WEL 1030 - Cutting Processes

• Describe the use of Oxy-Fuel cutting processes
• Discuss the materials that can effectively be cut with Oxy-Fuel processes
• Describe proper eyewear for Oxy-Fuel cutting processes 
• Using a chart, select the proper size cutting torch tip for a given application 
• Demonstrate how to properly set up a cutting torch
• Demonstrate the proper method of cleaning a cutting torch tip
• Demonstrate how to safely light and adjust an Oxy-fuel cutting torch flame
• Explain what actions should be taken to ensure a smooth cut is made, using the Oxy-Fuel process
• Describe how to accurately perform a straight line cut
• Demonstrate how to correctly set working gas pressure on the regulators 
• Explain the process of cutting, and the role of the gas mixture in producing the necessary heat to displace the metal
• Explain how examining the cut surface can help troubleshoot issues with incorrect preheat, cutting speeds and oxygen pressure
• Evaluate the results of preheat, speed and pressure after making a cut
• Describe soft slag and hard slag and the causes for both
• Describe how a fence or guide can be used to perform more accurate cutting
• Demonstrate a straight cut in a flat position in various material thicknesses
• Demonstrate how to perform a hole perforation and cutting circles/shapes
• Describe methods of controlling heat distortion 
• Demonstrate a straight line cut in the vertical and overhead positions 
• Describe plasma arc cutting and how it works
• Explain the setup of a plasma torch
• List the advantages of plasma arc cutting compared to oxy-flame cutting
• Demonstrate cutting a straight cut using a hand held plasma torch, repeat for circles and shapes, with and with a guide/fence.