Pumpingviscosity;Usedeng
【摘要】:Whenanengineoiliscooled,therateanddurationofcoolingcanaffectitsyieldstressandviscosity.Inthislaboratorytest,usedengineoilisslowlycooledthroughatemperaturerangewherewaxcrystallizationisknowntooccur,followedbyrelativelyrapidcoolingtothefinaltesttemperature.AsinotherlowtemperaturerheologicaltestssuchasTestMethodsD3829,D4684,andD5133,apreheatingconditionisrequiredtoensurethatallresidualwaxesaresolubilizedintheoilpriortothecooldown(thatis,removethermalmemory).However,itisalsoknownthathighlysooteduseddieselengineoilscanexperienceasootagglomerizationphenomenonwhenheatedunderquiescentconditions.Thecurrentmethodusesaseparatepreheatandagitationsteptobreakupanysootagglomerizationthatmayhaveoccurredpriortocooldown.Theviscosityofhighlysooteddieselengineoilsasmeasuredinthistestmethodhavebeencorrelatedtopressurizationtimesinamotoredenginetest(1).CoolingProfiles:Foroilstobetestedat-20x00B0;Cand-25x00B0;C,TableX1.1applies.ThecoolingprofiledescribedinTableX1.1isbasedontheviscositypropertiesoftheASTMPumpabilityReferenceOils(PRO).Thisseriesofoilsincludesoilswithnormallow-temperatureflowpropertiesandoilsthathavebeenassociatedwithlow-temperaturepumpabilityproblems(2-7).1.1Thistestmethodcoversthemeasurementoftheyieldstressandviscosityofengineoilsaftercoolingatcontrolledratesoveraperiodof43or45htoafinaltesttemperatureof-20or-25x00B0;C.Theviscositymeasurementsaremadeatashearstressof525Paoverashearrateof0.4to15s-1.Thistestmethodissuitableformeasurementofviscositiesrangingfrom4000mPax00B7;sto>400000mPax00B7;s,andissuitableforyieldstressmeasurementsof7Pato>350Pa.1.2Thistestmethodisapplicableforuseddieseloils.Theapplicabilityandprecisiontootherusedorunusedengineoilsortopetroleumproductsotherthanengineoilshasnotbeendetermined.1.3Thistestmethodusesthemillipascalsecond(mPax00B7;s)astheunitofviscosity.Forinformation,theequivalentcentipoiseunitisshowninparentheses.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:E34
【国际标准分类号】:43_060_40
【页数】:8P.;A4
【正文语种】:英语
【英文标准名称】:ElectricConnectors-MatingandUnmatingForcesTestProcedure
【原文标准名称】:电连接器.匹配和非匹配力的试验程序
【标准号】:ANSI/EIA-364-13B-1998
【标准状态】:作废
【国别】:美国
【发布日期】:1998
【实施或试行日期】:
【发布单位】:美国国家标准学会(ANSI)
【起草单位】:ANSI
【标准类型】:()
【标准水平】:()
【中文主题词】:试验;电气元件;电连接器;电气工程
【英文主题词】:Connectingdevices;Electricconnectors;Electrical;Electricalcomponents;Electricalengineering;Electronicproducts;Force;Testing;Tests
【摘要】:
【中国标准分类号】:L23
【国际标准分类号】:29_120_20
【页数】:
【正文语种】:英语