2ObjectivesIdentify the various components of an oxyfuel gas welding outfit.Describe the function of each component of an gas welding out fit.Cite the maximum safe working pressure used for acetylene.List all the safety equipment that should be worn and used when oxyfuel gas welding in various positions.
3Complete Oxyfuel Outfit Gas SupplyRegulatorsHosesWelding TorchEye ProtectionStriker
15Positive Pressure Type Mixing chamber is located inside the valve bodyRequires high pressure to mix gases
16Injector TypeAcetylene is injected into the oxygen stream using venturi actionMixing chamber creates turbulence to further mix gases
17Welding Tips Solid copper Two different types of tips Do not drop tips One pieceTwo pieceDo not drop tipsDo not try to remove hot tips
18Tip Cleaners Orifice size and shape must be maintained Splatter from base metal may contaminate tipTip cleaners use a round file type cleanerOnly correct size cleaners should be usedTips should be filed off perpendicular to orifice
19Welding Eye Protection The shade used should be dark enough to protect the eyes from annoying glare; yet light enough to permit the welder to see his work.
20Manual Metal Arc:1/16, 3/32, 1/8, 5/32 inch electrodes 103/16, 7/32, 1/4 inch electrodes 125/16, 3/8 inch electrodes 14MIG Welding (nonferrous) 11MIG Welding (ferrous) 12Atomic Hydrogen WeldingTIG WeldingPlasma CuttingCarbon ArcTorch Brazing or 4Light Cutting, up to 1 inch 3 or 4Medium Cutting, up to 1 inch 4 or 5Heavy Cutting, 6 inches and over 5 or 6Gas Welding (Light) up to 1/8 inch 4 or 5Gas Welding (Medium) 1/8 to 1/2 inch 5 or 6Gas Welding (Heavy) 1/2 inch and over 6 or 8
21Other Fuel Gases Hydrogen LP gas Natural gas Methylacetylene propadiene (MAPP)
22Check Valves Only allows gas to flow in one direction Can be at torch inlet regulator outlet or both