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SJ 2507-1984 紧固件 铆装圆螺母

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基本信息
标准名称:紧固件 铆装圆螺母
英文名称:Square nuts for riveted joint
中标分类: 机械 >> 机械综合 >> 技术管理
替代情况:SJ 744-1973
发布日期:1984-09-04
实施日期:1985-03-01
首发日期:1900-01-01
作废日期:1900-01-01
出版日期:1900-01-01
页数:3页
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所属分类: 机械 机械综合 技术管理
【英文标准名称】:StandardPracticeforDesigningaProcessforCleaningTechnicalGlasses
【原文标准名称】:设计玻璃清洗方法的标准实施规程
【标准号】:ASTMC912-1993(2003)
【标准状态】:现行
【国别】:
【发布日期】:1993
【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】:C14.02
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:玻璃;清洁处理;工艺
【英文主题词】:cleaning;glass;solubility;solvents;technical;
【摘要】:Manyofthelow-silicatechnicalglasseswhichcontainsolubleorreactiveoxidesrequireprocessingorinvolveapplicationsthatrequirecleaning.Veryoftenthesecleaningprocedureshaveevolvedoverseveraldecadesandareconsideredanart.Theyusuallycontainnumeroussteps,someofquestionablevalidity.Itisthepremiseofthispracticethatcleaningglasscanbemorescientific.Designofacleaningprocedureshouldinvolve(1)adefinitionofthesoiltoberemoved,(2)anawarenessoftheconstraintsimposedbytheglasscomposition,and(3)arationalselectionofalternativemethodsthatwillremovethesoilandleavetheglassinaconditionsuitableforitsintendedapplication.Thispracticeprovidesinformationtoassistinstep(3).Generalreferencesonglasscleaningandonvariousmethodsofevaluatingcleanlinessandassociatedinformationhasbeenpublished.21.1Thispracticeisintendedtoprovideinformationthatwillpermitdesignofarationalcleaningprocedurethatcanbeusedwithaglassthatissomewhatsolubleinmanyaqueouschemicalsolutions.Typically,thistypeofglassisusedinapplicationssuchasopticalware,glass-to-metalseals,lowdielectriclossproducts,glassfibers,infraredtransmittingproducts,andproductsresistanttometallicvapors.1.2Inmostcases,thistypeofglasscontainshighconcentrationsofoxidesthattendtoreactwithanumberofaqueouschemicals.SuchoxidesincludeB2O3,Al2O3,R2,RO,La2O3,ZnO,PbO,P2O5,andFe2O3.Themoreconventionalhigh-silicaglassesareusuallymorechemicallyresistant,butthecleaningprinciplesoutlinedherealsoapplytothem.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.SpecifichazardstatementsaregiveninSection4andTable1.
【中国标准分类号】:Q34
【国际标准分类号】:81_040_01
【页数】:6P.;A4
【正文语种】:


【英文标准名称】:Low-voltageswitchgearandcontrolgear-Part4-1:Contactorsandmotor-starters;Electromechanicalcontactorsandmotorstarters
【原文标准名称】:低压开关设备和控制设备.第4-1部分:接触器和电动机起动器.机电式接触器和电动机起动器
【标准号】:IEC60947-4-1Corrigendum1-2001
【标准状态】:作废
【国别】:国际
【发布日期】:2001-07
【实施或试行日期】:
【发布单位】:国际电工委员会(IX-IEC)
【起草单位】:IEC/SC17B
【标准类型】:()
【标准水平】:()
【中文主题词】:机电装置;控制装置;低电压;过载保护装置;电起动器;低压电器;文字书写;电子工程;开关能力;分类;操作说明书;产品信息;接触继电器;辅助接触器;起动器;安装说明书;短路保护;使用说明;电动机起动器;接触器;低压开关设备;分类系统;定义;试验;规范(验收);电气工程;特性;特性;电动机;开关设备;转换能量;检验;作标记
【英文主题词】:Abilitytoswitch;Applications;Auxiliarycontactors;Characteristics;Classification;Classificationsystems;Contactorrelays;Contactors;Contactorsformotors;Controldevices;Criterion;Definitions;Degreeofsharpness;Electricmotors;Electricstarters;Electricalengineering;Electromagneticcompatibility;Electromechanical;Electromechanicaldevices;Electronic;Electronicengineering;EMC;Frequencies;Handlings;Inscription;Inserts;Inspection;Installations;Instructionsforuse;Interferencerejections;Interferingemissions;Letterings;Lowvoltage;Low-voltageequipment;Low-voltageswitchgear;Maintenance;Marking;Miscellaneousfunctions;Motorstarters;Operatinginstructions;Operation;Overloadprotection;Overloadrelays;Productinformation;Properties;Radiation;Set-upinstructions;Short-circuitprotection;Shutdown;Specification(approval);Starters;Switchgear;Switchgears;Switchingpower;Take-off;Testing
【摘要】:ThisstandardisLow-voltageswitchgearandcontrolgear-Part4-1:Contactorsandmotor-starters;Electromechanicalcontactorsandmotorstarters;Corrigendum1
【中国标准分类号】:K31
【国际标准分类号】:29_130_20
【页数】:
【正文语种】:英语