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ZB J 55052-1990 内螺纹磨床 精度

作者:标准资料网 时间:2024-03-28 21:35:40  浏览:8434   来源:标准资料网
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基本信息
标准名称:内螺纹磨床 精度
中标分类: 机械 >> 金属切削机床 >> 磨床
替代情况:被JB/T 9926.1-99代替
发布日期:
实施日期:1991-01-01
首发日期:
作废日期:
出版日期:
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前言

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目录

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所属分类: 机械 金属切削机床 磨床
下载地址: 点击此处下载
【英文标准名称】:StandardTestMethodforCriticalRadiantFluxofExposedAtticFloorInsulationUsingaRadiantHeatEnergySource
【原文标准名称】:用辐射热能源测量暴露屋顶层绝缘材料临界辐射通量用标准试验方法
【标准号】:ASTME970-2007
【标准状态】:现行
【国别】:
【发布日期】:2007
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:E05.22
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:底部;建筑;建设工程;能源;绝缘材料;辐射热;测试;
【英文主题词】:atticfloorinsulation;cellulosicfiberinsulation;criticalradiantflux;fire;loosefillinsulation;mineralfiberinsulation;radiantpanel;
【摘要】:Thisfire-test-responsestandardisdesignedtoprovideabasisforestimatingoneaspectofthefireexposurebehaviortoexposedinsulationinstalledonthefloorsofbuildingattics.Thetestenvironmentisintendedtosimulateconditionsthathavebeenobservedanddefinedinfull-scaleatticexperiments.Thetestisintendedtobesuitableforregulatorystatutes,specificationacceptance,designpurposes,ordevelopmentandresearch.Thefundamentalassumptioninherentinthetestisthatcriticalradiantfluxisonemeasureofthesurfaceburningcharacteristicsofexposedinsulationonfloorsorbetweenjoistsofattics.Thetestisapplicabletoatticfloorinsulationspecimensthatfolloworsimulateacceptedinstallationpractice.Inthisprocedure,thespecimensaresubjectedtooneormorespecificsetsoflaboratoryfiretestexposureconditions.Ifdifferenttestconditionsaresubstitutedortheanticipatedend-useconditionsarechanged,cautionshouldbeusedtopredictchangesintheperformancecharacteristicsmeasuredbyorfromthistest.Therefore,theresultsarestrictlyvalidonlyforthefiretestexposureconditionsdescribedinthisprocedure.5.5.1Ifthetestresultsobtainedbythistestmethodaretobeconsideredinthetotalassessmentoffirehazardinabuildingstructure,thenallpertinentestablishedcriteriaforfirehazardassessmentdevelopedbyCommitteeE-5mustbeincludedintheconsideration.1.1Thisfire-test-responsestandarddescribesaprocedureformeasuringthecriticalradiantfluxofexposedatticfloorinsulationsubjectedtoaflamingignitionsourceinagradedradiantheatenergyenvironmentinatestchamber.Thespecimenisanyatticfloorinsulation.Thistestmethodisnotapplicabletothoseinsulationsthatmeltorshrinkawaywhenexposedtotheradiantheatenergyenvironmentorthepilotburner.1.2Thisfire-test-responsestandardmeasuresthecriticalradiantfluxatthepointatwhichtheflameadvancesthefarthest.Itprovidesabasisforestimatingoneaspectoffireexposurebehaviorforexposedatticfloorinsulation.Theimposedradiantfluxsimulatesthethermalradiationlevelslikelytoimpingeonthefloorsofatticswhoseuppersurfacesareheatedbythesunthroughtherooforbyflamesfromanincidentalfireintheattic.Thisfire-test-responsestandardwasdevelopedtosimulateanimportantfireexposurecomponentoffiresthatdevelopinattics,butisnotintendedforuseinestimatingflamespreadbehaviorofinsulationinstalledotherthanontheatticfloor.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Thevaluesgiveninparenthesesareforinformationonly.1.4Thetextofthisstandardreferencesnotesandfootnotesthatprovideexplanatoryinformation.Thesenotesandfootnotes,excludingthoseintablesandfigures,shallnotbeconsideredasrequirementsofthisstandard.1.5Thisstandardisusedtomeasureanddescribetheresponseofmaterials,products,orassembliestoheatandflameundercontrolledconditions,butdoesnotbyitselfincorporateallfactorsrequiredforfirehazardorfireriskassessmentofthematerials,products,orassembliesunderactualfireconditions.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.1.6Thetextofthisstandardreferencesnotesandfootnoteswhichprovideexplanatorymaterial.Thesenotesandfootnotes(excludingthoseintablesandfigures)shallnotbeconsideredasrequirementsofthestandard.
【中国标准分类号】:P31
【国际标准分类号】:91_120_10;91_120_10
【页数】:11P.;A4
【正文语种】:


基本信息
标准名称:液体葡萄糖及试验方法
发布日期:1900-01-01
实施日期:1900-01-01
首发日期:1900-01-01
作废日期:1900-01-01
出版日期:1900-01-01
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所属分类: 食品 食品加工与制品 肉类加工制品

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