【英文标准名称】:StandardTestMethodforIgnitionSensitivityofMaterialstoGaseousFluidImpact
【原文标准名称】:材料对气流冲击着火敏感度的标准试验方法
【标准号】:ASTMG74-2008
【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】:G04.01
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:gaseousfluidimpact;ignitionsensitivity;oxygenenrichedenvironment;Airanalysis;Gases;High-velocitygaseousimpacttesting;Ignition--rubber/cellularmaterials;Ignitionsensitivity;Impacttesting;Liquids--laboratoryapplications;Lubricating
【摘要】:Thistestevaluatestherelativesensitivityofmaterialstodynamicpressureimpactsbyvariousgaseousfluidmedia(mayincludemixturesofgases).Anychangeorvariationsintestspecimenconfigurations,thickness,preparation,andcleanlinessmaycauseasignificantchangeinimpactsensitivity/reaction.Areactionisindicatedbyanabruptincreaseintestspecimentemperatureorbyobviouschangesinodor,color,ormaterialappearance,oracombinationthereof,asobservedduringposttestexaminations.Odoraloneisnotconsideredpositiveevidencethatareactionhasoccurred.Suggestedcriteriafortestcompletionatagivenpressureare:Eachspecimenissubjectedtofiveimpacts.Amaterialpassesifnoreactionsoccurin20successivesamples.Amaterialfailsifonereactionoccursinamaximumof20orfewersuccessivesamples.Materialsmayberankedbythemaximumpressure(pressurethreshold)atwhichtheypassthetest.Materialacceptancemaybeonthebasisofpassingataselectedpressure.1.1Thismethoddescribesatechniquetodeterminetherelativesensitivityofmaterialstodynamicpressureimpactsbygasessuchasoxygen,air,orblendsofgasescontainingoxygen.1.2Thismethoddescribesthetestapparatusandtestproceduresthatmaybeemployedintheevaluationofmaterialsforuseingasesunderdynamicpressureoperatingconditionsuptogagepressuresof10000psi(69MPa)atambienttemperature.1.3Thismethodisprimarilyatestforrankingofmaterials.Thismethodisnotnecessarilyvalidfordeterminationofthesensitivityofthematerialsinanx201C;as-usedx201D;configurationsincethematerialsensitivitymaybealteredbecauseofchangesinmaterialconfiguration,usage,andenvironment.Acceptabilityofanymaterialmaybebasedonitsperformanceataparticulartestpressure,ortestpressuremaybevariedtodeterminethereactionthresholdofamaterial,asspecifiedbytheuser.1.4Thecriteriausedfortheacceptance,retest,andrejectionofmaterialsforanygivenapplicationshallbedeterminedbytheuserandarenotfixedbythismethod.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.ForspecificprecautionsseeSection7.
【中国标准分类号】:C80
【国际标准分类号】:13_230
【页数】:7P.;A4
【正文语种】:英语
基本信息
标准名称: | YFB系列粉尘防爆型三相异步电动机(机座号63~355)技术条件 |
英文名称: | Specification of YFB series for dust explosion-proofthree phases asynchronous motor(Frame size 63to355) |
中标分类: |
电工 >>
旋转电机 >>
防爆电机 |
ICS分类: |
电气工程 >>
特殊工作条件用电气设备 >>
易爆环境用电气设备
|
发布部门: | 全国爆电气设备标委会防爆电机分会 |
发布日期: | 2002-12-01 |
实施日期: | 2002-07-16 |
首发日期: | 1900-01-01 |
作废日期: | 1900-01-01 |
归口单位: | 全国爆电气设备标委会防爆电机分会 |
出版社: | 机械工业出版社 |
出版日期: | 1900-01-01 |
页数: | 32 页 |
批文号: | 经贸委公告[2002]44号 |
适用范围
本标准规定了YFB系列除尘防爆型异步电动机的型式、基本参数与尺寸、技术要求、试验方法与检验规则及标志和包装的要求。
前言
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引用标准
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所属分类: 电工 旋转电机 防爆电机 电气工程 特殊工作条件用电气设备 易爆环境用电气设备