SAE J2018 Assessing Technician Training
作者:标准资料网 时间:2024-05-25 21:28:07 浏览:9856
来源:标准资料网
Product Code:SAE J2018
Title:Assessing Technician Training
Issuing Committee:Service Committee
Scope: The scope of this SAE Recommended Practice is to guide the service technician and any organization planning training for the technician in selecting and using training programs. The overall objective is to improve the servicing of automotive vehicles by increasing the abilities of service technicians to troubleshoot, diagnose, repair, and service as required.
【英文标准名称】:StandardTestMethodsforLeakageMeasurementUsingtheMassSpectrometerLeakDetectororResidualGasAnalyzerintheHoodMode
【原文标准名称】:用罩式质谱探漏仪或残余气体分析仪作检漏测量的标准试验方法
【标准号】:ASTME1603-1999(2006)
【标准状态】:现行
【国别】:
【发布日期】:1999
【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】:气体;罩泄漏试验;泄漏测量;质谱探漏仪;残余气体分析仪;罩式残余气体分析仪;使用氦质谱探漏仪;泄漏试验;氦泄漏试验;试验
【英文主题词】:heliumleaktest;heliummassspectrometerleaktest;hoodleaktest;leaktesting;massspectrometerleaktest
【摘要】:TestMethodA8212;Thistestmethodisthemostfrequentlyusedinleaktestingcomponents.Testingofcomponentsiscorrelatedtoastandardleak,andtheactualleakrateismeasured.Acceptanceisbasedonthemaximumsystemallowableleakage.Formostproductionneeds,acceptanceisbasedonacceptanceofpartsleakinglessthananestablishedleakagerate,whichwillensuresafeperformanceovertheprojectedlifeofthecomponent.Caremustbeexercisedtoensurethatlargesystemsarecalibratedwiththestandardleaklocatedatarepresentativeplaceonthetestvolume.Asthevolumetendstobelarge(>1m3)andthereareoftenlowconductancepathsinvolved,acheckoftheresponsetimeaswellassystemsensitivityshouldbemade.TestMethodB8212;Thistestmethodisusedfortestingvacuumsystemseitherasastepinthefinaltestofanewsystemorasamaintenancepracticeonequipmentusedformanufacturing,environmentaltest,orconditioningparts.AswithTestMethodA,theresponsetimeandasystemsensitivitycheckmayberequiredforlargevolumes.TestMethodC8212;ThistestmethodistobeusedonlywhenthereisnoconvenientmethodofconnectingtheLDtotheoutletofthehigh-vacuumpump.IfaheliumLDisusedandthehigh-vacuumpumpisanionpumporcryopump,leaktestingisbestaccomplishedduringtheroughingcycle,asthesepumpsleavearelativelyhighpercentageofheliuminthehigh-vacuumchamber.Thiswilllimitthemaximumsensitivitythatcanbeobtained.1.1Thesetestmethodscoverproceduresfortestingthesourcesofgasleakingattherateof4.41014moles/s(1109standard-cm3/sat0C)orgreater.Thesetestmethodsmaybeconductedonanyobjectthatcanbeevacuatedandtotheothersideofwhichheliumorothertracergasmaybeapplied.Theobjectmustbestructurallycapableofbeingevacuatedtopressuresof0.1Pa(approximately103torr).1.2Threetestmethodsaredescribed;1.2.1TestMethodAFortheobjectundertestcapableofbeingevacuated,buthavingnoinherentpumpingcapability.1.2.2TestMethodBFortheobjectundertestwithintegralpumpingcapability.1.2.3TestMethodCFortheobjectundertestasinTestMethodB,inwhichthevacuumpumpsoftheobjectundertestreplacethosenormallyusedintheleakdetector(LD).1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Thevaluesgiveninbracketsareforinformationonly.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:J04
【国际标准分类号】:
【页数】:5P.;A4
【正文语种】:
