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Welding

Q/A

QuestionAnswer
Which gas does the work when using an Oxy Acet torch? Oxygen
How much pressure does a new tank of oxygen have? 2300psi
How many turns does it take to open the oxygen properly? All the way/back seat valve
What is the maximum hose pressure for oxygen? 200psi or according to the regulator hose dial
What substance must oxygen never come in contact with? And Why? Petroleum, reacts/ combusts
What is the safety feature found at the top of the oxygen tank? High Pressure Release Valve
How much pressure is in a new tank of Acetylene? 250psi
How many turns to open acetylene tank and why? 3 half turns, so it can be shut off quickly in case of fire
What is the maximum hose pressure of acetylene and why? 15 psi (above 15 psi the gas becomes unstable)
Can the oxy-acetylene tanks be used on their side? No
What liquid is inside the acetylene tank? Acetone
What are the 4 positions of welding? Flat, Horizontal, Vertical, Overhead
Extra Credit Abbreviations: 1g, 2g, etc 1f, 2f etc
What are the 5 basic structural types of joints? Butt, Edge, Corner, Lapp, Tee
What is the ignition temperature/ annealing temperature of steel? 1500F
What is the welding temperature of steel? 3,000F
What is the temperature of the plasma in an arc? Up to 10,000F
What is the temperature of an oxy-acetylene torch? 5,000-6,000F
How do you check the oxy- acetylene setup for leaks? Shut the tank valve and watch the tank pressure dial on the regulator. If there is no leak the pressure won't change.
Created by: Alia1
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