GB/T 5167-1985 烧结金属材料和硬质合金电阻率的测定
作者:标准资料网 时间:2024-05-21 13:59:20 浏览:9628
来源:标准资料网
基本信息
标准名称: | 烧结金属材料和硬质合金电阻率的测定 |
英文名称: | Sintered metal materials and hardmetals; Determination of electrical resistivity |
中标分类: |
冶金 >>
金属理化性能试验方法 >>
金属物理性能试验方法 |
ICS分类: |
冶金 >>
金属材料试验
|
发布部门: | 国家标准局 |
发布日期: | 1985-05-08 |
实施日期: | 1986-02-01 |
首发日期: | 1985-05-08 |
作废日期: | 1900-01-01 |
主管部门: | 中国有色金属工业协会 |
归口单位: | 全国有色金属标准化技术委员会 |
起草单位: | 中南矿冶学院粉末冶金研究所 |
出版日期: | 1900-01-01 |
页数: | 3页 |
适用范围
本标准规定了烧结金属材料和硬质合金电阻率的测定方法。其中包括两种测量过程。一个测量精度在0.30%以内,适用于材料基本特性的精确测定;一个测量精度较低,适用于工业生产的质量控制。
前言
没有内容
目录
没有内容
引用标准
没有内容
所属分类: 冶金 金属理化性能试验方法 金属物理性能试验方法 冶金 金属材料试验
【英文标准名称】:Explosiveatmospheres.Equipmentprotectionbypressurizedroom"p"
【原文标准名称】:易爆气体环境.增压空间"p"型防护设备
【标准号】:BSEN60079-13-2010
【标准状态】:现行
【国别】:英国
【发布日期】:2011-05-31
【实施或试行日期】:2011-05-31
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:Aeration;Analyzers;Constructionrequirements;Definitions;Design;Electricalengineering;Electricalequipment;Electrically-operateddevices;Equipmentrooms;Explosionprotection;Explosiveatmospheres;Marking;Pressurization;Pressurizing;Protectedelectricalequipment;Safety;Structures;Typeofprotection;Typepprotectedelectricalequipment;Ventilation
【摘要】:ThispartofIEC60079givesrequirementsforthedesign,construction,assessmentandtestingandmarkingofroomsprotectedbypressurizationin:?aroomlocatedinanexplosivegasatmosphereorexplosivedustatmospherehazardousareathatdoesnotincludeaninternalsourceofaflammablesubstance;?aroomlocatedinanexplosivegasatmosphereorexplosivedustatmospherehazardousareathatincludesaninternalsourceofaflammablesubstance;?aroomlocatedinanon-hazardousareathatincludesaninternalsourceofaflammablesubstance.NOTEIfventilationisusedandpressurizationisnotused,thenthispartofIEC60079doesnotapply.ThesituationiscoveredbytherequirementsofIEC60079-10-1.Aroommaybeasingleroom,multiplerooms,acompletebuildingoraroomcontainedwithinabuildingandincludesinletandoutletducts.ThispartofIEC60079alsoincludesrequirementsforassociatedequipment,safetydevicesandcontrolsnecessarytoensurethatpressurizationisestablishedandmaintained.ThispartofIEC60079coversroomsorbuildingsthatareconstructedorassembledonsite,whichmaybeeitheronlandoroff-shore,designedtofacilitatetheentryofpersonnelandprimarilyintendedforinstallationbyanend-userandverificationonsite.Theroommaybelocatedinanexplosivegasatmosphereoraexplosivedustatmosphererequiringequipmentprotectionlevels(EPL)Gb,Db,GcorDc.ThispartofIEC60079doesnotspecifythemethodsthatmayberequiredtoensureadequateairqualityforpersonnelwithregardtotoxicityandtemperaturewithintheroom.NOTE1WhilstthescopeofthispartofIEC60079doesnotaddresstoxicityitisvitalthatproperconsiderationisgiventothisaspecttoensurethesafetyofpersonnel.Nationalregulationsandrequirementsshouldbeobservedinthisregard.NOTE2ThereisarelatedstandardIEC60079-2(Equipmentprotectionbypressurizedenclosure)coveringthedifferentconditionsencounteredwhenusingthepressurizationtechnique.NOTE3MaintenanceneedsarecontainedinAnnexBuntiltheyareincludedIEC60079-17.NOTE4ForthepurposesofthispartofIEC60079,theterms"lowerflammablelimit(LFL)"and"lowerexplosivelimit(LEL)"aredeemedtobesynonymous,andlikewisetheterms"upperflammablelimit(UFL)"and"upperexplosivelimit(UEL)"aredeemedtobesynonymous.Foreaseofreference,thetwoabbreviationsLFLandUFLmaybeusedhereinaftertodenotethesetwosetsofterms.Itshouldberecognizedthatparticularauthoritieshavingjurisdictionmayhaveoverridingrequirementsthatdictatetheuseofoneofthesesetsoftermsandnottheother.ThispartofIEC60079supplementsandmodifiesthegeneralrequirementsofIEC60079-0,exceptasindicatedinTable1.WherearequirementofthisstandardconflictswitharequirementofIEC60079-0,therequirementofthisstandardtakesprecedence.
【中国标准分类号】:
【国际标准分类号】:29_260_20
【页数】:42P.;A4
【正文语种】:英语
【英文标准名称】:Medicalinstruments;raspatories
【原文标准名称】:医疗器械.刮骨刀
【标准号】:DIN58846-1988
【标准状态】:作废
【国别】:德国
【发布日期】:1988-07
【实施或试行日期】:
【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】:尺寸公差;医学科学;骨锉;作标记;手术器械;外科学;医疗器械;材料;形状;公差;尺寸;设计;砝码
【英文主题词】:Design;Dimensionaltolerances;Dimensions;Marking;Materials;Medicalinstruments;Medicalsciences;Raspatories;Shape;Surgery;Surgicalinstruments;Tolerances(measurement);Weights
【摘要】:
【中国标准分类号】:C35
【国际标准分类号】:11_040_30
【页数】:4P.;A4
【正文语种】:德语