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ID:59034845
大小:3.44 MB
页数:37页
时间:2020-09-26
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1、ThermalSprayCoatingsofZincandAluminumZincMetallizingPreparedbyJimWeber-SulzerMetco(US)Inc.–Westbury,NYThermalSprayMaterialsDevelopmentSystemsEngineeringEquipmentResearch&DevelopmentFieldServiceManagerTrainingManagerQualityAssuranceManagerCurrentlytheProductLine
2、Managerforindustrialmarkets,focusingoncombustion(wires,powder,&HVOF)andarcequipmentLatestindustryfocus-workingwithNACEInternational(NationalAssociationofCorrosionEngineers)andthepetrochemicalindustrytosolveCorrosionUnderInsulation(CUI)problemswithThermalSprayAlu
3、minum(TSA)coatingsandwiththeGasTechnologyInstitute(GTI)solvingnaturalgastransmissionandmeteringstationcorrosionproblems.InformationAbriefintroductiontothermalsprayedcoatingsareofZn(TSZ),Al(TSA),andtheiralloys(85/15Zn/Al),andhowtheyprovidelongtermcorrosionprotect
4、ionSomeexamplesofwherearethesecoatingsareusedandhowtheyhaveperformedAbriefintroductiontogalvanizinganditscomparisontothermalspraycoatingsAnoverviewofthemostpopulartypesofequipmentthatapplythesecoatingsQuestion&answersessionWhatisThermalSpray?ThermalsprayisNOTawe
5、ldingprocessThermalspraycoatingsareamelted,orsoftenedceramic,metallic,orpolymermaterialsaretransportedbyagasstreamtoaproperlypreparedsubstrateHeatSourceAcceleratedDropletCoatingSubstrateOrMaterialFeedstockWhatisThermalSpray?Thesecoatingsaretypicallymechanicallyb
6、ondedtoagritblastedsurfaceMetalsthatfeedintothethermalspraygunaretheactualcoatings.TherearenosolventsorVOC's.Thecoatingsaresimilartothemetalsbeingsprayed,howevertherearesomeimportantdifferencesTherearemetaloxidestringersandporosityinthecoatingsMetalparticlesinth
7、ecoatingcreatealayeredeffectwithinthecoatingstructureDuetotherapidcoolingofthemetalparticlesastheyadheretothesubstrates,thermalsprayedcoatingshaveuniquecrystallinestructuresnotnormallyfoundinwroughtmetalsAlmostanymaterialcanbethermalsprayedontoalmostanysubstrate
8、WhatisThermalSpray?Thermalspray,especiallywithsoftmetalssprayedwiththecombustionwireequipment,isarelativelycoldprocess.Substratetemperaturesseldomreach>200F/95C.Howth
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