简介：减少形成的负担，springback的删除，象生产高力量一样增加表的formability分开是主要原因使用热踩过程。热踩过程和22MnB5钢分别地是现状过程和等级；然而新奇的过程和钢等级在考虑下面。在当前的研究，在半和充分热的踩过程下面的钢等级MSW1200空白的行为被描绘。在半热的踩的过程期间，空白第一被加热到大约650的温度

简介：Thisstudyexploresreasonsfortherandomoccurrenceofstampingcracksduringtheproductionofpureironmagneticshieldingcovers.Scanningelectronmicroscopyandenergyspectrumareusedtoobservecrackswithinparts,andresultsshowsignificantbrittlefracturemorphologywithchunksofmanganesesilicateandaluminumsilicateinclusionspresentinthefracturesurface.Thechemicalcomposition,mechanicalproperties,andmicrostructurearealsoanalyzedforacorrespondingbatchofcoldrolledpureironsheet.Theoxygencontentofthematerialisfoundtobehigh,resultingintherandomdistributionofalargeamountoflongchainmanganesesilicateandaluminumsilicateinclusionsalongtherollingdirection,whichcorrespondstoinclusionsfoundonthefracturedsurface.Thestampingcracksarethusassumedtobecausedbytherandomlydistributedchainofinclusionswithinthecoldrolledsheet.Itissuggestedthattheamountofdeoxidizerusedshouldbemorecarefullycontrolledtodecreasetheinclusioncontentsandtothusavoidtherecurrenceofsuchdefects.

简介：Themicrostructuralcharacteristicsandformabilityattheedgesoflowcarbonpickledsteelsheetshavebeeninvestigatedbasedonthegenerationofearingandcrackingdefectswhiledrawing.Themicrostructureoftheedgefeaturescoarsegrainsandmixedsizedgrains.Thestrengthofthesheetedgeisslightlylowerthanthatatthecenter.Besides,theformabilityisobviouslyworsened.Theplasticstrainratiosalongthelongitudinalandtransverseorientationsare0.31and0.6,respectively,withdistinctanisotropy.Theplasticstrainratioattheedgeisobviouslylowerthanthatatthemiddleofthesteelsheet.Theobservedmicrostructuralcharacteristicsandmechanicalpropertiesattheedgeofthesteelsheetcanbeattributedtothelowerrollingtemperatureinthetwo-phaseregionofpro-eutectoidferriteandaustenite.Thesedifferencesinmicrostructureandmechanicalpropertiesattheedgeofthesteelsheetleadtothegenerationofearingandcrackingdefectswhiledrawing.Themicrostructureandmechanicalpropertiesattheedgeoflowcarbonpickledsteelsheetscanbeimprovedviatheoptimizationoftherollingprocessandtheadjustmentofchemicalcomposition.

简介：Recrystallizationtextureofsteelplateisaffectedbysubstitutionsolidsolutionandinterstitialsolidsolution.Thisarticlefinishedtexturetestandstampingtestaboutlowcarbonaluminiumkilledsteel,IFsteel,phosphorusstrengthensteel,Si-Mn-Pstrengthensteel.Itcanbefoundthatallkindsofsteelhassimilarintensity{111}textureinpermanentφ=45°aboutlevel10.Interstitialsolidsolutionsteelhad{101}textureandsubstitutionsolidsolutionsteelhad{112}texture.Basedonrecysstallizationprincipleandstampingtest,theeffectofsolutiononrecrystallizationtextureisdiscussed.Itpointoutthatinterstitialsolidsolutionimpediment{111}textureformingandcausedto{101}textureremainedinsteel.Thephenomenonstrengthenanisotropicpropertyandreductionstampingproperty.Similartosubstitutionsolidsolution,itwouldimpediment{111}texturetoo,but{101}texturechangedto{112}texture.

简介：Theoilpanusedinearengineisoneoftheimportantstructurepartsinthecar,whichis,ingeneral,deepdrawnanddifficulttofrom.Thedeep-drawingprocessesoftheoilpanusedintheenginefor'SmallFlag'CaroflheFirstAutomobileManufactoryisanalyzedbyusingtheintegrativeCAD/CAE/CAMtechniqueofstampingdie,ineludingtheCADsoftwareCATIAandthesheet-metalstampingCAEsoftwareKMASdevelopedindependently.ThroughananalysisofdiestructureandformabilityusingtheKMASsoft-ware,theprimarytwi-offdeep-drawinghassuccessfullybeenchangedtotheone-offdeep-drawing,solvingthekeyteehniealdifficultiesforthemanufactory.

简介：Equalchannelangularpressing(ECAP)processingandannealingwereappliedtotheAZ31magnesiumalloysheetstoevaluatethepotentialimprovementinthemechanicalpropertiesandformability.TheECAPexperimentwasconductedat300℃inadiehavinganincludedangleof90obetweentwochannelsbytheBCZroutewiththesheetsrotatedby90°aboutthenormalaxisofplateplane.Thetensiletestsandconicalcuptestswereconductedatvarioustemperaturesfrom20to250℃.Theexperimentalresultsindicatedthatimprovingtheworkingtemperaturescouldleadtothesoftinthematerialandtheenhancementofductility.Comparatively,theECAPedAZ31alloysheetsshowedtheloweryieldstrengthandsmallerconicalcupvalue(CCV)thantheunECAPedcounterpartintheroomtemperature.Thedifferenceinyieldstrengthbetweenthembecamesmallintheelevatedtemperature,buttheECAPedsamplesstillhadthesmallerCCVvalue,implyingtheimprovedformability.ThetextureoftheAZ31alloysheetscouldbemodifiedbyECAPandthedecreaseintheyieldstrengthandmoreuniformdeformationrealizedinthematerial,sotheformabilityofAZ31alloysheetswasimproved.