简介:液体硅橡胶(LSR)具有独特的物理性能,通过液体硅橡胶注射模设计实例,分析了其注射模设计中应注意的几个问题。
简介:Linearcontractionofgreyironsandcastings;Measurementandminimizationofresidualstressesinironcastings;Microstructurecharacterizationofductilethinwallironcastings;ProcessofManufacturingRiserlessCastingsfromHypereutecticHigh-StrengthIrons;Resources-SavingInoculationofHigh-QualityCastIrons;Thinwallcompactedgraphiteironcastings
简介:ApplicationofCastSimulationforLarge-SizedIronCastings,ApplicationofProtectiveFilmsandPenetrationPreventingPartingPowdersonGreenSandMoldsforIronCastings,Combinedhardeningoftheslidingguidewaysofthemetal-cuttingmachinetools,Computersimulationofvariousmethodsforgreensandfilling,Criticalityoffoundryimperfections,Effectofrapidsolidificationonslidingwearofironcastings.
简介:EffectsofappliedpressureduringfeedingonthefatiguepropertiesofcriticalcastaluminumalloycomponentsanAFS/CMCresearchprojectprogressreport,No.2;Effectsofshotblastingondimensionalvariationofcastings;Eliminatingfish-eyedefectsinductilecastings;Graphiteshapecharacterisationincastiron-fromvisualestimationtofractaldimension;intensificationofgraphitizmgannealinginmalleableironcastingsmanufacture。
简介:面罩主体是供氧面罩中一个十分重要的橡胶件,其形状曲折复杂,厚度变化大,最薄处仅为0.7mm,面罩主体裙围需与人的脸部造型完全吻合。通过对面罩主体的形体分析,在裙边与裙围转接处存在着弓形高“障碍体”,橡胶模便采用了二次分型的方法,使得凸模与凹模及凸模与中模都能够分型,成型面罩主体型腔的中模,是一个大的凸台“障碍体”。面罩主体的脱模,是利用了硅橡胶面罩主体的弹性,采用了手工剥离或吹入压缩空气使其膨胀脱模的形式。在距凹模模腔0.2mm的沿周,制有1.5mm×90°的余胶槽,余胶进入余胶槽中形成飞边,凹槽边缘与型腔边缘所形成的0.20mm刃口,当面罩主体压制后脱模时,飞边能自动被刃口切落。模具结构的形式,实现了面罩主体顺利成型和脱模及飞边的处理。