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Industrial Burners
Industrial burners mean the
natural gas burners or
propane gas burners, which are
used in industrial fields such as in
hospital, restaurant, factories etc. In
USA, the industrial burners have been
widely used for long history.
Industrial burners are larger
than residential
burners, and usually made by
gray iron ASTM A48 Class 20, 25, 30.
Ductile
iron is unnecessary for the
stove
burners.
Gray
iron has been used for
industrial stove burners for many
years, and have been proved for good
quality and performance. For the
material degrees, some clients want to
choose for the higher grades to get
better strength, however, according to
the experience of
Dandong Foundry, the
grades higher than class 30 will cause
the difficulty of drilling the jet
holes. Although you may think the
drilling for the class 35 should not be
a problem, for the jet holes of burners,
it is become a real problem. The nipples
on burners are very small, which cause
their hardness will be higher than other
places, or higher than normal. In
addition, drilling on the nipple is
already difficult in itself, higher
hardness will cause more difficulty for
drilling.
The
jet hole is usually 0.14 to 0.19
inch diameters. There are usually dozens
to hundreds of jet holes on one burner.
Therefore, the drilling works will be
the main costs for the machining of
burners.
The
recommended production process
for the
cast iron stove burners
is
green sand molding for shell
and
resin sand shell molding for the
inside core. Of course, this cast
process was recommended by Dandong
Ruiding Foundry, and they have
considered to reduce the casting costs.
For the better out surface quality, you
could choose to use the hot shell
molding process for both shell and core.
In this way, you will get the better
surface quality but higher cost.
For the
sand holes
and
air holes on the surfaces, we
recommended the inspection standard as
allowable for small quantity of sand
holes or air holes with max. 2mm
diameter and max. 1mm depth. Welding is
unallowable because the welding will
hide the actual depth of holes and will
cause undetermined danger in the future.
Industrial burners are
difficult to manufacture, and only
experienced foundries could make them
very well by low production costs.
  
  
Industrial Burners
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