6
ENGLISH
• Compressed gas cylinders are widely used in
many soldering processes. If not stored, handled, inspected and
use properly, the compressed gas cylinders may be fatal. They
explode or turn into missiles with such force they can even break
brick walls.
• Inspect the cylinders for outer corrosion,
indentations, lumps, holes or wells. If not sure if some
imperfection is acceptable under these guidelines, stop using the
cylinder! Read the gas safety sheet before using it.
• Many compressed gas cylinders not only
represent physical hazard but are also a health hazard. Be sure
you are aware of the health dangers and how to protect yourself.
always follow the caution measures about use and handling
instructed in the safety sheet.
• Never place the cylinders close to hear sources
or open flame that could turn into an electric circuit. Do not use
the cylinder to be source of ground while in the electric soldering
process.
• Wear protective lenses and mask when
connecting and disconnecting the gauges and lines to the cylinder.
• Close the cylinder valve to release the pressure
before removing the gauge and when the cylinder is not in use.
Cylinders shall be stored with a visible identification and the
protection cap set on the valve.
• Before using a new cylinder purge the gas.
Stand aside the cylinder valve, never in front. Quickly open and
close the valve to expel any foreign matter housed in the valve
before setting the gas gauge in the cylinder.
• Adjust the pressure correctly not to waste gas. If the gauges
show extreme pressure make it right immediately.
• Purge the whole system after each use. DO
NOT disconnect the equipment when the cylinder valves are
open.
• In case of gas leak move the cylinder to an open zone and
report immediately to the supervisor and/ or Civil Protection
Crews.
GMAW / FCAW Welder
• Gas used in the welding processes are inert gases that do not
react under normal conditions. The gases are colorless, odorless
and tasteless.
• Do not ignite or support combustion.
• These gases displace air, so they can cause
asphyxia when confined or poorly ventilated atmospheres.
• Do not use the welder in enclosed spaces or
poorly ventilated. Otherwise the operator may be seasick, faint or
could die because of lack of oxygen.
• The GMAW welders work with an electric arc produced between
the continuous electrode (micro wire) and the work pieces. The
arc stays protected from the surrounding atmosphere by inert gas
expelled at the same time than the electrode while the weld is
carried out.
Gas Handling
Micro wire welding has the following characteristics:
• The arc generates easily. It is stable during the welding process and produces a good welding bead.
• The bead stays protected against oxide and cracking because of its low hydrogen contents.
• The thin electrode lessens the possibility or distort the work piece.
• It saves energy and materials with high efficiency in product, lowering operation costs.
• Highly concentrated heat in the arc with strong flux penetration, few welding layers and high flux index of the electrode.
• It can make high speed soldering with no slag due to not being necessary to remove slag. Multiple layers soldering jobs are finished in
less time.
• Soldering can be carried out in any position.
• Adequate to solder sweet steel or steel alloy.
• Perfect protection function against overheating.
• Adequate for automobile manufacture, ship construction, mechanical industry, etc.
Use of Compressed Gas Cylinders
GMAW Welders
• FCAW welders also work with an electric arc produced between
the continuous electrode (micro wire) and the work pieces. It does
not require gas because the arc stays protected from the
surrounding atmosphere by the gas produced in the electrode core
during the combustion while welding.
FCAW Welders
• Make sure all connections, hoses and gaskets are
in good condition. Replace any one damaged immediately.
• Make sure all threads and connections are clean
and free of oil and grease.Oils and greases in contact with
pressurized gases may be explosive.
• When making the connections make sure they are tight.
• Use soapy water to detect any leakage and
correct it before turning on the welder.
Gas connections
CAUTION
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WARNING
WARNING
CAUTION
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WARNING
Safety Warnings
for Welders
