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GB/T 16743-1997 冲裁间隙

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基本信息
标准名称:冲裁间隙
英文名称:Blanking clearance
中标分类: 机械 >> 加工工艺 >> 锻压
ICS分类: 机械制造 >> 制造成型过程
替代情况:JB/Z 271-1986;被GB/T 16743-2010代替
发布部门:国家技术监督局
发布日期:1997-03-04
实施日期:1997-09-01
首发日期:1997-03-04
作废日期:2011-02-01
主管部门:中国机械工业联合会
归口单位:全国锻压标准化技术委员会
起草单位:西安交通大学
出版社:中国标准出版社
出版日期:2004-04-11
页数:平装16开, 页数:6, 字数:9千字
书号:155066.1-14032
适用范围

本标准规定了金属材料与非金属材料的冲裁间隙值,以及采用此间隙值时冲裁件可以达到的尺寸精度与剪切面质量水平。本标准适用于板料厚度为10mm以下的金属与非金属材料平板冲压件的普通冲裁。

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所属分类: 机械 加工工艺 锻压 机械制造 制造成型过程
【英文标准名称】:Evaluationandroutinetestinginmedicalimagingdepartments-Part3-2:Acceptancetests-ImagingperformanceofmammographicX-rayequipment
【原文标准名称】:医学成像部门内的评估和例行测试.第3-2部分:验收测试.乳房X光照射设备的成像性能
【标准号】:BSEN61223-3-2-2008
【标准状态】:现行
【国别】:英国
【发布日期】:2008-09-30
【实施或试行日期】:2008-09-30
【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】:验收(鉴定);验收检验;验收试验;钢;;盒式磁带;稳定性试验;交货条件;剂量;电医学;曝光;图象质量;成象;记录单;乳腺X射线摄影术;医疗放射照相术;医学放射学;医学科学;医疗技术学;性能试验;辐射剂量;辐射防护;射线摄影;射线照片;辐射摄影术;辐射学;额定值;评定;警告;危险管理;安全;安全工程;试件;试样;试验;测试;试验条件;测试条件;试验装置;测试装置;外观检查(测试);外观检查(试验);X射线;X射线仪;X射线电子管
【英文主题词】:Acceptance(approval);Acceptanceinspection;Acceptancetests;Automaticexposuresystems;Cassettes;Constancytesting;Deliveryconditions;Dose;Electromedicine;Exposure;Imagequality;Imaging;Logsheets;Mammography;Medicalradiography;Medicalradiology;Medicalsciences;Medicaltechnology;Performancetests;Radiationdose;Radiationprotection;Radiographs;Radiography;Radiology;Ratings;Safety;Safetyengineering;Testpieces;Testspecimens;Testing;Testingconditions;Testingdevices;Visualinspection(testing);X-ray;X-rayapparatus;X-raytubes
【摘要】:ThispartofIEC61223appliestotheeffectivenessofmammographicX-RAYEQUIPMENT,withrespecttoimagequalityanddose,incombinationwithaspectsofEQUIPMENTsafety.ThisstandardappliestomammographicX-RAYEQUIPMENTandMAMMOGRAPHICSTEREOTACTICDEVICES.ThetestsdescribedinthisstandardrequirethequalityandperformanceoftheX-RAYIMAGERECEPTORStobeassuredpriortotheacceptancetestingwhentheyarenotanintegralpartofthemammographicX-RAYEQUIPMENT.ThisincludesRADIOGRAPHICFILMS,INTENSIFYINGSCREENS,RADIOGRAPHICCASSETTES,storagephosphorplatesandASSOCIATEDEQUIPMENTsuchasfilmprocessorsorstoragephosphorplatereaders,IMAGEDISPLAYDEVICESandHARDCOPYCAMERAS.FortestingRADIOGRAPHICCASSETTESandINTENSIFYINGSCREENS,thisstandardmakesreferencetoISO4090.Sensitivityandcontrastforthescreen-filmimagereceptorsareconsideredtobestatedaccordingtoISO9236-3.WhentheresultsoftheACCEPTANCETESTareincompliancewiththeexpectedvalues,thebaselinevaluesforthesubsequentCONSTANCYTESTSareestablished.ThispartofIEC61223definesa)theessentialparameterswhichdescribetheperformanceoftheabove-mentionedmammographicX-RAYEQUIPMENTwithregardtoimagequalityanddose;andb)themethodsoftestingwhethermeasuredquantitiesrelatedtothoseparameterscomplywithspecifiedtolerances.Thesemethodsmainlyrelyonnon-invasivemeasurementsthatuseappropriatetestEQUIPMENTandareperformedduringoraftertheinstallation.SignedstatementscoveringstepsintheinstallationprocedurecanbeusedaspartoftheACCEPTANCETEST.Testsrequiredbyahigherlevelofcompliancetakeprecedenceoversimilartestswithalowerlevelofcompliance.Thisconceptisdescribedin4.1.Thisstandarddoesnotinitselfspecifylimitingvaluesortolerancesfortheparametersunderinvestigation.Adifficultymayarisewithregardtotheresponsibilityforacceptancetestingwhenthefilm/screencombination,filmprocessingchemistryorcomputedradiographysystemischanged.Thisarisesfromacombinationofcauses.Firstly,theimagereceptorMANUFACTURERandtheX-RAYEQUIPMENTMANUFACTURERmaybedifferent.Secondlyachangeinimagereceptororfilmprocessingchemistrymayalterthesystemperformance.Whensystemintegrationsuchastheaboveoccurs,itisimportantthatacceptancetestingisperformed.Whenachangeoccurswhichcouldaltersystemperformance,itisessentialthatthesystemintegrator(i.e.whoeverisresponsibleforthischange)discussestheimplicationoftheirchangewiththeX-RAYEQUIPMENTMANUFACTURERsothatthelattercanadjusttheimagingsystemifnecessary.
【中国标准分类号】:C43
【国际标准分类号】:11_040_50
【页数】:66P.;A4
【正文语种】:英语


