简介:Anintroductionoftheongoingtechnologyofargon-blowingpurgingplugsinChinawaspresentedinthiswork.Gelpowderswereusedasstartingmaterialstoenhancethehightemperaturemechanicalpropertiesofthepurgingplugs.Compositepurgingplugadoptingextrusionformedgas-purgingbarandslithaditssurfacestructuraldesignimproved,whichenhancedtheresistancestothermalshockandmoltensteelpenetration,prolongingtheservicelife.Inaddition,thesafetywasgreatlyimprovedbyupgradingtheframeworkandproductionprocess,enhancingtheresistancetobreakout.Itisindicatedthatthedevelopingtrendistoproducepurgingplugsoflongerservicelifeandbettergaspurgingratewithdifferentstartingmaterialsandstructuredesignstomeettherequirementsofvariousmetallurgicalprocesses.
简介:EffectofthecontentofLa2O3,CeO2andSiO2onthesinteringbehaviorandmicrostruc-tureofAZS-40materialhasbeenstudiedbymeansofsinteringtestandSEMexamination,TheresultsshowthattheporosityoftheAZS-40clinkerwithadditionof0.5%La2O3orCeO2couldreach2%undertheonditionof1600℃for4hours.Butitisnotbeneficialtothesinteringandmicrostructureoftheclinkerswhentheadditionoftherareearthoxidesincreasestomorethan0.5%,AZS-40materialsbecomedifficulttobesinteredastheadditionofSiO2inthematerialsincereases.