SAE J765 Crane Load Stability Test Code
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来源:标准资料网
Product Code:SAE J765
Title:Crane Load Stability Test Code
Issuing Committee:Cranes And Lifting Devices Committee
Scope:This SAE Standard may be used for all revolving cranes wherein the capacity of the crane to support loads is based on its resistance to overturning. it is not applicable to cranes wherein the capacity of the crane is based on structural strength or available hoisting power.The purpose of this test is to determine the maximum capacity of a crane to counterbalance loads applied on its hook block. The capacity of the crane is reported in terms of the load in kilograms (pounds) and its corresponding radius in meters (feet) for a specified position of the upperstructure with respect to the mounting.
【英文标准名称】:StandardTestMethodforSolderabilityofMetallic-CoatedProducts
【原文标准名称】:金属涂覆产品的软钎焊性试验方法
【标准号】:ASTMB678-1986(2011)
【标准状态】:现行
【国别】:
【发布日期】:1986
【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】:B08.10
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:Inorderthatasoundsolderjointbeformedsimplyandquicklyinaproductionoperation,themoltensoldermustreadilywetandspreadoverthesurfacesoftheproductsbeingjoined.Forthistohappen,thesurfacesmustbecleanorbesoiledonlywithcontaminantsthatareeasilyremovedbyanappropriateflux.Itoftenisnecessarythatthefluxbeonlystrongenoughtoremovethenormallyoccurringsoils.Amoreaggressivefluxmaycorrodetheproductandhaveotherharmfuleffects.Nonactivatedrosininalcoholisthestandardfluxusedinthistestmethod;however,provisionismadefortheuseofotherfluxes.Sincerosinisamildflux,itprovidesbetterdiscriminationbetweenacceptableandunacceptablesolderabilityinmarginalcasesthandomoreactivefluxes.Metalliccoatingsarefrequentlyusedtoprovidesolderablesurfaces.But,animproperlyproducedcoatingmaynotyieldtherequiredsolderability.Therearemanycoatingdefectsthatcausepoorsolderabilityincludingporosity,codepositedimpurities,incorrectthickness,andsurfacecontamination.Itmaybedifficultorimpracticaltotestacoatingdirectlyforeachoftheundesirableconditions.Intheseinstancessolderabilityistested.Productsthatpassthesolderabilitytestcanbeexpectedtosoldersatisfactorilyinproduction.Inthecaseoffailuretopassthetest,thetestresultswillnotrevealthecauseoftheinadequatesolderability,though,withexperience,anoperatormaybeabletoidentifythecause.Thistestmethodmeasurestheabilityofacoatedproducttobesolderedwith60/40tin/leadsolderusinganonactivatedrosinflux.Thissolderandthisflux,oranactivatedformofit,aregenerallyusedintheassemblyofelectronicproducts.Itisintendedthatthetestedspecimensbecomponentsofelectronicproductsorarticleswiththesamegeneralshapeandmass.Articlesthataremuchmoremassivethanthiswillheatuptooslowlyduringthesolderimmersion.Ifmoremassivespecimensaretobetested,alongerimmersiontimewillhavetobeused,thetimetobedeterminedbyexperiment.Ifthespecimentestedislongerthan25mm,itsbottomendwillbeinthesolderforsignificantlylongerthanthespecifiedtime.Therefore,ifthespecimenislongerthan25mm,theresultsobtainedatthebottomendofthespecimenareinvalid.Thispartofthespecimenshallbediscountedintheevaluationoftheresults.Asecondsetoftestscanberunonadditionalspecimensinwhichthespecimensareonlypartlyimmersed.Thesewouldbeusedtoevaluatethebottomends.1.1Thistestmethodprovidesaprocedureforevaluatingthesolderabilityofmetallic-coatedproductsandtestspecimenstoassuresatisfactoryperformanceinmanufacturingprocessesrequiringsolderingwithsoft(tin-lead)solderandrosinflux.Thistestmethodisapplicableonlyfortestingcoatingsthatarenormallyreadilysolderablesuchas:tin,tin-leadalloy,silver,andgold.1.2Thistestmethodisqualitativeandbroadlyapplicable.Itiseasytoperformandrequiresonlysimpleequipment.Thereareothersolderabilitytestsnotcoveredbythistestmethodthataremoreapplicabletospecificsituations,yieldquantitativeresults,orboth.Severalaredescribedintheliterature.Thisisax201C;go-no-gox201D;testanddoesnotgradesolderabilityasexcellent,good,fair,andsoforth.1.3Thisstandardmayinvolvehazardousmaterials,operations,andequipment.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:
【国际标准分类号】:25_160_50
【页数】:3P.;A4
【正文语种】:
【英文标准名称】:Dynamicmodules-Part6-5:Investigationofoperatingmechanicalshockandvibrationtestsfordynamicmodules
【原文标准名称】:动态模块.第6-5部分:动态模块用操作机械冲击和振动试验的调查
【标准号】:IEC/TR62343-6-5-2011
【标准状态】:现行
【国别】:国际
【发布日期】:2011-01
【实施或试行日期】:2011-01
【发布单位】:国际电工委员会(IX-IEC)
【起草单位】:IEC/SC86C
【标准类型】:()
【标准水平】:()
【中文主题词】:连接工艺;动态的;电气工程;电子设备及元件;紧固件;光纤;冲击试验;测量;测量技术;机械性能;机械测试;模数;光波导;光电子器件;性能;工作性能;冲击;模拟;试验;振动试验
【英文主题词】:Connectiontechnology;Dynamic;Electricalengineering;Electronicequipmentandcomponents;Fasteners;Fibreoptics;Impacttests;Measurement;Measuringtechniques;Mechanicalproperties;Mechanicaltesting;Modules;Opticalwaveguides;Optoelectronicdevices;Performance;Performanceinservice;Shock;Simulation;Testing;Vibrationtests
【摘要】:ThispartofIEC62343,whichisatechnicalreport,explainsaninvestigationofoperatingmechanicalshockandavibrationtestfordynamicmodules.Italsodescribestheresultsofasurvey,evaluationandmechanicalsimulationofmechanicalshockandvibrationtesting.Thisreportcoversastudyofstandardizationforoperatingmechanicalshockandvibrationtestmethods.
【中国标准分类号】:Z32;M33
【国际标准分类号】:33_180_20;33_180_30
【页数】:24P.;A4
【正文语种】:英语
