Gas Burning Spheroidizing Annealing Furnace
I. Features of Furnace:1.Furnace shell: It is a solid frame
welded by qualified thick steel plates which is 6mm and reinforced
by profile steel. It possesses advantages like beautiful in
appearance, high in strength, etc. Furnace looks even and smooth,
no porosity, slag inclusion, or incomplete infusion would be found.
Outer wall is painted twice with primers, and twice with finishing
coat. Color codes are adopted according to industry standards or
customer's instructions. Key parts are painted with high
temperature resistance paints.2. Furnace lining:Whole lining is
complete refractory fiber structure. Lining is scientifically piled
up by folded blocks of high aluminium silicate refractory fiber,
produced by vacuum throwing method. Refractory fibers are
pre-compression treated before piling up, and then fixed by special
accessories on the casing of furnace. Including the fiber
blankets, the thickness of lining is 300mm. This structure enjoys
low thermal conductivity, stable chemical durability, good thermal
stability & heat-shock resistance, excellent tensile strength &
corrosion resistance. Max. Insulation temp. of aluminum silicate
fiber is 1250ºC. Fixing accessories employ stainless round steel
mold. The lining helps largely increase heating and
thermal-insulation effects, as well as heating efficiency.
3.Heating elements: Heating elements are produced in shape of
waves, made from high temperature resistance alloy of ferrochromium
(Cr20Ni80), and fixed by special ceramic screws. That is easy to
install, maintain and change. This structure seldom comes with
situations like short circuit or overheating of furnace outside
wall. Between fiber wall and resistor, there are ceramic rings,
ensuring no surface contact between them. Resistor's heating effect
is thus greatly improved. Both ceramic screws and rings are
corundum materials sintered under high temperature, so that they
have very good strength and super-long service life. The furnace is
installed with 4 heating zones, where heating elements are
accordingly equipped..4.Furnace coverFurnace cover is made from
high-quality profile steel and steel plates. Upper and bottom seal
heads are formed as a whole by one-time molding. It's light in
weight and effectively helps reduce load on inner tube. Sealing
flanges with thickness 40mm match precisely with the tube, with
good rubber sealing, it does well in protecting pressure inside
furnace. There is 45KW convection fan on the center of furnace
cover, the wheel blade(diameter 850mm) and shaft are made from
Stainless steel. Perform non-destructive test and air tight test on
the inner pot after welding, ensure the sealing function. The cover
is moved by hydraulic lift unit.II.
Models: No.ItemParameter1Inner pot
diameterD3300mm2Convection guide barrelD3100mm3Effective
hight3100mm4Heating sourceElectricity5Power of
burner620KW(415V/50Hz)6Max heating temperature850ºC7Annealing
temperature680-720ºC(adjusted)8Design capacity32 tons (9 D800x550
steel bobbin one layer, totally 4 layers)9Temperature control zone3
zones10Temperature uniformity±5ºC11Temperature control
precision±2ºCIII. Our Workshop:IV. Loading&Shipment:
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