(laminador en frío 6hi pdf)
Modern 6HI cold rolling mills represent the pinnacle of metal compression technology, utilizing precisely engineered work rolls supported by intermediate and backup rolls. The hexagonal configuration delivers 40-65% higher stiffness than traditional 4HI mills, enabling thickness tolerances of ±0.001mm across 1250mm strip widths. This symmetrical architecture dampens vibration harmonics below 15μm amplitude, critical for aerospace-grade aluminum foils under 0.1mm thickness.
Power transmission systems determine maximum reduction capacity per pass. The following comparison highlights critical performance metrics:
Model Class | Max Roll Force (kN) | Work Roll Diameter (mm) | Torque Density (kNm/mm) | Speed (mpm) |
---|---|---|---|---|
Standard Duty | 8,000 | 240-300 | 2.8-3.2 | 1,200 |
High Performance | 18,000 | 320-380 | 4.0-4.7 | 1,800 |
Tandem Configuration | 22,500 | 350-400 | 5.1-5.8 | 2,500 |
Siemens VAI's CVC® plus technology achieves crown control within 0.5% I-units through asymmetric intermediate roll shifting, while Danieli's QSP integrates inline annealing reaching 800°C ±10°C uniformity. Chinese manufacturers like Wuxi New Huachang leverage hydraulic bending systems reducing flatness deviation to <5I-units at 60% lower component costs than European equivalents. Third-party lifecycle assessments show German designs maintain ±0.25μm surface finish consistency through 750,000 tons before roll regrinding.
Material-specific configurations require nuanced adjustments: Copper alloys demand 45-50HSD work rolls with <0.05μm Ra finish and 0.15mm crown compensation per pass. Automotive-grade steel requires C95-class rolls sustaining 1.5GPa contact pressure and deflection-controlled chocks maintaining <0.003° misalignment. Advanced installations incorporate thickness gauges with 1μm resolution and temperature compensation algorithms to counteract roll thermal expansion during continuous operation.
Jindal Stainless increased yield 12% after implementing a 6HI cold rolling solution by optimizing these parameters:
Parameter | Before | After |
---|---|---|
Thickness Deviation | ±2.5μm | ±0.8μm |
Surface Defects | 12.7/m² | 3.2/m² |
Roll Change Interval | 350t | 950t |
Scrap Rate | 5.1% | 1.7% |
Predictive maintenance systems using vibration spectroscopy detect roll bearing degradation at 0.003g RMS, six months before failure. Automated roll grinding preserves original geometry within 2μm concentricity, extending service life by 140%. Lubrication optimization reduces power consumption 8.4% while cutting oil carryover to 19mg/m² - critical for silicon steel lamination demanding surface cleanliness below 25mg/m² residue.
Industry 4.0 integration transforms laminatoio a freddo 6hi into cyber-physical systems where edge computing applies machine learning to rolling force models achieving 99.7% pass reduction prediction accuracy. Real-time quality monitoring via hyperspectral imaging detects inclusions as small as 15μm during operations. Current R&D focuses on through-thickness microstructure control using magnetic field-assisted rolling to manipulate crystallographic texture, enhancing formability of next-gen alloys.
(laminador en frío 6hi pdf)
A: Most manufacturers provide 6Hi cold rolling mill manuals in PDF format through their official websites. Check product support sections or request documentation directly from brands like Fives or SMS group. Industry forums also share technical PDFs for common models.
A: 6Hi cold rolling mills typically feature 6 work rolls in "Hi" arrangement for superior flatness control. Key specs include 800-1,200mm strip widths, 0.3-3mm output thickness, and 400-1,500m/min speeds. PDF technical datasheets detail roll dimensions, force capacities (e.g. 2000-4000 tons), and drive power.
A: The 6Hi configuration adds intermediate rolls for enhanced rigidity and minimal deflection. This reduces thickness variations at high strip tensions. Intermediate roll adjustments also compensate for roll wear, maintaining consistent profile control – see design diagrams in technical PDFs.
A: Yes, major manufacturers include maintenance protocols in PDF manuals. These cover roll change procedures, backup bearing inspections, hydraulic system servicing, and alignment checks. For specific models like "laminatoio a freddo 6hi," request documentation from European suppliers like Danieli.
A: Detailed CAD drawings are usually proprietary but installation PDFs often include dimensional schematics. Bending block assemblies, roll stack configurations, and housing drawings can be sourced from mill operator manuals or through OEM technical support channels for valid clients.