欢迎来到人人文库网! | 帮助中心 人人文库renrendoc.com美如初恋!
人人文库网
首页 人人文库网 > 资源分类 > PDF文档下载

Frictional properties of new developed cold work tool steel for high tensile strength steelforming die.pdf

  • 资源大小:1.56MB        全文页数:6页
  • 资源格式: PDF        下载权限:游客/注册会员/VIP会员    下载费用:5
游客快捷下载 游客一键下载
会员登录下载
下载资源需要5

邮箱/手机号:
您支付成功后,系统会自动为您创建此邮箱/手机号的账号,密码跟您输入的邮箱/手机号一致,以方便您下次登录下载和查看订单。注:支付完成后需要自己下载文件,并不会自动发送文件哦!

支付方式: 微信支付    支付宝   
验证码:   换一换

友情提示
2、本站资源不支持迅雷下载,请使用浏览器直接下载(不支持QQ浏览器)
3、本站资源下载后的文档和图纸-无水印,预览文档经过压缩,下载后原文更清晰   

Frictional properties of new developed cold work tool steel for high tensile strength steelforming die.pdf

WEAR27120112884–2889CONTENTSLISTSAVAILABLEATSCIENCEDIRECTWEARJOURNALHOMEPAGEWWWELSEVIERCOM/LOCATE/WEARFRICTIONALPROPERTIESOFNEWDEVELOPEDCOLDSTRENGTHKUNICHIKAASHIMANEBAARTICLERECEIVEDRECEIVEDACCEPTEDAVAILABLEONLINE25JUNE2011KEYWORDSTOOLDIEGALLINGADHESIVESTAMPINGSELFLUBRICATIONSTEELEXPERIMENTALEXCELLENTSKD111THEAPPLICATIONOFHIGHTENSILESTRENGTHSTEELHEREAFTERABBREVIATEDASHTSSISBEINGABRUPTLYINCREASEDTOPRODUCETHEMORERIGIDAUTOMOBILESWITHOUTINCREASINGBODYWEIGHTSINTHEWORLDWIDEAUTOMOBILEINDUSTRYTHISTRENDCOMESFROMTHATAUTOMOBILEMANUFACTURERSTIONTHROUGHDUEASFACTURERSWEAROFMACHINABILITYMENTASTYPEANDMETHODINGRESISTANCEANDMACHINABILITYASWELLASSHOWINGEXCELLENTPERFORMANCEINWIDEVARIOUSAPPLICATIONSSUCHASFORMING,PRESSINGANDOTHERCOLDWORKINGAPPLICATIONSRECENTLY,SMAGICHASBEENACCEPTEDINVARIOUSAPPLICATIONFIELDSOFCOLDFORMINGPROCESSESASSOCALLEDANECOMATERIALANDESPECIALLY,HASANEXCELLENTREPUTA00431648/DOIAREREQUIREDFORHIGHERGLOBALENVIRONMENTPROTECANDIMPROVEMENTOFCOLLISIONSAFETYWHILETHEYSUPPRESSCOSTSIMPROVINGFUELCONSUMPTIONOFAUTOMOBILESHOWEVER,HTSSISMUCHMOREDIFFICULTMATERIALTOBEFORMEDTOHIGHERSTRENGTHCOMPAREDTOCURRENTUSEDMATERIALSSUCHPLAINSTRUCTURALSTEELSTHEABOVEREQUIRESAUTOMOBILEMANUTOGETNEWDIEMATERIALSTOENSUREDURABILITYINTERMSOFRESISTANCEANDSEIZURERESISTANCEFORPRESSFORMINGOPERATIONHTSSMOREOVER,REQUIREMENTFORMOLDSTEELMATERIALSISTOIMPROVEANDEASYHEATTREATMENTANDGOODSURFACETREATACCORDINGTOTHISREQUIREMENT,THECURRENTMATERIALSSUCHCONVENTIONALD2EQUIVALENTTOJISSKD11ANDITSIMPROVEDMATERIALSAREIMPOSSIBLETOATTAINGOODWEARRESISTANCEMACHINABILITYSIMULTANEOUSLY,HOWEVER,THENEWALLOYDESIGNCOULDACCOMPLISHTHEBREAKTHROUGHBASEDON11ALLOYELEMENTSADDITIONSLDMAGICTMHEREAFTERABBREVIATEDAS∗CORRESPONDINGAUTHORTEL810854221919;FAX810854226374EMAILADDRESSKUNICHIKAKUBOTAHITACHIMETALSCOJPKKUBOTATIONINLARGESIZEMOLDSFORAUTOMOBILEBODYINDUSTRIESTHEMETHODOFDEVELOPINGALLOYDESIGNISREPORTEDELSEWHERE13INTHISREPORT,ROLESOFALLOYINGELEMENTSOFNEWLYDEVELOPEDSMAGICAREINVESTIGATEDBASEDONTHESELFLUBRICATIONWITHOUTCOATINGFIG12MATERIALSANDMETHODSAPPLIEDMATERIALSFOREXPERIMENTSARECOLDWORKTOOLSTEELSBASEDONDEVELOPEDSTEELSMAGICTABLE1SHOWSTHECHEMICALCOMPOSITIONOFEACHCOLDWORKTOOLSTEELSFIG2SHOWSTHECALCULATEDPHASEDIAGRAMOFSKD11ANDSMAGICPHASEDIAGRAMOFOTHERCONVENTIONALSTEELSISALMOSTSAMETOSKD11BECAUSEEVENCONVENTIONALSTEELISHIGHCANDHIGHCRONE,THEPHASEDIAGRAMISMORECOMPLEXTHANTHESIMPLEFE–CSTEELBECAUSEOFEXISTENCEOFTWOTYPESOFCARBIDESWHICHAREM7C3ANDM23C6MACHINABILITYHASBEENESTIMATEDBYTWOWAYS;FACEMILLANDENDMILLTESTSMACHINABILITYWITHBOTHMILLINGWEREESTIMATEDBYVERTICALTYPEMACHINECENTERMATSUURABT40SHOWNINFIG2WITHCUTTINGSPEEDOF120AND100M/MINASTME618ISWELLKNOWNASSTANDARDEVALUATIONOFMACHINABILITY,HOWEVER,THESETWOTYPES–SEEFRONTMATTER2011ELSEVIERBVALLRIGHTSRESERVED101016/JWEAR201106007STEELFORMINGDIEKUBOTAA,∗,TAKUYAOHBAB,SHIGEKAZUMORITOMETALLURGICALRESEARCHLABORATORY,HITACHIMETALS,LTD21072YASUGICHO,YASUGISHI,DEPARTMENTOFMATERIALSSCIENCE,SHIMANEUNIVERSITY,1060NISHIKAWATSU,MATSUE,SHIMANERTICLEINFOHISTORY18NOVEMBER2010INREVISEDFORM29APRIL20116JUNE2011STEELSTEELWEARDIEABSTRACTCURRENTLYDEVELOPEDTOOLRESPONDINGTOAISID2TYPEANTIGALLINGPROPERTYTHETIONCOEFFICIENTANDSHOWSANDCOMPAREDWITHTYPICALDEVELOPEDSTEELTHEANTIGALLINGINTRODUCTIONWORKTOOLSTEELFORHIGHTENSILEB6928601,JAPAN6908504,JAPANSLDMAGICTMWASEXAMINEDANDCOMPAREDWITHOTHERSKD11CORTOOLSTEELSFROMTHEVIEWPOINTOFMACHINABILITY,FRICTIONPROPERTYANDRESULTSINDICATEDTHESLDMAGICSHOWSVERYLOWKINETICFRICMACHINABILITYTHEANTIGALLINGPROPERTYOFTHEALLOYWASSTUDIEDANDMODELALLOYSELIMINATINGCHARACTERISTICELEMENTSFROMTHENEWLYPROPERTYOFTHEALLOYWASDISCUSSEDWITHAROLEOFELEMENTSINCLUDED2011ELSEVIERBVALLRIGHTSRESERVEDSMAGICTM,THENAMEOFTHENEWALLOY,CANATTAINBETTERWEARKKUBOTAETAL/WEAR27120112884–28892885DIAGRAMFIGTESTTABLECHEMICALOFMOLDSCUTTINGTIONISWHILEMILLINGCONDITIONTEMPERATURETINGUSEDFIGTESTFIG1CALCULATEDPHASE2DETAILCONDITIONSOFFACEMILLINGTESTANDSCHEMATICDRAWINGOFMACHINING1COMPOSITIONOFTYPICALCOLDWORKTOOLSTEELSINJAPANSMAGICFE–10C–83CR–NI–MO–W–AL–CU–SSKD11FE–15C–120CR–MO–V8CRSTEELFE–10C–83CR–MO–V10CRSTEELFE–12C–10CR–MO–V–SCONDITIONSARESELECTEDBECAUSEMACHININGMETHODSOFDIESANDAREMAINLYINTERMITTENTCUTTINGASCOMPAREDTOCONTINUOUSOFASTME618DETAILSOFFACEMILLINGCONDITIONFOREVALUAOFWORNWIDTHOFTIPWERESUMMARIZEDINFIG2THISCONDITIONSETUPONSEVERSIDEBECAUSECUTTINGVOLUMEMUSTBESUPPRESSEDSAMEDAMAGEMODEISKEPTFIG3SHOWSTHEDETAILSOFENDCONDITIONFORMEASUREMENTOFCUTTINGTEMPERATURETHISISSETUPASFOREASYSIDEOFTEMPERATUREMEASUREMENTOFTHEENDMILLWASMEASUREDATOPPOSITESIDEOFCUTEDGEBYRADIATIONTHERMOMETERTHEFRICTIONTESTS,WHICHWEREFOREVALUATINGTHEANTIGALLINGPROPERTY,WEREPERFORMEDWITH3DETAILCONDITIONSOFENDMILLINGTESTANDSCHEMATICDRAWINGOFMACHININGOFCOLDDIESTEELSFIG4HEATTREATMENTDIAGRAMOFDIESTEELSFORGALLINGTESTCRANKPRESSKOMATSU80TONAFTERTHEHEATTREATMENTSHOWNINFIG4FIG5SHOWSTHEDETAILCONDITIONOFSOCALLEDHATSHAPEDBENDINGMETHOD14ASTHEGALLINGTESTSTROKESPEEDIS40SPM,WRINKLEDEPRESSIONFORCEIS22TON,STROKELENGTHIS60MMWITHOUTLUBRICANTINADDITION,WORKSAREADOPTEDAS590AND980GRADEHTSSOFTHICKNESS16MMWHOSESURFACESTATEARERA004H9262MPOLISHEDBY1000THGRIDSANDPAPERANDWITHOUTZNPLATINGSURFACETEXTUREISMEASUREDBYSURFACEROUGHNESSMEASUREMENTEQUIPMENTTOKYOSEIMITSU,SURFCOMDETERMINATIONOFGALLINGLENGTHAFTERGALLINGTESTISSUMOFLENGTHWHICHSEQUENTIALAMPLITUDEOVER25H9262MEXISTSMEASUREMENT,WHICHISEXECUTED1PATHBYAWORK,ISNEARENDPOINTONWHICHGALLINGISTENDTOOCCURSTRONGLY,ASMENTIONEDBELOWTHEGALLINGRATEISDEFINEDASTHERATIOOFGALLINGLENGTHTOLENGTHMEASUREDSCHEMATICDRAWINGOFBALLONDISKTYPETEST,WHICHWASALSOPERFORMEDWITHFRICTIONTESTINGMACHINEORIENTICCORPORATION,EFMIII1020,SHOWNINFIG6DETAILSCONDITIONSOFTHISEXPERIFIG5SCHEMATICDRAWINGOFHATBENDINGTESTWHICHEVALUATESANTIGALLINGPROPERTIESOFDIESTEELBYHTSSFORMING2886KKUBOTAETAL/WEAR27120112884–2889FIG6SCHEMATICDRAWINGOFBALLONDISKFRICTIONTESTANDDETAILSOFCONDITIONSBOTHOFSURFACEROUGHNESSAREABOUTR02H9262MMENTTOUSEAREATEDETCHEDIS331ABILITYSHOWSINGMOREOVER,SAMECHIPSTHETRIBUTEBYTHISONLYTHATMAGIC,20SIDEREDFIG8RESULTOFTOOLTEMPERATUREMEASUREMENTINTHECASEOFENDMILLINGTESTOFANNEALEDSTATETEMPERATUREJUDGINGFROMTHECOLOROFCHIPS,TEMPERATUREOFSMAGICISABOUT300◦CWHILEOTHERSARENEAR500◦CSATO12ALSOVERIFIEDFORHARDENEDSTATEMACHININGTHATWORNWIDTHOFTIPFORSMAGICISMUCHLESSTHANTHATFORSKD11ANDEDGETEMPERATUREOFSMAGICWASABOUT50◦CLOWERTHANTHATOFSKD11BYSIMILARMEASUREMENTMETHODATHESEAREBASEDONJISSTANDARDR1613WHICHISEQUIVALENTASTMG99,HOWEVER,SELECTIONOFMATERIALISEXECUTEDBYACTUALREFERENCEARESHOWNINFIG6OBSERVATIONOFMICROSTRUCTUREPERFORMEDBYSCANNINGELECTRONMICROCOPYHEREAFTERABBREVIASSEM,HITACHIS3500AFTERTHESPECIMENSAREPOLISHEDANDBYNITALANALYSISOFAVERAGECHEMICALCOMPOSITIONOFSTEELSEXECUTEDBYWETCHEMICALMETHODRESULTSANDDISCUSSIONSMACHINABILITYATANNEALEDCONDITIONFIRST,FACEMILLINGTESTISEXECUTEDINORDERTOEVALUATEMACHINOFEACHCOLDWORKTOOLSTEELSATTHEANNEALEDCONDITIONFIG7THERESULTOFWORNWIDTHOFFACEMILLINGCUTTERAFTERTHETESTWORNWIDTHOFSMAGICISTHELEASTDATUMINALLOFTHESESTEELSWORNWIDTHOF10CRSTEEL,WHICHCONTAINSSULFURASTHEOFSMAGIC,ISTHESECONDLEASTHOWEVER,THECOLOROFCUTOFSMAGICISONLYGOLDWHILEALLOFOTHERSAREBLUE3,4ATVIEWPOINTOFABRASIVEWEAR,AMOUNTOFCARBIDESMAINLYCONWEARPROMOTIONWORSTRESULTOFSKD11MAYBEEXPLAINEDTHISPOINTBECAUSELARGEAMOUNTSOFCANDCRARECONTAINEDINALLOYHOWEVER,EXCELLENCEOFSMAGICCANNOTBEEXPLAINEDBYABRASIVEMODEBECAUSEWORNWIDTHOFSMAGICISLESSTHANOF8CRSTEELINSPITEOFSAMEAMOUNTOFCARBIDESFIG8SHOWSEDGETEMPERATUREDURINGENDMILLINGTESTASFORSEDGETEMPERATUREDURINGENDMILLINGISEXCEPTIONALLYABOUT◦CLOWERTHANTHESEOFOTHERSTEELSFROMTHESERESULTS,ITISCONTHATDIFFERENCEOFCHIPCOLORINDICATESDIFFERENCEOFCUTTINGFIG7RESULTOFWORNTIPWIDTHAFTERFACEMILLINGTESTATANNEALEDSTATE32FRICTIONALPROPERTYUNDERHTSSFORMINGOFACTUALUSEHATSHAPEDBENDINGTESTUSING80TONCRANKPRESSMACHINEISEXECUTEDTOEVALUATEANTIGALLINGPROPERTYFIG9SHOWSTHERESULTOFTHETESTGALLINGISAPHENOMENONTHATGIVESDAMAGETOTHESURFACEOFWORKSHEETBYHARDWELDDEPOSITONTHECORNEROFDIEWHILEWORKSLIDINGTHETENSIONGENERATEDONTHEWORKSHEETISCONTROLLEDBYHOLDINGFORCEINORDERTOSUPPRESSWRINKLEGALLINGDOESNOTOCCURINSMAGICWHILEOTHERDIEMATERIALSOCCURUNDERTHECONDITIONAFTER3TIMESFORMINGTWOKINDSOFHTSSGRADE,590AND980MPA,AREUTILIZEDASWORKFORTHISTESTFIG10SHOWSANEXAMPLEOFSURFACEROUGHNESSMEASUREMENTONTHEDASHLINEINFIG9HERE,THEDEFINITIONOFGALLINGLENGTHISTHESUMOFLENGTHINWHICHAMPLITUDEISOVER25H9262MFIG11SHOWSTHATGALLINGRATEDEFINEDINEXPERIMENTALPROCEDUREINCREASESWITHTHEINCREASEOFWRINKLESUPPRESSIONFORCECRITICALGALLINGFORCEISDEFINEDASTHEWINKLESUPPRESSIONFORCEOFGALLINGRATEACCOMPLISHEDOVER1FIG12SHOWSCRITICALGALLINGFORCEFORDIEMATERIALSANDHTSSGRADEINBOTHCASESOFHTSSGRADE,SMAGICISSUPERIORTOSKD11THISRESULTSUGGESTSTHATFRICTIONFORCEDECREASESINTHECASEOFSMAGICINTHECASEOFSAMEFIG9OPTICALPHOTOGRAPHOFSHEETSURFACEAFTERBENDINGTEST60SPM,15TONWRINKLESUPPRESSIONFORCE,580MPAGRADEHTSSKKUBOTAETAL/WEAR27120112884–28892887FIG10RESULTOFSURFACEROUGHNESSMEASUREMENTOFWORKONTHEDASHLINEINFIG9AFTERGALLINGTESTANDDETERMINATIONOFGALLINGAREAINTHECASEOFSKD11INFIG9FIGMINUTEDIEOFLARGEROFCRITICALHIGHERINGCANMETALLICIFTHEISFIGOF11INFLUENCEOFWRINKLESUPPRESSIONFORCEONGALLINGRATEAT60STROKESPERMATERIAL,CRITICALFORCEOFHIGHERGRADEHTSSISHIGHERTHANTHATLOWERONEINCASEOFHIGHERGRADEWORK,ELASTICREGIONBECOMESANDPLASTICDEFORMATIONBECOMESSMALLERTHUSTHEFORMATIONNASCENTMETALLICSURFACEONWORKSHEETISAVOIDEDANDTHENTHEGALLINGFORCERISESHOWEVER,INTHEACTUALFIELDOFSTAMPING,GRADEWORKISHARDTOBEDEFORMEDBECAUSETHEACTUALFORMFORCEISDETERMINANTFORCEFORTHEANTIGALLINGPROPERTYHERE,ITBECONSIDEREDINFLUENCEOFONLYBOTHFORMATIONRATEOFNASCENTSURFACEANDACTUALFORMINGFORCEONGALLINGPHENOMENON,MANYOTHERCONDITIONSAREREGARDEDASCONSTANTTHEREASONWHYACTUALFORMINGFORCEISDOMINANTFORTHEANTIGALLINGPROPERTYTHATWORKSHAPEMUSTBEKEPTTHESAMESHAPEBYPREVENTING12COMPARATIVERESULTOFDIEMATERIALSANDHTSSGRADESONCRITICALGALLINGVALUEWINKLESUPPRESSINGFORCETHESPRINGBACKAND;THATIS,THEFORMATIONRATEOFNASCENTMETALLICSURFACEISKEPTCONSTANTREGARDLESSTOWORKSTRENGTHWHILEACTUALFORMINGFORCERISESFIG13SHOWSTHEMICROSTRUCTUREOFSMAGICANDSKD11OBSERVEDBYSEMCARBIDESAREINDICATEDBYARROWSFORBOTHFIGURESFIGURESSHOWTHATCARBIDESOFSMAGICAREFINERTHANTHATOFSKD11DISTANCESOFCARBIDESWEREMEASUREDANDAVERAGEDDISTANCESARE38H9262MFORSMAGICAND58H9262MFORSKD11,RESPECTIVELYCONSIDERINGLOWERCARBONCONTEN

注意事项

本文(Frictional properties of new developed cold work tool steel for high tensile strength steelforming die.pdf)为本站会员(英文资料库)主动上传,人人文库网仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对上载内容本身不做任何修改或编辑。 若此文所含内容侵犯了您的版权或隐私,请立即通知人人文库网(发送邮件至[email protected]或直接QQ联系客服),我们立即给予删除!

温馨提示:如果因为网速或其他原因下载失败请重新下载,重复下载不扣分。

关于我们 - 网站声明 - 网站地图 - 资源地图 - 友情链接 - 网站客服客服 - 联系我们

网站客服QQ:2846424093    人人文库上传用户QQ群:460291265   

[email protected] 2016-2018  renrendoc.com 网站版权所有   南天在线技术支持

经营许可证编号:苏ICP备12009002号-5