[教程]模具抛光的技术和技巧

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1、［教程］模具抛光的技术和技巧Withthewidespreaduseofplasticproducts,suchasdailynecessitiesandbeveragepackagingcontainers,theappearanceofplasticmoldcavitiesoftenrequiresthemirrorsurfacetobepolished・Andtheproductionofopticallenses,laserdiscsandothermoldsonthesurfaceroughnessrequirementsextremelyhigh,sothe

2、polishingrequirementsarealsoveryhigh・Polishingnotonlyincreasesthebeautyoftheworkpiece,butalsocanimprovethecorrosionresistanceofthematerialsurface,wearresistance,butalsomakethemoldhasotheradvantages,suchasplasticproductseasytorelease,reducetheproductioncycleofinjectionmolding・Therefore,po

3、lishingisaveryimportantprocessinthemanufactureofplasticmoulds・1polishingmethodAtpresent,thecommonlyusedpolishingmethodsareasfollows:1.1mechanicalpolishingMechanicalpolishingbycutting,surfaceplasticdeformationwasremovedafterpolishingandconvexsmoothsurfacepolishingmethod,thegeneraluseofoil

4、stone,woolwheel,sandpaper,mainlymanual,specialpartssuchasrotarytablesurface,canuseauxiliarytoolssuchashighsurfacequalityrequirementscanbeusedmethodultraprecisionpolishing・Superprecisionlappingismadeofspecialabrasivetools,whicharetightlypressedonthemachinedsurfaceoftheworkpieceandrotateat

5、highspeed・Withthistechnique,thesurfaceroughnessofRaO.008mumcanbeachieved,whichisthehighestamongvariouspolishingmethods・Opticallensmoldsareoftenusedinthisway.1.1chemicalpolishingChemicalpolishingistomakethematerialinthechemicalmediumsurfacemicroprotrudingpart,concavepartofprioritydissolve

6、d,soastoobtainsmoothsurface・Themainadvantageofthismethodisthatthecomplexpartscanbepolishedwithoutcomplicatedequipment,andmanyworkpiecescanbepolishedatthesametime,andtheefficiencyishigh・Thekeyproblemofchemicalpolishingisthepreparationofpolishingliquid・Thesurfaceroughnessobtainedbychemical

7、polishingisusually10mum.1.2electrolyticpolishingThebasicprincipleofelectropolishingisthesameasthatofchemicalpolishing,i・e.,thesurfaceofthematerialissmoothedbyselectivedissolutionofthesurfaceofthemateria1.Comparedwithchemicalpolishing,theeffectofcathodicreactioncanbeelimin