4、d casting,thepaperwhichcombines“lostfoamcastingprecisionfoammolding”,“shellcastingtechnology”andanumberofprecisioncasting technologydevelopesthe aluminumalloyvanishingmouldcastingnew technologyfortheproductionofhigh quality large complexthin-walledaluminumalloy castings.Therearemanyadvantages:fle
5、xiblefoamstructuredesign,stabledimension,lowshrinkage,lowcostanditcanproducelargeandcomplexcompactcastings;Beforepouringoffthefoam,itcanavoidcastingcockle,inclusionsandotherdefectsappearingeasily;Castinghasprecisequalityanditovercomestheshortageandhighcostforlargecasting.Throughtheanalysisofthe a