BS EN 3048-1992 具有自润滑轴套的球面防腐钢轴承.轻系列.环境温度高负荷.负荷和尺寸
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【英文标准名称】:Bearings,sphericalplainincorrosionresistingsteelwithself-lubricatingliner.Lightseries.Elevatedloadsatambienttemperature.Dimensionsandloads
【原文标准名称】:具有自润滑轴套的球面防腐钢轴承.轻系列.环境温度高负荷.负荷和尺寸
【标准号】:BSEN3048-1992
【标准状态】:作废
【国别】:英国
【发布日期】:1992-08-15
【实施或试行日期】:1992-08-15
【发布单位】:英国标准学会(BSI)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:动力荷载;名称与符号;起动;静荷载;球形;粗糙度;铬;滑动轴承;自润滑轴承;轴承;粗糙度(表面);扭矩;尺寸;作标记;飞行器部件;尺寸公差;电镀;厚度;硬度;质量;耐腐蚀钢;质量(物质);金属覆层;飞机机架轴承;温度;钢
【英文主题词】:
【摘要】:
【中国标准分类号】:J11
【国际标准分类号】:49_035
【页数】:12P;A4
【正文语种】:英语
【英文标准名称】:StandardPracticeforDeterminationofSolubleResidualContaminationinbySoxhletExtraction
【原文标准名称】:索格利特萃取法测定可溶性残余杂质的标准试验方法
【标准号】:ASTMG120-2001
【标准状态】:现行
【国别】:
【发布日期】:2001
【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】:G04.02
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:contaminant;contamination;extraction;nonvolatileresidue;oxygensystems;Soxhletextraction
【摘要】:Itisexpectedthatthistestmethodwillbesuitabletoidentifyandquantifycontaminantsfoundinsystems,systemmaterials,andcomponentsusedinsystemsrequiringahighlevelofcleanliness,suchasoxygen.Softgoodssuchassealsandvalveseatscanbetestedasreceived.Glovesandwipes,orsamplesthereof,tobeusedinthecleaningoperationcanbeevaluatedpriortousetoensurethattheproposedcleaningsolventdoesnotextractcontaminantsandresiduesonthesurfacetobecleaned.Wipesorothercleaningequipmentcanbetestedafterusetodeterminetheamountofcontaminantremovedfromasurface.ThisprocedurecanbeusedtoobtainsamplesforNVRanalysisusingcontaminatedcontrolcouponsthatweresubjectedtothecleaningprocessascontrolstovalidatecleaningoperations.Theselectionofthesolventrequiressomeknowledgeofthecontaminant(seePracticeG93forrecommendations).Ifanonvolatileresidue(NVR)analysisistobeperformedonthemolecularcontaminant,theboilingpointofthesolventshallbesignificantlylowerthanthatofthecontaminant.Forotheranalyticalmethods,thetestermustknowtheaccuracyoftheanalyticalmethods,andthesolventshallbechosensoasnottointerferewiththeselectedanalyticalmethod.ToidentifythecompositionoftheNVR,analyticalmethodssuchasinfraredspectroscopyorgaschromatography/massspectroscopyhavebeenusedsatisfactorily.1.1Thispracticedescribesaprocedureforthedeterminationofresidualcontaminationinsystemsandcomponentsrequiringahighlevelofcleanliness,suchasoxygen,bySoxhletextraction.1.2Thispracticemaybeusedforextractingnonvolatileandsemivolatileresiduesfromsolidssuchasnewandusedgloves,newandusedwipes,contaminatedtestspecimensorcontrolcoupons,smallpiecesofhardware,componentsoftgoods,etc.Whenusedwithproposedcleaningmaterials(wipes,gloves,etc.),thispracticemaybeusedtodeterminethepotentialoftheproposedsolventtoextractcontaminants(plasticizers,residualdetergents,brighteners,etc.)anddepositthemonthesurfacebeingcleaned.1.3Thispracticeisnotsuitablefortheevaluationofparticulatecontamination.1.4ThevaluesstatedinSIunitsarestandard.Valuesinparenthesesareforinformationonly.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Z13
【国际标准分类号】:71_040_40
【页数】:4P.;A4
【正文语种】:
【英文标准名称】:StandardTestMethodforResistanceofFineAggregatetoDegradationbyAbrasionintheMicro-DevalApparatus
【原文标准名称】:使用微型台佛尔仪测量细精级料抗磨损降级的试验方法
【标准号】:ASTMD7428-2008e1
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【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】:D04.51
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:abrasionresistance;fineaggregate;micro-Deval;test;Abrasionresistance;Fineaggregate;Micro-Devalapparatus
【摘要】:TheMicro-Devalabrasiontestisatestoffineaggregatetodetermineabrasionlossinthepresenceofwaterandanabrasivecharge.Manyaggregatesaremoresusceptibletoabrasionwhenwetthandry,andtheuseofwaterinthistestincorporatesthisreductioninresistancetodegradation.Thetestresultsarehelpfulinevaluatingthetoughness/abrasionresistanceoffineaggregatesubjecttoabrasionwhenadequateinformationisnotavailablefromservicerecords.Thistestissuitableformeasuringtheamountofweak,softmaterialsuchasshaleorshaleycarbonateinfineaggregate.Materialsthatgivealowlossinthistestareunlikelytoexhibitsignificantdegradationduringhandling,mixingorplacing.ThereisarelationshipbetweendryingshrinkageofcementmortarandMicro-Devalabrasionlossoffineaggregate,withhigherlossmaterialsresultinginhigherdryingshrinkage.Descriptionsofthedevelopmentofthetestandtherelationshipwithotherpropertieshavebeenpublished.,,TheMicro-Devalabrasiontestonfineaggregateisusefulfordetectingchangesinpropertiesofaggregateproducedfromanaggregatesourceaspartofaqualitycontrolorqualityassuranceprocess.TheMicro-Devalabrasiontestonfineaggregate,incontrasttotheversiononcoarseaggregate,hasasignificantcorrelationwiththeMagnesiumSulfatesoundnesslossoffineaggregate.TheMicro-Devaltestonfineaggregatehasbetterprecisionthanthesulfatesoundnesstest,isquicker,andmaybeusedinplaceofthattest.Adviceonspecificvaluesforselectionofaggregatewillbefoundintheappendix.1.1ThistestmethodcoversaprocedurefortestingfineaggregateforresistancetoabrasionusingtheMicro-Devalapparatus.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.1.3Thetextofthismethodreferencesnotesandfootnoteswhichprovideexplanatorymaterial.Thesenotesandfootnotes(excludingthoseintablesandfigures)shallnotbeconsideredasrequirementsofthetestmethod.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Q13
【国际标准分类号】:91_100_30
【页数】:6P.;A4
【正文语种】:英语
