低压铸造专业英语课件.ppt

《低压铸造专业英语课件.ppt》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、low-pressurecastingTangXingcontent1、Theworkingprincipleoflowpressurecasting2、Theadvantagesoflowpressurecasting3、Thecharacteristicsoflowpressurecasting4、TheprocessfeaturesoflowpressurecastingtopslabMandriltopcasecavityGasketspruecrucibleaircushionguidepillarslidebushi

2、ngDragcompressedairThelowtemperatureliquidmetalrisertube1、Theworkingprincipleoflowpressurecasting2、Theadvantagesoflowpressurecasting1、Liquidmetalfillingsmoothly,andreducetheinclusiondefects；2、Withinthecavityflowandflowdirection,reducethepossibilityoftheappearanceofpo

3、rosity；3、Castingformabilitygood.Liquidmetalintheactionofexternalforce,forceflow,improvethefillingabilityofmetal,whichisbeneficialtotheformingcontourisclear,thesurfaceisbrightandcleancasting；4、Castingcompactstructure,highmechanicalproperties；5、Metalyieldhigh(80%~98%)。

4、Comparedwithpressurecasting1、Qualitynotunderpressurecasting；2、Simpleequipment,lessinvestment,lowproductioncost；3、Canmakelargeparts。3、Thecharacteristicsoflowpressurecasting1、Liquidmetalinundertheactionofpressurefromaboveisfullofcavity,andundertheactionofexternalforcei

5、ncrystallizationsolidification,thefeeding；2、Lowpressurecastingisthefillingprocessandgravitycastingisdifferent,andpressurecastinghavedistinction(pressurecastingforhighthousandsof~tensofthousandsofKN/m2,andlowpressurecastingfor20~60000KN/m2）；4、Theprocessfeaturesoflowpr

6、essurecastingContributetocreatingcastingsequencesetconditionsLowpressurecastingsolidificationprocesswhencastingLowpressurecastingsolidificationprocesswhencastingMortgagecastingagateopenpositionexamplea）correctb）wrong1——sprue2——shrinkageIntheprocessoflowpressurecastin

7、gstagepressurechangereferences：[1]BASTIANKM.ALookBackatthe20thCenturyCastingProcessSimulation.ModernCasting.2000[2]Suhas,V.Patankar,Computationalmoldingofflowandheattransferinindustrialapplications.InternationalJournalofHeatandFluidFlow.2002Thanks