12.5 Chapter Conclusion
Karl Fulton
Summary
OFC is one cutting process every welder needs to understand. As old school as this process is, it is still applied in most weld shops and repair facilities because of its versatility, portability, and the speed by which it can be used to cut through extremely thick material accurately.
Due to its application of high-pressure gasses, OFC has inherent safety needs that operators should be diligent to learn and apply each and every use of the process.
Review Questions
- What does OFC stand for?
- What is the maximum operating pressure of acetylene?
- What gas is associated with a green fuel hose?
- What does the presence of notches on the fuel nuts indicate?
- What happens when the oxygen jet blows through steel?
- What is the temperature of a neutral oxyacetylene flame?
- Why should you only use the tips of your fingers to close the needle valves on the torch?
- Why do you want to make sure you and no one else is in front of the oxygen cylinder when opening its valve?
- Is oxygen flammable?
- Describe the steps you can take if you are not penetrating all the way through the metal during OFC.
