BS 684-2.4-1976 脂肪和油脂分析方法.第2部分:其他方法.第4节:总油脂物质计算
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来源:标准资料网
【英文标准名称】:Methodsofanalysisoffatsandfattyoils-Othermethods-Calculationoftotalfattymatter
【原文标准名称】:脂肪和油脂分析方法.第2部分:其他方法.第4节:总油脂物质计算
【标准号】:BS684-2.4-1976
【标准状态】:现行
【国别】:英国
【发布日期】:1976-10-29
【实施或试行日期】:1976-10-29
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:动物油;脂肪含量测定;植物油;动物脂肪;化学分析和试验;含量测定;植物脂肪;食品检验;脂肪
【英文主题词】:Animalfats;Animaloils;Chemicalanalysisandtesting;Determinationofcontent;Fatcontentdetermination;Fats;Foodtesting;Vegetablefats;Vegetableoils
【摘要】:ThisSectiondescribesamethodforthecalculationofthetotalfattymatter.
【中国标准分类号】:X14
【国际标准分类号】:67_200_20
【页数】:2P;A4
【正文语种】:英语
【英文标准名称】:StandardPracticeforEvaluatingCompatibilityofBinaryMixturesofLubricatingGreases
【原文标准名称】:润滑脂的二元混合物的相容性评估的标准实施规程
【标准号】:ASTMD6185-2010
【标准状态】:现行
【国别】:美国
【发布日期】:2010
【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.G0.01
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:binarymixtures;compatibility;incompatibility;lubricatinggrease;mixtures;Binarymixtures;Compatibility--petroleumproducts;Compositionanalysis--petroleumproducts;Incompatibility;Lubricatinggrease
【摘要】:Thecompatibilityofgreasescanbeimportantforusersofgrease-lubricatedequipment.Itiswellknownthatthemixingoftwogreasescanproduceasubstancemarkedlyinferiortoeitherofitsconstituentmaterials.Oneormoreofthefollowingcanoccur.Amixtureofincompatiblegreasesmostoftensoftens,sometimesexcessively.Occasionally,itcanharden.Inextremecases,thethickenerandliquidlubricantwillcompletelyseparate.Bleedingcanbesoseverethatthemixedgreasewillrunoutofanoperatingbearing.Excessivesyneresiscanoccur,formingpoolsofliquidlubricantseparatedfromthegrease.Droppingpointscanbereducedtotheextentthatgreaseorseparatedoilrunsoutofbearingsatelevatedoperatingtemperatures.Sucheventscanleadtocatastrophiclubricationfailures.Becauseofsuchoccurrences,equipmentmanufacturersrecommendcompletelycleaningthegreasefromequipmentbeforeinstallingadifferentgrease.Servicerecommendationsforgrease-lubricatedequipmentfrequentlyspecifythecaveatx2013;donotmixgreasesunderanycircumstances.Despitethisadmonition,greasemixingwilloccurand,attimes,cannotbeavoided.Insuchinstances,itwouldbeusefultoknowwhetherthemixingoftwogreasescouldleadtoinadequatelubricationwithdisastrousconsequences.Equipmentusersmostoftendonothavetheresourcestoevaluategreasecompatibilityandmustrelyontheirsuppliers.Mixingofgreasesisahighlyimprudentpractice.Greaseandequipmentmanufacturersalikerecognizesuchpracticeswilloccurdespiteallwarningstothecontrary.Thus,bothusersandsuppliershaveaneedtoknowthecompatibilitycharacteristicsofthegreasesinquestion.Therearetwoapproachestoevaluatingthecompatibilityofgreasemixtures.Oneistodeterminewhethersuchmixturesmeetthesamespecificationrequirementsastheconstituentcomponents.Thisapproachisnotaddressedbythispractice.Instead,thispracticetakesaspecification-independentapproach;itdescribestheevaluationofcompatibilityonarelativebasisusingspecifictestmethods.Threetestmethodsareusedbecausefewerarenotsufficientlydefinitive.Forexample,inonestudy,using100000-strokeworkedpenetrationforevaluation,62%ofthemixtureswerejudgedtobecompatible.Inahigh-temperaturestoragestabilitystudy,coveringabroaderspectrumofgreasetypes,onlyone-thirdofthemixtureswerecompatible.Thesestudiesuseddifferentcriteriatojudgecompatibility.Compatibilitycannotbepredictedwithcertaintyfromforeknowledgeofgreasecomposition.Generally,greaseshavingthesameorsimilarthickenertypeswillbecompatible.Uncommonly,evengreasesofthesametype,althoughnormallycompatiblewhenmixed,canbeincompatiblebecauseofincompatibleadditivetreatments.Thus,compatibilityneedstobejudgedonacase-by-casebasis.Twoconstituentgreasesareblendedinspecificratios.A50:50mixturesimulatesaratiothatmightbeexperiencedwhenonegrease(GreaseA)isinstalledinabearingcontainingapreviouslyinstalled,differentgrease(GreaseB),andnoattemptismadetoflushoutGreaseBwithGreaseA.The10:90and90:10ratiosareintendedtosimulateratiosthatmightoccurwhenattemptsaremadetoflushoutGreaseBwithGreaseA.Note18212;Somecompaniesevaluate25:75and75:25ratiomixturesinsteadof10:90and90:10ratiomixtures.But,thelattertworatios,whichareprescribedbythispractice,areconsideredmorerepresentativeoftheflushingpracticedescribedin5.3.Incompatibilityismostoftenrevealedbytheevaluationof50:50mixtures.However,insomeinstances50:50mixturesarecompatibleandmorediluteratiosareincompatib........
【中国标准分类号】:E36
【国际标准分类号】:75_100
【页数】:8P.;A4
【正文语种】:英语
【英文标准名称】:Technicalspecificationsforvalvesforshipboarduse-Part4:Stopvalves
【原文标准名称】:船用阀门技术规范.第4部分:停止阀
【标准号】:DIN85003-4-2011
【标准状态】:现行
【国别】:德国
【发布日期】:2011-02
【实施或试行日期】:
【发布单位】:德国标准化学会(DE-DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:验收规范;交货条件;检验;材料;船队;质量;质量保证;船舶;规范(验收);停止阀;试验;阀门
【英文主题词】:Acceptancespecification;Deliveryconditions;Inspection;Materials;Navy;Quality;Qualityassurance;Ships;Specification(approval);Stopvalves;Testing;Valves
【摘要】:
【中国标准分类号】:J16
【国际标准分类号】:23_060_10;47_020_30
【页数】:5P;A4
【正文语种】:德语
