12.5 Chapter Conclusion

Karl Fulton

Summary

Oxy-Fuel cutting is one cutting process every welder needs to understand and will probably have some of the most fun with. Who doesn’t like to play with fire? As old school as this process is, you still see it in most weld shops and repair facilities because of its versatility, portability, and the speed it can cut through extremely thick material accurately. This is also a very low start-up cost for the home hobbyist.

Review Questions

  1. What does OFC stand for?
  2. What is the maximum operating pressure of Acetylene?
  3. What gas is associated with a green hose?
  4. Notches on the nuts indicate what?
    Nut with notches indicating left-hand threads
    Nut with notches / Photo Credit: Karl Fulton, CC BY 4.0
  5. What is happening when the oxygen jet blows through steel?
    1. Rapid oxidation
  6. What is the temperature of a neutral flame for Oxy acetylene?
  7. Why do you only use the tips of your fingers to close the needle valves on the torch?
  8. Why do you want to make sure you and no one else is in front of the oxygen opening when cracking?
  9. Is oxygen flammable?
    1. No
  10. If you are not penetrating all the way through the metal what is a step you can take to correct this?

Attributions

  1. Image of nut with notches by Karl Fulton, for WA Open ProfTech, © SBCTC, CC BY 4.0

License

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Introduction to Welding Copyright © by Washington State Board for Community and Technical Colleges is licensed under a Creative Commons Attribution 4.0 International License, except where otherwise noted.