Oxyfuel Equipment富氧燃烧设备.ppt

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1、OxyfuelWeldingEquipmentChapter12ObjectivesIdentifythevariouscomponentsofanoxyfuelgasweldingoutfit.Describethefunctionofeachcomponentofangasweldingoutfit.Citethemaximumsafeworkingpressureusedforacetylene.Listallthesafetyequipmentthatshouldbewornandusedwhenoxyfuelgasweldinginvariouspositions.C

2、ompleteOxyfuelOutfitGasSupplyRegulatorsHosesWeldingTorchEyeProtectionStrikerOxygenSupplyStoredinhighpressurecylinders2000-2640PSIObtainedByAtmosphereElectrolysisOxygen-bearingpelletOxygenCylindersInterstateCommerceCommission(ICC)ForgedinonepieceMustbeatleast¼inchthickHighcarbonsteelCylinderV

3、alvesMadeofbrass“Back-seatingvalve”NeveruseinthepartlyopenedpositionIntegratedpressuresafetydeviceCylindersafetycapAcetyleneCylindersAcetyleneisnotsafeabove15PSICylindersarefilledwithmonolithicfiller85%porosityChargedwithacetoneAbsorbsacetyleneFuseplugsPressureRegulatorsReducehighcylinderpre

4、ssuretoworkingpressureMaintainaconstantworkingpressurePressureGaugesUsuallytwooneachregulatorOneindicatesbottlepressureOneindicateshosepressureHosesHosecolorsRed,green,andblackGreenandBlackOxygenRedAcetyleneTorchTypesPositivepressuretypeInjectortypePositivePressureTypeMixingchamberislocatedi

5、nsidethevalvebodyRequireshighpressuretomixgasesInjectorTypeAcetyleneisinjectedintotheoxygenstreamusingventuriactionMixingchambercreatesturbulencetofurthermixgasesWeldingTipsSolidcopperTwodifferenttypesoftipsOnepieceTwopieceDonotdroptipsDonottrytoremovehottipsTipCleanersOrificesizeandshapemus

6、tbemaintainedSplatterfrombasemetalmaycontaminatetipTipcleanersusearoundfiletypecleanerOnlycorrectsizecleanersshouldbeusedTipsshouldbefiledoffperpendiculartoorificeWeldingEyeProtectionTheshadeusedshouldbedarkenoughtoprotecttheeyesfromannoyingglare;yetlightenoughtopermittheweldertoseehiswork.M

7、anualMetalArc:1/16,3/32,1/8,5/32inchelectrodes103/16,7/32,1/4inchelectrodes125/16,3/8inchelectrodes14MIGWelding(nonferrous)11MIGWelding(ferrous)12AtomicHydrogenWelding10-14TIGWelding12PlasmaCutting14CarbonArc14TorchBrazing3or4LightCutting,upto1inch