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YB/T 064-1994 液压抓具

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基本信息
标准名称:液压抓具
中标分类: 冶金 >> 冶金机械设备 >> 其他动力设备
ICS分类: 材料储运设备 >> 起重设备
发布部门:中华人民共和国冶金工业部
发布日期:1994-09-27
实施日期:1995-05-01
首发日期:1900-01-01
作废日期:1900-01-01
提出单位:中华人民共和国冶金工业部生产协调司
归口单位:中华人民共和国冶金工业部北京冶金设备研究院
起草单位:首钢液压机械厂
起草人:闫玉芝、韩勇、丁晓东
出版社:冶金工业出版社
出版日期:1995-05-01
页数:9页
适用范围

本标准规定了液压抓具的形式、基本参数、技术要求、试验方法、检验规则、标志、包装和运输等。
本标准适用于工作地点、环境温度为-40~60℃进行各种装卸作业的液压抓具。

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所属分类: 冶金 冶金机械设备 其他动力设备 材料储运设备 起重设备
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【英文标准名称】:
【原文标准名称】:非液体饱和处理系统
【标准号】:ANSI/NSF41-1998
【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(US-ANSI)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:
【中国标准分类号】:
【国际标准分类号】:
【页数】:
【正文语种】:英语


【英文标准名称】:StandardPracticeforExaminationofSeamless,Gas-Filled,PressureVesselsUsingAcousticEmission
【原文标准名称】:用声音排放法检验无缝、充气的压力容器的标准试验方法
【标准号】:ASTME1419-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【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】:E07.04
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:acousticemission;flawsinsteelvessels;gaspressurevessels;seamlessgascylinders;seamlesssteelcylinders;seamlessvessels;Acousticemission(AE)testing--metals/metallicmaterials;Flawdetection;Gascylinders;Gaspressuresystems/applicat
【摘要】:Becauseofsafetyconsiderations,regulatoryagencies(forexample,U.S.DepartmentofTransportation)requireperiodicexaminationsofvesselsusedintransportationofindustrialgases(seeSection49,CodeofFederalRegulations).TheAEexaminationhasbecomeacceptedasanalternativetothecommonhydrostaticprooftest.Inthecommonhydrostatictest,volumetricexpansionofvesselsismeasured.AnAEexaminationshouldnotbeusedforaperiodofoneyearafteracommonhydrostatictest.SeeNote2.Note28212;TheKaisereffectrelatestodecreasedemissionthatisexpectedduringasecondpressurization.Commonhydrostatictestsusearelativelyhighpressure(167%ofnormalservicepressure).(SeeSection49,CodeofFederalRegulations.)IfanAEexaminationisperformedtoosoonaftersuchapressurization,theAEresultswillbeinsensitivetoalowerexaminationpressure(thatis,thelowerpressurethatisassociatedwithanAEexamination).Pressurization:Generalpracticeinthegasindustryistouselowpressurizationrates.Thispracticepromotessafetyandreducesequipmentinvestment.TheAEexaminationsshouldbeperformedwithpressurizationratesthatallowvesseldeformationtobeinequilibriumwiththeappliedload.Typicalcurrentpracticeistouseratesthatapproximate500psi/h(3.45MPa/h).Gascompressorsheatthepressurizingmedium.Afterpressurization,vesselpressuremaydecayasgastemperatureequilibrateswithambientconditions.Emissionfromflawsiscausedbyflawgrowthandsecondarysources(forexample,cracksurfacecontactandcontainedmillscale).Secondarysourcescanproduceemissionthroughoutvesselpressurization.Whenpressurewithinavesselislow,andgasisthepressurizingmedium,flowvelocitiesarerelativelyhigh.Flowinggas(turbulence)andimpactbyentrainedparticlescanproducemeasurableemission.Consideringthis,acquisitionofAEdatamaycommenceatsomepressuregreaterthanstartingpressure(forexample,1/3ofmaximumexaminationpressure).MaximumTestPressure8212;Seriousflawsusuallyproducemoreacousticemission(thatis,moreevents,eventswithhigherpeakamplitude)fromsecondarysourcesthanfromflawgrowth.Whenvesselsarepressurized,flawsproduceemissionatpressureslessthannormalfillpressure.Amaximumexaminationpressurethatis10%greaterthannormalfillpressureallowsmeasurementofemissionfromsecondarysourcesinflawsandfromflawgrowth.PressurizationSchedule8212;Pressurizationshouldproceedatratesthatdonotproducenoisefromthepressurizingmediumandthatallowvesseldeformationtobeinequilibriumwithappliedload.Pressureholdsarenotnecessary;however,theymaybeusefulforreasonsotherthanmeasurementofAE.ExcessbackgroundnoisemaydistortAEdataorrenderthemuseless.Usersmustbeawareofthefollowingcommonsourcesofbackgroundnoise:highgas-fillrate(measurableflownoise);mechanicalcontactwiththevesselbyobjects;electromagneticinterference(EMI)andradiofrequencyinterference(RFI)fromnearbybroadcastingfacilitiesandfromothersources;leaksatpipeorhoseconnections;andairbornesandparticles,insects,orraindrops.Thispracticeshouldnotbeusedifbackgroundnoisecannotbeeliminatedorcontrolled.1.1Thispracticeprovidesguidelinesforacousticemission(AE)examinationsofseamlesspressurevessels(tubes)ofthetypeusedfordistributionorstorageofindustrialgases.1.2Thispracticerequirespressurizationtoalevelgreaterthanno......
【中国标准分类号】:A82
【国际标准分类号】:23_020_30
【页数】:7P.;A4
【正文语种】:英语