Oxy – Fuel Torch

Oxy – Fuel Torch

Ag Mechanics

Equipment:

Oxygen Cylinder

Acetylene Cylinder

Pressure Regulators

Oxy-Acetylene hoses

Torch Body with Cutting attachment

Correct Tip

Equipment Cont..

Cutting Goggles

Safety Glasses

Striker

Check Valves or Flashback Arrestors.

Proper Clothing

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 combustion2. Cylinders are necessary but can also be

highly dangerous3. Always cap bottles in transport4. Cylinders can explode

5. Acetylene bottle should be emptied at a rate of 1/7th capacity per hour or less

6. Flames can reach 6,300 degrees F7. 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

ThreeTypes

OfFlames

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