SHS (Self-propagating High-temperature Synthetic process)
ceramic lined steel pipe and elbow create a new generation
of abrasion and corrosion resistant engineering pipeline.
The Manufacturing Process of Pipe and Elbow:
SHS (Self-propagating High-temperature Synthetic
process) ceramic lined steel pipe and elbow create a
new generation of abrasion and corrosion resistant
engineering pipeline.The composite steel pipe is
composed of three layers: ceramic, intermediate, and
steel layers. The ceramic layer is formed by molten
alumina at a temperature above ***0 degree. The molten
alumina produced from the reaction Fe2O3*2Al=2Fe+Al2O3
spreads on the inside wall of the steel pipe under the
influence of a centrifugal force, then solidifies, so
the ceramic layer has high density and smooth surface
and bonds to the steel pipe.
Abrasion Resistant Ceramic Lined Pipes have been
uniformly produced by a thermite reaction induced under
the influence of a centrifugal force (Centrifugal
Thermite Process) without any high-temperature furnace
facilities. The characteristic feature of the present
process for forming uniform ceramic layers is in its
reaction propagation as well as the reaction heat and
centrifugal force. It is very important in improving
the quality of the ceramic lined pipes to find the
proper conditions of the reactant and centrifugal
force; the former mainly determines the produced
ceramic layer quality and the latter the achievement of
layer separation and the mechanical properties of the
pipes. Ceramic lined tube has great resistance against
corrosion, abrasion and thermal shock.
Features and Advantages:
1). High Abrasion Resistant:
Vickers hardness of the corundum lining is HV***0
to***0, as high as that of tungsten-cobalt hard alloys,
and the abrasion resistance is *0 times as carbon steel
pipes. The composite ceramic lined steel elbow was used
in a mining plant for about fifty thousands hours. The
general service life of common steel elbow is about **0
hours.
2). Corrosion Resistant:
Corundum is a neutral material, and is acid-proof and
fouling -free.
3). Heat Resistant:
Ceramic lined composite steel pipe can work under
circumstances of **0 to **0 Celsius degree .
4). Lower Weight and Convenient Installation:
The ceramic lined steel pipes are lighter than alloy
pipes, cast iron pipes, and cast stone pipes and can be
welded or connected through flanges, which reduces the
expense of transportation and makes the pipes easier to
install. For the pipes with the same sizes, types and
length, the weight of ceramic pipe is about 1/2 of the
wearable cast alloy steel pipe's, while the cost has
reduced *0%~*0% per meter. The weight of ceramic lined
steel pipe is about 1/3 of the cast stone bent pipe's,
1/2 of the cast stone straight pipe's.
5). Lower Cost :
Ceramic lined pipes can take place of expensive
stainless steel, titanium, nickel, cast stone or alloy
pipes. Extended service life can also reduce
maintenance cost.
Specifications:
Tube diameters:*0 to ***0mm<
Elbow angle: *2.5, *5, *0, *0, **0, **5, **0 degrees,
etc.
Three way pipes: Y shaped, Y lateral and other special
shapes
Four way pipes: straight cross, reducing cross.
Ceramic lining thickness (including transition layer):
3 to 8mm
