DIN 28601-1-1976 煤气管道和供水管道用可锻铸铁压力管和异型件.螺纹套管接头.总成.套筒.螺丝环
时间:2024-05-17 04:41:44 来源: 标准资料网 作者：标准资料网 阅读：8810
【英文标准名称】:Ductilecastironpipesandspecialcastingsforpressuremainlines;screwed-glandflexiblejoint,assembly,sockets,screw-rings
【原文标准名称】:煤气管道和供水管道用可锻铸铁压力管和异型件.螺纹套管接头.总成.套筒.螺丝环
【标准号】:DIN28601-1-1976
【标准状态】:作废
【国别】:德国
【发布日期】:1976-03
【实施或试行日期】:
【发布单位】:德国标准化学会(DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:燃气管路;配件;铸铁;压力管;公差;管联接器;定义;联接套筒(管子);砝码;材料;设计;输水管道;套筒连接;尺寸;轴承环;密封环
【英文主题词】:cast-iron;gascircuits;weights;couplingsleeves(pipes);pressurepipes;waterpipelines;pipecouplings;materials;tolerances(measurement);dimensions;definitions;design;sleevejoints;fittings;bearingri
【摘要】:
【中国标准分类号】:Q82;Q81
【国际标准分类号】:23_040_60
【页数】:3P;A4
【正文语种】:德语
【英文标准名称】:StandardTestMethodsforLeaksUsingtheMassSpectrometerLeakDetectororResidualGasAnalyzerintheTracerProbeMode
【原文标准名称】:在示踪探针法中用质谱仪检漏器或残余气体分析器作泄漏检验的测试方法
【标准号】:ASTME498-1995(2006)
【标准状态】:现行
【国别】:
【发布日期】:1995
【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】:E07.08
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:试验;检漏器;不渗透性;泄漏;无损检验;示踪法;质谱仪;残余气体
【英文主题词】:belljarleaktest;bombmassspectrometerleaktest;heliumleadtesting;heliumleaktest;leaktesting;massspectrometerleaktesting;sealedobjectmassspectrometerleaktest
【摘要】:TestMethodAisthemostfrequentlyusedinleaktestingcomponentswhicharestructurallycapableofbeingevacuatedtopressuresof0.1Pa(approximately10x2212;3torr).Testingofsmallcomponentscanbecorrelatedtocalibratedleaks,andtheactualleakratecanbemeasuredoracceptancecanbebasedonamaximumallowableleak.Formostproductionneedsacceptanceisbasedonacceptanceofpartsleakinglessthananestablishedstandardwhichwillensuresafeperformanceovertheprojectedlifeofthecomponent.Caremustbeexercisedtoensurethatlargesystemsarecalibratedwithreferenceleakatarepresentativeplaceonthetestvolume.Leakratesaredeterminedbycalculatingthenetgainorlossthroughaleakinthetestpartthatwouldcausefailureduringtheexpectedlifeofthedevice.TestMethodBisusedfortestingvacuumsystemseitherasastepinthefinaltestofanewsystemorasamaintenancepracticeonequipmentusedformanufacturing,environmentaltestorforconditioningparts.Asthevolumetendstobelarge,acheckoftheresponsetimeaswellassystemsensitivityshouldbemade.VolumeofthesysteminlitersdividedbythespeedofthevacuumpumpinL/swillgivetheresponsetimetoreach63%ofthetotalsignal.Responsetimesinexcessofafewsecondsmakesleakdetectiondifficult.TestMethodCistobeusedonlywhenthereisnoconvenientmethodofconnectingtheleakdetectortotheoutletofthehighvacuumpump.Ifaheliumleakdetectorisusedandthehighvacuumpumpisanionpumporcryopump,leaktestingisbestaccomplishedduringtheroughingcycleasthesepumpsleavearelativelyhighpercentageofheliuminthehighvacuumchamber.Thiswillobscureallbutlargeleaks,andthetracegaswillquicklysaturatethepumps.1.1Thesetestmethodscoverproceduresfortestingandlocatingthesourcesofgasleakingattherateof4.51014mol/s(1109Stdcm3/s)orgreater.Thetestmaybeconductedonanyobjecttobetestedthatcanbeevacuatedandtotheothersideofwhichheliumorothertracergasmaybeapplied.1.2Threetestmethodsaredescribed:1.2.1TestMethodA-Fortheobjectundertestcapableofbeingevacuated,buthavingnoinherentpumpingcapability.1.2.2TestMethodB-Fortheobjectundertestwithintegralpumpingcapability.1.2.3TestMethodC-FortheobjectundertestasinTestMethodB,inwhichthevacuumpumpsoftheobjectundertestreplacethosenormallyusedintheleakdetector.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Aspecifichazardstatementcanbefoundin.
【中国标准分类号】:H26
【国际标准分类号】:19_100
【页数】:4P.;A4
【正文语种】:
【英文标准名称】:Sparepartboxesformarineuse
【原文标准名称】:船用备品箱
【标准号】:JISF0902-1978
【标准状态】:作废
【国别】:日本
【发布日期】:1978-02-01
【实施或试行日期】:1978-02-01
【发布单位】:日本工业标准调查会(JISC)
【起草单位】:TechnicalCommitteeonShips
【标准类型】:()
【标准水平】:()
【中文主题词】:箱;备件;海船
【英文主题词】:spareparts;boxes
【摘要】:
【中国标准分类号】:U01
【国际标准分类号】:47_020_50
【页数】:4P;A4
【正文语种】:日语