1. 1 Copyright  2004 Lincoln Global Inc. Oxyfuel Gas Welding & Cutting OFW&OFC

2. 2 Copyright  2004 Lincoln Global Inc. What is OFW? OFW = Oxygen Fuel Gas Welding Requires Fuel Gas & OxygenRequires Fuel Gas & Oxygen Uses Tanks, Regulators, Hoses, and TorchesUses Tanks, Regulators, Hoses, and Torches Requires Peripheral EquipmentRequires Peripheral Equipment (i.e., Mask, Flint Lighter, Tank Wrench, and Tip Cleaners)(i.e., Mask, Flint Lighter, Tank Wrench, and Tip Cleaners)

3. 3 Copyright  2004 Lincoln Global Inc. Bead without Filler Metal Bead with Filler Metal Oxyfuel Gas Welding A group of welding processes that produces coalescence of that produces coalescence of workpieces by heating them with an oxyfuel gas flame. The processes are used with or without the application of pressure and with or without filler metal.

4. 4 Copyright  2004 Lincoln Global Inc. Advantages Low Cost EquipmentLow Cost Equipment No Electricity RequiredNo Electricity Required All Position WeldingAll Position Welding Extremely PortableExtremely Portable

5. 5 Copyright  2004 Lincoln Global Inc. Advantages Variety of ThicknessVariety of Thickness No SlagNo Slag No SpatterNo Spatter High Quality WeldsHigh Quality Welds

6. 6 Copyright  2004 Lincoln Global Inc. Limitations Of OFW Primarily Ferrous MaterialsPrimarily Ferrous Materials Must Operate under “Hot Zone” ConceptMust Operate under “Hot Zone” Concept (Fire Hazard)(Fire Hazard) Various Hazards Associated with Fuel Gases, Oxygen and High Pressure GasesVarious Hazards Associated with Fuel Gases, Oxygen and High Pressure Gases

7. 7 Copyright  2004 Lincoln Global Inc. Limitations Of OFW Flashbacks & BackfiresFlashbacks & Backfires Often SlowOften Slow Cannot Weld with All Fuel GasesCannot Weld with All Fuel Gases

8. 8 Copyright  2004 Lincoln Global Inc. What is OFC? OFC = Oxygen Fuel Gas Cutting Requires Fuel Gas & OxygenRequires Fuel Gas & Oxygen Uses Tanks, Regulators, Hoses,and TorchesUses Tanks, Regulators, Hoses,and Torches Requires Peripheral EquipmentRequires Peripheral Equipment (i.e., Mask, Flint Lighter, Tank Wrench, and Tip Cleaners)(i.e., Mask, Flint Lighter, Tank Wrench, and Tip Cleaners)

9. 9 Copyright  2004 Lincoln Global Inc. OxyFuel Gas Cutting A group of oxygen based cutting processes that uses heat from an oxyfuel gas flame to bring up to the kindling temperature and helps maintain the cut on steel. Severing of the material is achieved by the oxygen jet which burns the iron in the steel, which has been heated to kindling temperature by oxyfuel preheat flames.

10. 10 Copyright  2004 Lincoln Global Inc. Advantages No Electricity RequiredNo Electricity Required All Position CuttingAll Position Cutting Extremely PortableExtremely Portable Low Cost EquipmentLow Cost Equipment

11. 11 Copyright  2004 Lincoln Global Inc. Advantages Suitable for Cutting Thick & Thin MaterialsSuitable for Cutting Thick & Thin Materials Can be Readily Used UnderwaterCan be Readily Used Underwater Requires Moderate Operator Skill LevelRequires Moderate Operator Skill Level

12. 12 Copyright  2004 Lincoln Global Inc. Limitations Materials Limited, Primarily FerrousMaterials Limited, Primarily Ferrous Additional Operator Protection NecessaryAdditional Operator Protection Necessary Must Operate under “Hot Zone” ConceptMust Operate under “Hot Zone” Concept (Fire Hazard)(Fire Hazard)

13. 13 Copyright  2004 Lincoln Global Inc. Limitations Various Hazards Associated with Handling of Fuel Gases and High Pressure GasesVarious Hazards Associated with Handling of Fuel Gases and High Pressure Gases Flashbacks and BackfiresFlashbacks and Backfires