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 cover
Furnace 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. |
Item |
Parameter |
| 1 |
Inner pot diameter |
D3300mm |
| 2 |
Convection guide barrel |
D3100mm |
| 3 |
Effective hight |
3100mm |
| 4 |
Heating source |
Electricity |
| 5 |
Power of burner |
620KW(415V/50Hz) |
| 6 |
Max heating temperature |
850ºC |
| 7 |
Annealing temperature |
680-720ºC(adjusted) |
| 8 |
Design capacity |
32 tons (9 D800x550 steel bobbin one layer, totally 4 layers) |
| 9 |
Temperature control zone |
3 zones |
| 10 |
Temperature uniformity |
±5ºC |
| 11 |
Temperature control precision |
±2ºC |
III. Our Workshop:
IV. Loading&Shipment:
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