【英文标准名称】:StandardTestMethodforRadialCrushingStrength,K,ofPowderMetallurgy(P/M)BearingsandStructuralMaterials
【原文标准名称】:粉末冶金(P/M)承重和结构材料的径向压溃强度K的标准试验方法
【标准号】:ASTMB939-2009
【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】:B09.04
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:K;materialstrength;PMbearings;radialcrushingstrength;Structuralmaterials;Powdermetallurgy(P/M)materials;Radialcrushing;Radialcrushingforce
【摘要】:TheradialcrushingstrengthtestisadestructiveprocedureusedtodetermineamaterialstrengthcharacteristicofPMbearingsandhollowcylindricaltestspecimens.Thesedatacanbeusedtograde,classify,andevaluatethematerials.ThePMbearingSpecificationsB438andB439requiretheuseofthistestmethodasanacceptancetestforthestrengthofoil-impregnatedsinteredbearings.Thistestmethodmaybeusedbypowderproducersandpartsmanufacturersasalotacceptancetestformetalpowdersandlubricatedpowdermixturesintendedfortheproductionofporousparts.CompaniesinthePMindustryusethistestasamanufacturingcontroltestbecauseitisappropriateforproductionpractices.RadialcrushingstrengthisapropertyofthePMmaterialbutisnotadesignvalue.However,experiencehasshownthattheradialcrushingstrengthofamaterialisapproximatelytwicetheultimatetensilestrength.1.1Thistestmethodcoverstheequipmentandlaboratoryprocedureforthedeterminationoftheradialcrushingstrengthofmaterialsusingeitheraplainpowdermetallurgy(PM)bearingorathin-walledhollowcylindricaltestspecimen.Thisisadestructivetestthatproducesquantitativeresults.1.2Limitations:1.2.1Theprincipleofthisprocedureisbasedonthematerialbeingtestedhavingminimalductility.Thepermanentdeflectionofthecylinderduringthetestshouldnotexceed10%oftheoutsidediameter.1.2.2Theradialcrushingstrengthtestresultsshouldbeusedonlyasaguideifthetestspecimenhasawallthicknessthatisgreaterthanone-thirdoftheoutsidediameter.Thesetestresultsshouldthenonlybeusedforcomparisonwithdatafromthetestspecimensoflikematerialsandsimilardimensions.1.3Withtheexceptionofdensityvalues,forwhichtheg/cm3unitistheindustrystandard,thevaluesstatedininch-poundunitsaretobeconsideredthestandard.ThevaluesinSIunits,showninparenthesishavebeenconvertedinaccordancewithIEEE/ASTMStandardSI10,maybeapproximateandareonlyincludedforinformation.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:H72
【国际标准分类号】:77_160
【页数】:3P.;A4
【正文语种】:英语
基本信息
| 标准名称： | 粮食温度电子测量仪器技术条件 |
| 英文名称： | Specification for electronic temperature meters for cereal grains |
| 中标分类： |
石油 >>
石油综合 >>
技术管理 |
| 发布日期： | 1977-05-03 |
| 实施日期： | 1977-10-01 |
| 首发日期： | 1900-01-01 |
| 作废日期： | 1900-01-01 |
| 出版日期： | 1900-01-01 |
| 页数： | 4页 |
适用范围
本技术条件规定了粮食温度电子测量仪器（以下简称仪器）的总要求，对于多用仪器（如粮食水分，温度电子测量仪）中粮食温度测量部分，也应符合本技术条件的要求。
前言
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目录
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引用标准
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所属分类： 石油 石油综合 技术管理
【英文标准名称】:Safetyoftoys-Part4:Experimentalsetsforchemistryandrelatedactivities;EnglishversionofDINEN71-4:2009-12
【原文标准名称】:玩具安全.第4部分:化学及相关试验用试验装置.德文版本EN71-4-2009
【标准号】:DINEN71-4-2009
【标准状态】:现行
【国别】:德国
【发布日期】:2009-12
【实施或试行日期】:2009-12-01
【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】:化学物质;化学制品;化学;儿童;含量;危险化学品;危险物质;定义;设备;设备安全;化学实验仪器;试验性成套玩具;实验工作;适用性;图形符号;损害健康;实验装置;使用说明书;处理;最大含量;安全;安全工程;安全措施;安全要求;规范(验收);物质;符号;玩具;警告标志;警告
【英文主题词】:Chemicalsubstances;Chemicals;Chemistry;Children;Contents;Dangerouschemicals;Dangerousmaterials;Definitions;Equipment;Equipmentsafety;Experimentalsetsforchemistry;Experimentaltoysets;Experimentation;Fitnessforpurpose;Graphicsymbols;Injurytohealth;Installationsforexperiments;Instructionsforuse;Marking;Maximumcontents;Safety;Safetyengineering;Safetymeasures;Safetyrequirements;Specification(approval);Substances;Symbols;Toys;Warningnotices;Warnings
【摘要】:ThispartoftheEuropeanStandardEN71specifiesrequirementsforthemaximumamountofcertainsubstancesandpreparationsusedinexperimentalsetsforchemistryandrelatedactivities.ThesesubstancesandpreparationsarechemicalsclassifiedasdangerousbytheDirectivesondangeroussubstances[1]anddangerouspreparations[2](includingsubstanceswhichhavebeenself-classifiedaccordingtotherequirementsoftheseDirectives),--substancesandpreparationswhichinexcessiveamountsmayharmthehealthofthechildrenusingthembutwhicharenotclassifiedasdangerousbytheabovementionedDirectivesand--anyotherchemicalsubstancesandpreparationsdeliveredwiththetoy.Thisstandardappliestochemistrysetsandsupplementarysets.Italsocoverstoysforexperimentswithinthefieldsofmineralogy,biology,physics,microscopyandenvironmentalsciencewhenevertheycontainoneormorechemicalsubstancesand/orpreparations.Italsospecifiesrequirementsformarking,contentslist,instructionsforuseandforequipmentintendedforcarryingouttheexperimentsOtherchemicaltoysarespecifiedinEN71-5.NOTETheterms"substance"and"preparation"asusedindirectives67/548/EEC[1]and1999/45/EC[2]arealsousedinthe"REACHRegulation'Regulation(EC)No1907/2006[4].ThisregulationrequiresthataccountbetakenoftheemerginginternationalstandardsintheregulationofchemicalssuchastheGloballyHarmonisedSystem(GHS)ofclassificationandlabellingofchemicals.TheEUhasnowproposedatimetablefortheintroductionofGHSanditisexpectedthatthetwoabovementioneddirectiveswillberepealedon1June2015.IntheGHSregulationtheterm'mixture'ratherthan'preparation'isused.Preparationsandmixturesshouldbeconsideredsynonymous;botharemixturesorsolutionsofsubstancesthatdonotreactwitheachother.
【中国标准分类号】:Y57
【国际标准分类号】:97_200_50
【页数】:24P.;A4
【正文语种】:英语