Cast Iron Welding Electrode Manufacturers calls for a few special
procedure. It's a challenging task and there can be no two opinions about that.
Cast iron, unlike other steels, has much greater carbon content in 2 to 4
percent. This causes most cast iron to be brittle making it difficult to weld.
If the following procedure is followed closely, cast iron can be welded with
relative ease:
Use
either cooling or heating while welding cast iron as it is important to keep
casting iron out of the 150- to 500-degree F array. Preheating is widely preferred;
however there are times when cooling are done. But stick to either cooling or
heating and do not attempt to change in the center of a weld.
Though
preheating the cast ironing part should suffice, it's better to preheat the
entire casting slowly and uniformly in the 500- to 1,200-degree F range. Be
careful to heat within the stated range as overheating may cause iron to crack.
The casting should get hot just to the extent you can to touch it comfortably
with your bare hand. If need be, make welds intermittently to avoid
overheating.
Occurrences
of little cracks when Cast Iron Electrodes Supplier in India, is inevitable. You can apply some sealing compound to prevent
leakages. If there are cracks you must repair with studding. Studding is a
complex process calling for a whole lot of skills. The very first step is to
drill and tap holes on the surface that has beveled. The next step is to put in
steel studs and the studs should come out 5 to 6 mm above the surface and the
studs must then be welded to remain in place.
Preheated
welding can be easily done - particularly for small and manageable objects.
While welding the cast iron without preheating, it's extremely essential the
operator has good control over the welding gun and create the welds as little
as you can.
Welding
cast iron with an arc welder calls for different procedure. As a matter of
fact, persons capable of welding cast iron with arc welder are few in number
and there is a great demand for such skilled persons.
You
might need to either purchase or hire a SMAW (shielded metal arc welding or
stick electrode) welder depending how often you do cast ironing welding with
arc welder. Plug your welder into a 220V outlet and then plug in your ground
cord and welder electrode holder cord into the welder. Please know it to weld
cast iron, then you need a special electrode. You may buy a 770 stick electrode
to weld cast iron.
To
begin with, clean the surface area to be welded with a wire brush. Clamp the
grounding clamp cord from the welder onto the piece of cast iron which has to
be welded. Thereafter, place an electrode into the welder electrode holder and
position the electrode near in which the weld has to begin.
Continue
to tap the electrode onto the cast ironing until an arc is created and begin to
weave the electrode stick from side to side. Make it a point to keep the arc
slightly away from the piece of steel you are welding. Wait for a few minutes
for the weld to cool off gradually. Use the welding hammer to chip off the slag
from the top of the weld. You can purchase this from Cast Iron Electrodes Supplier in India.
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