GAUGE & SHAPE CONTROLS SYSTEMS |
HYDRAULIC AUTOMATIC GAUGE CONTROL |
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| Magadh can supply computerized Hydraulic Automatic Gauge Control, (HAGC) System which provides quick and accurate screw down control to hold close strip tolerances necessary to meet the stringent demands of the market. The roll force cylinders are made from solid forged and heat treated alloy steel blocks precision machined and fitted with special hydraulic seals capable of continuous high pressure duty and quick response and are equipped with absolute position transducers of SONY Magnascale/equivalent make for precision position feedback. |
SHAPE CONTROL SYSTEM |
| Magadh can offer shape control system for automatic flatness control with aim to achieve uniform stress distribution in flatness tolerance range of rolled strip. |
The flatness measuring roll is installed as measuring transducer on mill which registers all strip tension variations across the strip width and compares with the tension stress reference curve. The pressure transducers are arranged in staggered manner over the roll surface, connected in groups and fed to charge amplifier, which converts the electric charge into proportional voltages. The optical signals are transferred to acquisition CPU of flatness control computer via optical transmitter.
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Elements of Flatness Control are: |
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Shifting of Rolls |
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Tilting of rolls |
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Work Roll Bending |
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Intermediate Roll Bending |
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Roll Cooling (Zonal) |
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Crown Control |
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Advantages of Flatness Control are: |
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Reduction in strip cracks and breakage |
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Improvement in strip shape by uniform tensile 1 1stress over strip width |
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Increase in mill efficiency |
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Reduced dependency on mill operator's skill |
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