【英文标准名称】:StandardSpecificationforAlloy-SteelandStainlessSteelBoltingforLow-TemperatureService
【原文标准名称】:低温作业用合金钢和不锈钢螺栓标准规格
【标准号】:ASTMA320/A320M-2011
【标准状态】:现行
【国别】:
【发布日期】:2011
【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】:A01.22
【标准类型】:(Specification)
【标准水平】:()
【中文主题词】:附加元素;奥氏体不锈钢
【英文主题词】:additionalelements;austeniticstainlesssteel
【摘要】:1.1Thisspecificationcoversalloysteelboltingforpressurevessels,valves,flanges,andfittingsforlow-temperatureservice.SeeSpecificationforthedefinitionofbolting.Thebarsshallbehot-wroughtandmaybefurtherprocessedbycenterlessgrindingorbycolddrawing.Austeniticstainlesssteelmaybesolutionannealedorannealedandstrain-hardened.Whenstrainhardenedausteniticstainlesssteelisordered,thepurchasershouldtakespecialcaretoensurethatAppendixX1isthoroughlyunderstood.1.2Severalgradesarecovered,includingbothferriticandausteniticsteelsdesignatedL7,B8,etc.Selectionwilldependondesign,serviceconditions,mechanicalproperties,andlow-temperaturecharacteristics.ThemechanicalrequirementsofTable1indicatethediametersforwhichtheminimummechanicalpropertiesapplytothevariousgradesandclasses,andTable2stipulatestherequirementsforCharpyimpactenergyabsorption.Themanufacturershoulddeterminethatthematerialcanconformtotheserequirementsbeforepartsaremanufactured.Forexample,whenGradeL43isspecifiedtomeettheTable2impactenergyvaluesatx2212;150x00B0;F[x2212;101x00B0;C],additionalrestrictions(suchasprocuringasteelwithlowerPandScontentsthanmightnormallybesupplied)inthechemicalcompositionforAISI4340arelikelytoberequired.Note18212;Thecommitteeformulatingthisspecificationhasincludedseveralgradesofmaterialthathavebeenratherextensivelyusedforthepresentpurpose.Othercompositionswillbeconsideredforinclusionbythecommitteefromtimetotimeastheneedbecomesapparent.Usersshouldnotethathardenabilityofsomeofthegradesmentionedmayrestrictthemaximumsizeatwhichtherequiredmechanicalpropertiesareobtainable.1.3Thefollowingreferencedgeneralrequirementsareindispensableforapplicationofthisspecification:Specification.1.4NutsforusewithboltingarecoveredinSection10andthenutmaterialshallbeimpacttested.1.5SupplementaryRequirementsareprovidedforuseattheoptionofthepurchaser.Thesupplementaryrequirementsshallapplyonlywhenspecifiedinthepurchaseorderorcontract.
【中国标准分类号】:
【国际标准分类号】:21_060_01;77_080_20
【页数】:8P.;A4
【正文语种】:
【英文标准名称】:Safetyofmachinery-Safety-relatedpartsofcontrolsystems-Part1:Generalprinciplesfordesign(ISO13849-1:2006);EnglishversionofDINENISO13849-1:2008-12
【原文标准名称】:机械安全.控制系统的安全相关部件.第1部分:设计用一般原理(ISO13849-1-2006).英文版本DINENISO13849-1-2008
【标准号】:DINENISO13849-1-2008
【标准状态】:现行
【国别】:德国
【发布日期】:2008-12
【实施或试行日期】:2008-12-01
【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】:类别;控制;控制装置;控制设备;控制系统;定义;设计;电气工程;设备安全;指导手册;危害;接口;机械;职业安全;可编程序的;性能;危险防护;保护设备;人体保护;安全;安全组件;安全设计;安全装置;机械安全;安全要求;规范(验收);验证;工作场所安全
【英文主题词】:Categories;Control;Controldevices;Controlequipment;Controlsystems;Definition;Definitions;Design;Electricalengineering;Equipmentsafety;Guidebooks;Hazards;Interfaces;Machines;Occupationalsafety;Programmable;Properties;Protectionagainstdanger;Protectiondevices;Protectionofpersons;Safety;Safetycomponents;Safetydesign;Safetydevices;Safetyofmachinery;Safetyrequirements;Specification(approval);Verification;Workplacesafety
【摘要】:ThispartofISO13849providessafetyrequirementsandguidanceontheprinciplesforthedesignandintegrationofsafety-relatedpartsofcontrolsystems(SRP/CS),includingthedesignofsoftware.ForthesepartsofSRP/CS,itspecifiescharacteristicsthatincludetheperformancelevelrequiredforcarryingoutsafetyfunctions.ItappliestoSRP/CS,regardlessofthetypeoftechnologyandenergyused(electrical,hydraulic,pneumatic,mechanical,etc.),forallkindsofmachinery.Itdoesnotspecifythesafetyfunctionsorperformancelevelsthataretobeusedinaparticularcase.ThispartofISO13849providesspecificrequirementsforSRP/CSusingprogrammableelectronicsystem(s).ItdoesnotgivespecificrequirementsforthedesignofproductswhicharepartsofSRP/CS.Nevertheless,theprinciplesgiven,suchascategoriesorperformancelevels,canbeused.NOTE1ExamplesofproductswhicharepartsofSRP/CS:relays,solenoidvalves,positionswitches,PLCs,motorcontrolunits,two-handcontroldevices,pressuresensitiveequipment.Forthedesignofsuchproducts,itisimportanttorefertothespecificallyapplicableInternationalStandards,e.g.ISO13851,ISO13856-1andISO13856-2.NOTE2Forthedefinitionofrequiredperformancelevel,see3.1.24.NOTE3TherequirementsprovidedinthispartofISO13849forprogrammableelectronicsystemsarecompatiblewiththemethodologyforthedesignanddevelopmentofsafety-relatedelectrical,electronicandprogrammableelectroniccontrolsystemsformachinerygiveninIEC62061.NOTE4Forsafety-relatedembeddedsoftwareforcomponentswithPLr=eseeIEC61508-3:1998,Clause7.NOTE5SeealsoTable1.
【中国标准分类号】:C66
【国际标准分类号】:13_110
【页数】:99P.;A4
【正文语种】:英语
基本信息
| 标准名称： | 未增塑乙酸纤维素含水量的测定 |
| 中标分类： |
化工 >>
合成材料 >>
合成树脂、塑料基础标准与通用方法 |
| 替代情况： | 调整为HG/T 2751-1996 |
| 发布日期： | 1900-01-01 |
| 实施日期： | 1987-10-01 |
| 首发日期： | 1900-01-01 |
| 作废日期： | 1900-01-01 |
| 出版日期： | 1900-01-01 |
| 页数： | 2页 |
适用范围
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前言
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目录
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引用标准
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所属分类： 化工 合成材料 合成树脂 塑料基础标准与通用方法