Oxy-Acetylene Hoses. COLOR CODED: Red= Acetylene (Flammable) Green = Oxygen
Oxygen Oxygen- a colorless, odorless, tasteless gas that is heavier than air. Oxygen alone will not burn, but when mixed with other combustibles it becomes highly explosive.
Oxygen is stored as a compressed gas in a steel cylinder to a pressure of 1,800 to 2,200p.s.i. Turn Cylinder valve open completely
Right Handed Threads Regulator has Female Connection, Cylinder has Male Connection Working pressure between 20 and 60 psi We (Ag mech) will use 20 psi Oxygen Regulator
Acetylene Acetylene- is colorless, but has a very distinct odor. This gas is compressed to a pressure of 250 p.s.i. It is composed of carbon and hydrogen. Turn Cylinder Valve 1/3 or 1/4 turn open.
Left Handed Threads Regulator has Male Connection with “V” groove, Cylinder has female Connection. Acetone is added as a Catalyst. Working pressure between 2 and 10 psi Tank pressure, 250 psi We use 5 psi Acetylene Regulator
Oxygen & Acetylene Cutting Is a process used to separate metal by heating it to a melting point, somewhere between 1,400 and 1,800 degrees The metal is then oxidized and blown from the kerf with a stream of pure oxygen
Oxygen Acetylene Safety 1.Oxygen supports combustion 2.Cylinders are necessary but can also be highly dangerous 3.Always cap bottles in transport 4.Cylinders can explode
5. Acetylene bottle should be emptied at a rate of 1/7 th capacity per hour or less 6. Flames can reach 6,300 degrees F 7. Bottles should be stored in a vertical position at all times. Oxygen Acetylene Safety Cont..
Cutting Tips Tips are sized by metal thickness Adjust pressure to fit metal Cone of flame does not touch metal Popping tip means: too close, not enough oxygen, too hot, or dirty tip
Three Types Of Flames
Carburizing Flame Excess acetylene Lack of oxygen Used for soldering & hardsurfacing
Neutral Flame Correct oxygen Correct acetylene Used for cutting, welding & heating
Oxidizing Flame Excess oxygen Lack of acetylene Used for brazing Usually has a whistling sound