Presentation on theme: "HOW TO LIGHT AND TURN OFF THE OXY-ACETYLENE TORCH."— Presentation transcript:
HOW TO LIGHT AND TURN OFF THE OXY-ACETYLENE TORCH
Compressed Gas DO NOT EXPOSE CYLINDERS TO HEAT OR PHYSICAL SHOCK BECAUSE THEY CONTAIN COMPRESSED GAS AND COULD EXPLODE
Flammable Material DO NOT BURN ENYTHING OTHER THAN THE METAL TO BE JOIND, THIS INCLUDES PEOPLE WATCH THAT THE HEATED METAL DOES NOT BURN ANYTHING OR ANYONE
Oxidizing Material OXYGEN IS AN OXIDIZING MATERIAL THAT INCREASES THE RISK OF FIRE IF IT COMES IN CONTACT WITH COMBUSTIBLE MATERIALS.
Safety Stuff You’ll Be Glad You Know ALWAYS WHERE EYE AND SKIN PROTECTION ALWAYS HAVE A FIRE EXTINGUISHER READY ALWAYS REMOVE LIGHTER OR MATCHES FROM WELDING AREA ALWAYS USE THE EQUIPMENT IN A WELL VENTILATED AREA A 30% CONCENTRATION OF ACETYLENE FOR 4 MINUTES CAN PUT YOU INTO COMA. MIXTURES OF ACETYLENE AND AIR, CONTAINING FROM 2 TO 80% ACETYLENE BY VOLUME, WILL EXPLODE WHEN IGNITED. ACETYLENE SHOULD NEVER BE USED AT PRESSURES EXCEEDING 15 PSI. TO ASSURE SAFETY, DAMAGE TO ANY OF THE EQUIPMENT SHOULD BE REPORTED TO THE TEACHER IMMEDIATELY
OVERVIEW The process consists of these three main parts: preparing the torch for lighting lighting and adjusting the torch turning off the torch
PREPARING THE TORCH FOR LIGHTING Pressurize the regulators –Turn both regulators to the off position
PREPARING THE TORCH FOR LIGHTING Pressurize the regulators –Slowly turn the oxygen cylinder valve counter clockwise and the acetylene valve clockwise just enough to allow the gas to pressurize the regulators. (see Figure: 3)
PREPARING THE TORCH FOR LIGHTING Purge the lines: –Turning the regulators pressure adjusting screws clockwise up to ten pounds one at a time, allowing the gas to escape for five to ten seconds and then off a gain.
lighting and adjusting the flame
2 lighting and adjusting the flame 2.1 Adjusting to correct working pressure: –Turn the acetylene needle valve on the torch one turn –Turn the acetylene regulator up to 3 p.s.i. –Close the acetylene at the handle –Do the same with the oxygen up to 5 p.s.i.
Turning on and lighting the flame Open the acetylene needle valve no more than a ½ turn Light the gas with the striker held about 1” away from the torch tip. Adjust acetylene needle valve to a non- smoking flame
Adjusting the flame Slowly turn on the oxygen needle valve Tune the flame with the oxygen needle valve to the desired type of flame.
TURNING OFF THE TORCH Turn the acetylene torch needle valve off first Then turn the oxygen torch off. Turn the cylinder valves off