【英文标准名称】:Preparationofsteelsubstratesbeforeapplicationofpaintsandrelatedproducts.Non-metallicblast-cleaningabrasives.Methodofdeterminationofapparentdensity
【原文标准名称】:涂漆及涂有关物品前的钢表面的加工.非金属喷砂清理.第F13部分:视密度的测定方法
【标准号】:BS7079Pt.F13-1994
【标准状态】:作废
【国别】:英国
【发布日期】:1994-03-15
【实施或试行日期】:
【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】:钢;试样制备;试验条件;清洁处理;非金属;喷砂清理;密度测量;表面处理;磨料;机械清洗
【英文主题词】:surfacetreatment;mechanicalcleaning;steels;densitymeasurement;cleaning;testingconditions;specimenpreparation;blast-cleaning;abrasives;non-metals
【摘要】:
【中国标准分类号】:A29
【国际标准分类号】:87_020;25_220_10
【页数】:6P;A4
【正文语种】:英语
【英文标准名称】:StandardPracticeforAcceleratedTestingforColorStabilityofPlasticsExposedtoIndoorOfficeEnvironments
【原文标准名称】:暴露在室内荧光灯和透窗入室日光下的塑料颜色稳定性加速试验的标准试验方法
【标准号】:ASTMD4674-2002a
【标准状态】:现行
【国别】:
【发布日期】:2002
【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】:D20.50
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:塑料;快速试验;荧光灯;自然采光;彩色稳定性
【英文主题词】:colorchange;color;plastics;officeenvironment;fluorescentlight
【摘要】:Testsconductedinaccordancewiththispracticeareintendedtoinducepropertychangesassociatedwithuseexposuretolightandheatintypicalofficeenvironments.Theseexposuresarenotintendedtosimulatethedeteriorationcausedbylocalizedphenomenasuchashandling,dirtcontamination,etc.Note58212;Caution:Caution:RefertopracticeG151forfullcautionaryguidanceapplicabletoalllaboratoryweatheringdevices.AdditionalinformationonsourcesofvariabilityandonstrategiesforaddressingvariabilitybydesignanddataanalysisoflaboratoryacceleratedexposuretestsisfoundinGuideG141.Variationinresultsmaybeexpectedarepossiblebetweenthedifferentmethodsdescribedinthispractice.Forexample,differencesinspectraldistributionofthelampsusedandvariationsintheirradianceforasingletypeoflampcancausesignificantdifferencesintestresults.Therefore,anynoreferencetotheuseofthispracticeshouldbemadeunlessaccompaniedbyareportpreparedinaccordancewithSection12thatdescribesneedstoincludeareferencetothemethodused.Reproducibilityoftestresultsbetweenlaboratorieshasbeenshowntobegoodwhenthestabilityofmaterialsisevaluatedintermsofperformancerankingcomparedtoothermaterialsortoacontrol.Therefore,exposureofasimilarmaterialofknownperformance(acontrol)atthesametimeasthetestmaterialsisstronglyrecommended.Itisrecommendedthatatleastthreereplicatesofeachmaterialbeexposedtoallowforstatisticalevaluationofresults.1.1Thispracticecoversthebasicprinciplesandoperatingproceduresforusingfluorescentlighttodeterminecolorstabilityofplasticswhenmaterialsareexposedintypicalofficeenvironmentswherefluorescentoverheadlightingandwindow-filtereddaylightareusedforilluminationandwheretemperatureandhumidityconditionsareinaccordancewithAmericanSocietyofHeating,Refrigerating,andAir-conditioningEngineers(ASHRAE)recommendationsforworkers''comfort.Note18212;ThereisnoequivalentISOstandard.1.2Thispracticedescribesfourmethodswherespecimensareexposedtofluorescentlightundercontrolledenvironmentalconditions.TwoofthemethodsuseanexposuredevicethatprovidesformixingoffluorescentlampsandtwoofthemethodsusedevicesthatcomplywithPracticeG154.Note2MethodIusescoolwhitefluorescentlampsandwindowglassfilteredfluorescentUVBlampsandisthesamemethoddescribedinpreviousversionsofthisstandard.1.3SpecimenpreparationandevaluationoftheresultsarecoveredinASTMmethodsorspecificationsforspecificmaterials.GeneralguidanceisgiveninPracticeG151.MorespecificinformationaboutmethodsfordeterminingthechangeinpropertiesafterexposureandreportingtheseresultsisdescribedinPracticeD5870.1.4ThevaluesstatedinSIunitsaretoberegardedasthestandard.1.5Unlessotherwisespecified,alldimensionsarenominal.1.6Thispracticemayinvolvehazardousmaterials,operations,andequipment.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,isany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.SpecificprecautionarystatementsaregiveninSection7.
【中国标准分类号】:G31
【国际标准分类号】:83_080_01
【页数】:8P.;A4
【正文语种】:
基本信息
| 标准名称： | 茎秆切碎还田机 技术条件 |
| 中标分类： |
农业、林业 >>
农、林机械与设备 >>
农机具 |
| 替代情况： | 被JB/T 6678-2001代替 |
| 发布日期： | |
| 实施日期： | 1992-07-01 |
| 首发日期： | |
| 作废日期： | 2001-10-01 |
| 出版日期： | |
| 页数： | 3页 |
适用范围
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前言
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引用标准
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所属分类： 农业 林业 农 林机械与设备 农机具