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Steel
is the most widely used metal in the industry. There are
THOUSANDS types of steels depending on the requirements of
its application. Steel is typically a composition of iron
and carbon and other alloying elements that confer specific
mechanical and physical properties. Families classifying
steel are: LOW CARBON STEEL (MILD STEEL), MEDIUM to HIGH
CARBON STEEL; LOW, MEDIUM and HIGH ALLOYED STEEL (with nickel,
chromium, molybdenum, manganese, and others). The higher
the carbon content in the steel, the higher its mechanical
strength, hardness, but also its brittleness and difficulty
to weld with normal mild steel electrodes. Also the higher
the amount of alloying elements, the higher the difficulty
to weld.
In the field of production of new assemblies, welding is
accomplished using different specific electrodes or wires
depending on the specific chemical composition of the steel
to be welded, using specific welding procedures manual or
automated that assume in some cases pre-heating and/or post-heating
steps. The metals are new, clean, well aligned and welders
are qualified for specific procedures and the job is repetitive.
In maintenance, reality becomes so complicated because
the machinery or equipment to be repaired is made of different
types of steels, whose chemical composition is often unknown,
dirty, greasy, painted or galvanized. The maintenance staff
should keep in stock dozens of types of electrodes, with
the great risk of not knowing which one to use and make welds
that could break after a short time, causing dangerous damages
and downtimes, thus a considerable waste of time and money
loss. They often have to weld directly on the machine, not
in optimal conditions, without adequate equipment, often
with parts not well aligned.
For this reason MALLOY has developed a
range of technologically advanced products that face these
difficult conditions and allow to safely repair any steels: MALLOY
303AR, MALLOY 304 and MALLOY
306.
MALLOY 303 AR is a special electrode that
allows to repair welding of all steels, including dissimilar
combinations between them. It has a high mechanical strength,
high elongation to prevent cracks and breaks, it is shock,
corrosion and heat resistant, and can weld in every positions.
It is therefore an universal electrode that all maintenance
department should adopt as the RIGHT SOLUTION FOR ALL STEEL
REPAIR, since it eliminates doubts and mistakes in choosing
the right electrode when you don't know the type of steel
to be repaired, and because it reduces the electrodes inventory
as one electrode can do the jobs of many others.
MALLOY 304 is a universal electrode for
repair works on mild steels or low alloyed steels. It is
extremely easy to use in all positions. Welds with contact
(DRAG) type transfer even in presence of dirt, grease, paint,
rust and wet. It can bent to easily weld IN SITU in restricted
areas.
MALLOY 306 is an electrode designed to
repairs high-strength low alloyed steels for construction
such as T1 and many others. It has high mechanical strength
and crack resistance thanks to the extra low moisture content
of the coating. It provides a great weldability.
With these MALLOY special electrodes you
can easily and safely repair any piece of steel, without
having to dismantle and discard it or sending to a costly
external workshops for repairing.
This means SAVE TIME and
MONEY! |
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