ENGLISH
• Compressed air cylinders are widely used in
many welding processes. If not stored, handled, inspected and
used adequately, compressed gas cylinders can be deadly. May
explode or turn into missiles with great power that can break even
brick walls.
• Inspect the cylinders. Look for external
corrosion, slits, bulging, holes or wells. If in doubt if any
imperfection observed is acceptable under these guidelines, then,
stop using the cylinder. Consult the gas safety sheet before using.
• Many compressed gasses not only represent a
physical danger but also are hazardous to your health. Make sure
you know the health hazards and how to protect yourself. Always
follow the use cautions warnings and handling measures provided
in the safety sheet.
• Never place the cylinders in the vicinity of heat
or near open flames or any resource that could turn into a part of
an electric circuit. Do not use the cylinder to connect to ground
during the electric welding process.
• Wear safety lenses and protective mask when
connecting and disconnecting the regulators and lines of the
cylinder.
• Close the cylinder valve to release pressure
before removing the regulator and when the cylinder is not in use.
The cylinder shall be stored with a visible identification and with
the protection valve cap set in place.
• Purge the passing of gas before using a new
cylinder. Stand aside the cylinder valve. Never stand in front of it.
Before setting the gas regulator into the cylinder, open and close
the valve quickly to expel any foreign particle which could be
housed into the valve.
• Adjust pressure adequately not to waste gas. If the regulators
indicate external pressure, correct immediately.
• Purge all the system after each use. DO NOT
disconnect the equipment when the cylinder valves are open.
• In the event of a gas leak, move the cylinder to an open area
and immediately report it to the supervisor or Civil Protection.
MIG Weld
TIG Welding
• These welders work with an electric arc produced between the
continuous electrode (micro wire) and the work pieces. The arc is
protected from the surrounding atmosphere by the inert gas. It is
expelled at the same time than the electrode while welding.
The micro wire weld shows the following characteristics:
• The arc is easily generated. It is stable during the welding process and produces a good weld seam.
• The seam stays protected against oxidation and cracking due to its low hydrogen content.
• The narrow electrode lessens the possibility or work piece malformation.
• Energy and materials saving with high efficiency in production, lessening operation costs.
• Highly concentrated heat in the arc with strong cast center penetration. Few soldering layers and high electrode casting index.
• Can carry out high-speed soldering with no slag. When there is no need of removing slag, jobs with multiple soldering layers are carried
out in less time.
• Welding can be carried out in any position.
• Adequate to weld mild steel or alloy steel.
• Perfect overheating protection function.
• Is adequate for automotive manufacturing, ships construction, mechanic industry, etc.
It is a welding procedure with no fusing electrode under gaseous atmosphere. This technique can be used with or without weld metal. The
inert gas, generally Argon, insulated the fused metal of the exterior atmosphere preventing its contamination. The electric arc is established
between the non-consumable tungsten electrode and the work piece. The inert gas also covers the electrode preventing any oxidation
possibility.
SMAW Welding
The arc welding process is one of the most used and encompasses diverse techniques. One of these techniques or the arc welding with
metallic covered electrode (SMAW English Acronym). Also, known as arc welding with covered electrode, rod welding or manual welding
with metallic arc. This is a technique where the welding heat is generated by an electric arc between the work piece (metal base) and a
consumable metallic electrode (weld metal) covered with chemical materials in an adequate composition (flux).
Use of compressed gas cylinders
MIG Welders
• These welders also work with an electric arc produced between
the continuous electrode (micro wire) and the work pieces.
Do not require gas because the arc is protected from the
surrounding atmosphere by the gas produced in the combustion in
the electrode core while welding.
FCAW Welders
• Make sure all the threads and connections are
clean and free of oil and grease. Oils and grease when in contact
with pressurized gas may be explosive.
• When making connections, double check tightness.
• Use soapy water to detect any leak
and correct it before turning on the welder.
CAUTION
CAUTION
WARNING
CAUTION
CAUTION
CAUTION
CAUTION
CAUTION
CAUTION
WARNING
Safety Warnings
for Welders
6
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