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Metallurgical facilities produce forgings, stamped articles, rolled sheets.
Steel is smelted in arc steel smelting furnace up to 55t capacity.
The steel smelting facilities are equipped with ex-furnace refining and vacuumizing units (i.a. ASEA-SKF) with 70 and 150t buckets.
Steel is poured into moulds from the top by the bottom-pouring method, whereby the weight of forging ingots is 3-360t, and sheet ingots - 5-35t, as well as in six vacuum chambers of 60 to 500t capacity.
The maximum lifting capacity of overhead travelling cranes is 250t, the maximum crane suspension height being 24m.
The metallurgical facilities comprise furnaces for electric slag and vacuum arc remelting allowing to obtain ingots of 18 to 62t weight (ESF) and 14.5 to 44.5t (VAF) to manufacture articles of especially high quality.
Blanks are forged by presses.
Hydraulic presses
| Specification |
|
1250 tf |
|
3200 tf |
|
AKK 6000 |
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AKK 12000 |
| Forging manipulator, lifting capacity, t |
|
5 |
|
30 |
|
120,
40 |
|
250 |
| Forging crane, lifting capacity, t |
|
- |
|
80 |
|
160, 200 |
|
700,
450 |
| Maximum ingot weight, t |
|
5 |
|
25 |
|
114 |
|
360 |
| Maximum forging weight, t |
|
3 |
|
19 |
|
80 |
|
230 |
Blanks of weight up to 50 t are stamped at AKK 12000tf, presses of 3200tf and 1250tf.
The blanks are heat treated is thermal gas fired box furnaces with retractable hearth of lifting capacity up to 800 t.
Overall dimensions of furnaces:
width 2500 mm to 6000 mm
length 5200 mm to 21000 mm
Quenching is both in water and oil. Overall dimensions of oil tank: length 10000mm, width 5100mm, depth 6200mm. Overall dimensions of water tanks: length 12000mm, width 1900mm, depth 6000mm; length 9000mm, width 3300mm, depth 6000mm.
The metallurgical facilities have at their disposal the fleet of machines for straightening and cleaning the sheets as well as the section for assembly and welding of multi-layer packets for the manufacture of coated sheets:
- Roll bending machine for rolling sheets up to 100mm thick and up to 2500mm wide;
- Straightening and bending presses of 5000tf and 10000tf force for straightening sheets and plates 20 to 450mm thick, up to 4000 mm wide, up to 11000mm length, up to 50t weight;
- Automatic cleaning machines for overall cleaning of the surface of sheets and plates;
- Automatic ultrasonic unit for 100% ultrasonic control of sheets and plates of overall dimensions 20-60*1500-4000mm, of length up to 10000mm;
- Seven-roll straightening machine to straighten sheets 20 to 50mm thick and up to 3500mm wide;
- Universal machine for milling and shaping the surface of forged slabs and blanks for assembly of coated sheets;
- Line for automatic flux welding of multilayer packets for rolling coated sheets and plates;
- Initial vacuum pumps to build vacuum in multilayer packets
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