API 4 工业培训
时间:2024-05-18 11:32:25 来源: 标准资料网 作者：标准资料网 阅读：9319
基本信息
| 标准名称： | 工业培训 |
| 中标分类： |
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| 发布日期： | 1900-01-01 |
| 实施日期： | 1900-01-01 |
| 首发日期： | 1900-01-01 |
| 作废日期： | 1900-01-01 |
| 出版日期： | 1900-01-01 |
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：
【英文标准名称】:StandardReferenceRadiographsforSteelCastingsUpto2in.[51mm]inThickness
【原文标准名称】:钢铸件厚度在2in(51mm)及以下用基准射线摄影
【标准号】:ASTME446-1998(2004)e1
【标准状态】:现行
【国别】:
【发布日期】:1998
【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】:E07.02
【标准类型】:(Specification)
【标准水平】:()
【中文主题词】:金相学;铸件;射线摄影;试验;厚度;造船;无损检验;金属;钢
【英文主题词】:castings;discontinuities;gammaray;referenceradiographs;steel;x-ray
【摘要】:1.1Thesereferenceradiographsillustratevarioustypesanddegreesofdiscontinuitiesoccurringinsteelcastingsthathavesectionthicknessesupto2in.[51mm](Note1).Note1-ReferenceradiographspreviouslyusedforthisthicknessrangecarriedthedesignationE71,butincludedanowrarelyusedgammasource,thatis,radium.ThecurrentdocumentisalsoupdatedbyinclusionofseveralrecognizedshrinkageorCcategoriesandbyeliminationofthecrackandhottearcategoriesexceptforoneexampleofeachofthesediscontinuitytypes.ReferenceradiographsforthickersectionsmaybefoundinE186andE280.1.2Thesereferenceillustrationsconsistofthreeseparatesets(Note2)asfollows:(1)mediumvoltage(nominal250-kVp)Xrays.(2)1-MVXraysandIridium-192radiation,and(3)2-MVto4-MVXraysandcobalt-60radiation.Eachsetisforcomparisononlywithradiographsproducedwithequivalentradiation.Itshouldberecognizedthateachenergylevelisnotapplicabletotheentirethicknessrangecoveredbythisdocument.Eachsetconsistsof6categoriesofgradeddiscontinuitiesinincreasingseverityleveland4categoriesofungradeddiscontinuitiesfurnishedasexamplesonly,asfollows:1.2.1CategoryA-Gasporosity;severitylevels1through5.1.2.2CategoryB-Sandandslaginclusions;severitylevels1through5.1.2.3CategoryC-Shrinkage;4types:1.2.3.1CA-Severitylevels1through5.1.2.3.2CB-Severitylevels1through5.1.2.3.3CC-Severitylevels1through5.1.2.3.4CD-Severitylevels1through5.1.2.4CategoryD-Crack;1illustration.1.2.5CategoryE-Hottear;1illustration.1.2.6CategoryF-Insert;1illustration.1.2.7CategoryG-Mottling;1illustration.Note2-Theillustrationsconsistofthefollowing:VolumeI:MediumVoltage(Nominal250kVp)X-RayReferenceRadiographs-Setof34illustrations(5by7in.)ina15by17-in.ringbinder.VolumeII:1-MVXRaysandIridium-192ReferenceRadiographs-Setof34illustrations(5by7in.)ina15by17-in.ringbinder.VolumeIII:2-MVto4-MVXRaysandCobalt-60ReferenceRadiographs-Setof34illustrations(5by7in.)ina15by17-in.ringbinder.Note3-AlthoughCategoryG-Mottlingislistedforallthreevolumes,theappearanceofmottlingisdependentonthelevelofradiationenergy.MottlingappearsreasonablyprominentinVolumeI;however,becauseofthehigherradiationenergylevelsmottlingmaynotbeapparentinVolumeIInorVolumeIII.1.3Thevaluesstatedininch-poundunitsaretoberegardedasthestandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:H26
【国际标准分类号】:
【页数】:3P.;A4
【正文语种】:
【英文标准名称】:Informationtechnology-SmallComputerSystemInterface(SCSI-3)StreamCommands(SSC)
【原文标准名称】:信息技术.SCSI流命令-2(SSC)
【标准号】:ANSIINCITS335-2000
【标准状态】:现行
【国别】:美国
【发布日期】:2000
【实施或试行日期】:
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:ANSI
【标准类型】:()
【标准水平】:()
【中文主题词】:字符集;编码;指令集;指令;信息;信息技术;界面;小型计算机系统接口;流
【英文主题词】:Charactersets;Coding;Commandset;Commands;Information;Informationtechnology;Interfaces;SCSI;Stream
【摘要】:ThisstandarddefinesthecommandsetextensionstofacilitateoperationofSCSIstreamdevices.Theclausesofthisstandard,implementedinconjunctionwiththeapplicableclausesoftheSCSIPrimarycommands-2standard,fullyspecifythestandardcommandsetfortheSCSIstreamdeviceclass.
【中国标准分类号】:L70
【国际标准分类号】:35_040
【页数】:
【正文语种】:英语