H型鋼(20MnSiV)軋后余熱處理實驗研究及有限元分析.pdf

1、東北大學碩士學位論文H型鋼(20MnSiV)軋后余熱處理實驗研究及有限元分析姓名：孫嶺申請學位級別：碩士專業(yè)：材料加工指導教師：吳迪2000.3.1tAbstractBecaus@ofmoreandmorestrictdemaixisonrolledH—be啪111architecture，theHbeammanufactoriesmakeeffortstOincreasethecompetitivenessofproductswhic

2、hincorporatefavorableintegrated、uiliforlnmechanicalpropertiesovertheircrosssectionandhighstrengthTheH—beamsurplusheatquenchingtre卸【InemisanonlineheattreatmentwhichutilizestherollingheatforquenchingandselftemperingThesurp

3、lusheatquenchingtreatmentwillsignificantlybeexpandedinthefuttⅡebecauseofitsimprovementsinthestrengthoftheHbeamwithfavorableintegratedmechanicalpropertiesanditscostsavingHbeamsurplusheatquenchingtreatmentdevelopedslowlybe

4、causeofcomplicationofthequenchingcoolingThe20MnSWsteelhasyieldstrengthof500MPaorirtoreafteritwastreatedforsurplusheatquenchingThestudyofthe20MnSiVHheamsurplusheatquenchingtreatmenthasgreatpracticalityandsignificanceThree

5、problemsaboutH—beamsurplusheatquenchingtreatmentwefestudiedinthis牟慨whichincludeselectivecoolingoftheflangeandweb、theinfluenceofflangewebtransitionhightew驢raturezoneandmechanicalpropertiesoftheHbeamTestWaScompletedinlabor

6、atoryconditionThematerialofspecimenswas20MnSiVandcarbonequivalentislessthan05％Firstlythemecl砌icalpropertiesofsIx，cimenswerestudiedwithplatetypeforsurplusheatquenchingtreatmentAccordingtotheexperimentalresults，goodintegra

7、tedmechanicalpropertieswasobta砒ifsurfacetempertemperatureofplatespecimenswithdifferemthicknessisabout600“CSecondlytheexperimentofquenchingandselftemperingalterrollingwasstudiedforH100mmHbeamItwaspointedoutthat20MnSiVstea