Transcript Using Gas Welding Equipment

Using Gas Welding Equipment
Ag Metals I
Objectives
 Identify major part of oxyacteylene welding equipment
 Change oxygen and acetylene cylinders
 Turn on and adjust oxyacetylene controls
 Light and adjust oxyacetylene torches
 Shut off and bleed oxyacetylene equipment
 Check for leaks in gas equipment
General Safety with Compressed Gases
 Wear safety glasses or a face sheild with a
properly tinted lens at all times.
 Store fuel gas cylinders separately from oxygen
cylinders.
 Keep cylinders upright and chained securely at all
times.
 Do not bump or put pressure on pipes,
connections, valves, gauges or other equipment
connected to compressed gas cylinders.
 When connections are opened or changed, check
for leaks.
 NEVER use equipment that has been exposed to
oil or grease.
 Follow specific procedures for turning systems on
and off.
 Work only in areas that are free of materials that
burn.
 Never cut or weld with out proper ventilation.
 Always keep a fire extinguisher in the area.
 Always wear gloves and a shop coat.
 Keep caps, screwed on tight, on all cylinders that
do not have regulators.
 Point the torch away from yourself, others and
cylinders.
 Never leave clothing where it can become
saturated with gas.
 If equipment catches fire, immediately turn off
the gas at the tank. If this is not practical or does
not extinquish the fire, evacuate the area and call
for help.
 Learn to recognize the odors of combustible
fuels.
 Protect cylinder storage areas.
Oxyacetylene Equipment
 See handout
 Quiz over parts on _______________.
Setting Up
 Acetylene Cylinder
 High Collar
 Turned on/off with a handle
 Color coded RED
 Left hand threads
 Notched fittings
 Oxygen cylinder
 Unprotected valves during use
 Color coded GREEN
 Right hand threads
 BEFORE attatching regulators CRACK THE CYLINDER
 Done by quickly turning the gas on/off to blow dust from the opening.
 All connections are gas tight—care must be taken not to overtighten valves.
 Overtightening can cause damage to the seats of the valve
 Seat-the point where the moveable part of the valve seals off the gas.