Presentation on theme: "Agricultural Science II. Define the chapter terms on an exam with 90% accuracy. Describe the proper/safe way to turn the oxyacetylene rig on and off."— Presentation transcript:
Agricultural Science II
Define the chapter terms on an exam with 90% accuracy. Describe the proper/safe way to turn the oxyacetylene rig on and off on an exam with 100% accuracy. Identify the different welding tips on an exam with 90% accuracy. Demonstrate the safe/proper use of an oxyacetylene welding rig in a laboratory activity with 100% accuracy.
Why do we need to learn about oxyacetylene torch cutting systems? Why is it important to understand the steps to start and stop an oxyacetylene torch? Why is it important to use proper safety techniques while using an oxyacetylene cutting system?
Check and make sure gauges are at zero and there are no visual problems with the unit Acetylene FIRST on everything Crack acetylene cylinder valve Turn 1/4 turn Turn on acetylene torch valve all of the way Set working pressure gauge with regulator to 5 to 7 psi Turn off acetylene torch valve
Open oxygen cylinder valve all of the way Open oxygen torch valve all the way Set working pressure gauge with regulator to 20 psi Turn off oxygen torch valve Crack acetylene torch valve Light the torch Add oxygen until distinct cone appears
Shut acetylene torch valve off first Then oxygen Shut off acetylene cylinder valve Then oxygen Bleed acetylene lines Then oxygen Back out acetylene regulator three turns Then oxygen
Wear safety glasses at all times When starting the rig, wear dark safety glasses or tinted shield Wear gloves at all times Make sure you have a good striker
Acetylene is red Oxygen is Green NEVER use Acetylene above 15 PSI ever (5 to 7 for cutting)