材料成型及控制工程专业（论文）外文翻译

《材料成型及控制工程专业（论文）外文翻译》由会员上传分享，免费在线阅读，更多相关内容在工程资料-天天文库。

1、吉林大学本科毕业设计翻译学生姓名：*****班级：*****班号:*****学院：材料科学与工程学院专业：材料成型及控制工程指导教师：*****副教授2011年3月25日Section4一DieDesignandConstructionGuidelinesforHSSDiesGeneralGuidelinesforDieDesignandConstructionDrawDiesHigherthannormalbinderpressureandpresstonnageisnecessarywithH.S.S.inordertomaintainprocesscontrolandto

2、minimizebucklesonthebinder.Diesmustbedesignedforproperpresstypeandsize.Insomecases,adoubleactionpressorhydraulicpresscushionmayberequiredtoachievethenecessarybinderforcesandcontrol.AircushionsornitrogencylindersmaynotprovidetherequiredforceforsettingofdrawbeadsormaintainingbinderclosureifH.S

3、.S.isofhigherstrengthorthickness.DrawbeadsforH.S.S.shouldnotextendaroundcornersofthedrawdie.Thiswillresultinlockingoutthemetalflowandcausesplittingincornersofstamping.DrawbeadsshouldUrunout"atthetangentofthecornerradiustominimizemetalcompressionincomers,asshowninfigure16onpage47.Bettergrades

4、ofdiematerialmaybenecessarydependingonthecharacteristicsoftheHSS,theseverityofthepartgeometry,andtheproductionvolume.Adrawdiesurfacetreatment,suchaschromeplating,mayberecommendedforouterpanelapplications.FormandFlangeDiesPartsetupinformandflangediesmustallowforproperoverbendonallflangesforsp

5、ringbackcompensation.Springbuckallowancemustbeincreasedasmaterialstrengthincreases;3degreesformildsteels,but6degreesormoreforHSS.Punchradiimustbefairlysharp.Itforlowerstrengthsteels.Higherstrengthsteelsmayrequirelargerradii,butkeepingthemassmallaspracticalwillreducespringbackinthesidewalls.F

6、langesteeldieclearancemustbeheldtonomorethanonemetalthicknessclearancetoreducespringbackandsidewallcurl.Formandflangesteelsshouldbekeyedorpocketedinthecastingtoavoidflexing.Flangesteelsshouldbedesignedtowrapoverandcointheflangebreakinordertosetthebreakandreducespringback.Seefigure17onpage48.

7、Diestrengthmustnotbecompromisedwithlight-weightdieconstruction.Highstrengthsteelwillrequireastifferdietoresistflexingandtheresultantpartdistortions,especiallyforchannelor“hat・sectiorf'parts・Thistypeofpartcanalsocauseseriousdiedamageifdoubleblanksoc