简介:以EM223-16/16-DC.RLY模块元件级的维修实例,阐述了此模块的工作机制,并且通过抄板,将完整的电路图绘制下来,以便各位同行相互学习和交流。
简介:Theslowtensiletests,dynamichydrogenchargingtensiletestsandhydrogenevolutiontestsafterhydrogenchargingwereusedtostudytheeffectsofrareearthmetal(REM)onhydrogenbehaviourinasteel16Mn(St.52).TheratiosofRE/Swerechosenas0,0.7,2.2and7.7,respectively.ItwasshownthatthesteelwithRE/S=2.2givealowerhydrogenembrittlementsusceptibilitythanothers.ThesteelswithoutREMcanadsorbmuchmoreamountofhydrogenthanthatwithREMunderthesamehydrogenchargingconditions.Andtheamountofadsorbedhydrogenfortheforinercanbeevolvedeasierthanthatforthelatteratroomtemperature,50℃and80℃,respectively.Theexperimentalresultswereexplainedbythetraptheoryofhydrogen,theshort-circuitdiffusionpathsintheinterfacesbetweentheelongatedMnSinclusionsandthematrix,andstrongabilityofREMtoadsorbhydrogen.