【英文标准名称】:Safetyrulesfortheconstructionandinstallationoflifts-Particularapplicationsforpassengerandgoodspassengerlifts-Firefighterslifts
【原文标准名称】:升降机建造和安装的安全规程.载人和载货升降机用特殊应用装置.消防用升降机
【标准号】:BSEN81-72-2003
【标准状态】:现行
【国别】:英国
【发布日期】:2003-07-22
【实施或试行日期】:2003-07-22
【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】:通信系统;控制系统;定义;定义(术语);消防队的调度;设计;消防队;防火安全性;火灾队列行进;消防;危害;提升机;电梯;安装;操作规程;载人升降机;保护措施;营救供应;安全性;安全装置;安全性工程;安全措施;安全性要求;货梯;摩天楼;规范(验收)
【英文主题词】:Communicationsystems;Controlsystems;Definition;Definitions;Deploymentsoffirebrigades;Design;Firebrigade;Firesafety;Fire-brigadeprocession;Firefighting;Hazards;Hoists;Lift-car;Mounting;Operatinginstructions;Passengerhoists;Protectivemeasures;Rescueprovisions;Safety;Safetydevices;Safetyengineering;Safetymeasures;Safetyrequirements;Servicelifts;Skyscrapers;Specification(approval)
【摘要】:1Thisstandardappliestofirefightersliftsasdefinedinclause3.5equippedwithafireprotectedlobby.2Thisstandardisnotapplicableto:—double-decklifts;—liftsinstalledinexistingbuildings;—importantmodificationtoexistingliftinstalledbeforethepublicationofthisstandard;—dualentrylifts,wheretheprotectedfirefightersliftprotectedlobbiesarenotlocatedonthesamesideasthatofthefireserviceaccesslevel.However,thisstandardmayusefullybeusedasabasis.3Thisstandarddealswiththesignificanthazards,hazardoussituationsandeventsrelevanttofirefighterslifts(aslistedinclause4)whentheyareusedasintendedandundertheconditionsasforeseenbytheinstaller.4ThisdocumentisapplicabletonewfirefightersliftsinnewbuildingswhichareinstalledafterthedateofpublicationofthisdocumentbyCEN.5ThisstandardgivestheadditionalordeviatingrequirementstoEN81-1and2andprEN81-5,6and7whichshallbeavailableforliftswhichmaybeusedforfirefightingandevacuationpurposesunderfirefighterscontrol.InallotherrespectssuchliftsaredesignedinaccordancewithEN81-1and2andprEN81-5,6and7whereapplicable.6Thisstandarddoesnotconsidertheuseofliftswithpartiallyenclosedwellsforuseasfirefighterslifts.7Thisstandardceasestoapplyifthefireeventuallybreaksintoafireprotectedlobby(seeannexA,FigureA.2).NOTEAfirefightingconceptisgiveninannexA.
【中国标准分类号】:Q78
【国际标准分类号】:91_140_90
【页数】:34P;A4
【正文语种】:英语