Product Description
Manufactured within our heavy metallurgical machinery workshop in Jingjiang, our Uncoiler Machine is a heavy-duty payoff reel system engineered to support, clamp, expand, and decoil hot- and cold-rolled steel coils across continuous processing lines and cold rolling mills. Drawing on 26 years of heavy fabrication experience and serving premier steelmakers such as Baowu, Shagang, and POSCO, we manufacture each Uncoiler Machine in cantilevered expandable-mandrel, double-cone, or double-stub expandable configurations powered by heavy hydraulic expansion cylinders and regenerative electric drives. By expanding inside the coil eye to secure a rigid internal grip, this industrial-grade Uncoiler Machine feeds strip smoothly at threading speed, supplies steady back-tension during processing, and provides rapid emergency braking, offering coil processors a durable, vibration-resistant payoff core built for high-speed continuous unwinding.
Applications
Cold Strip Rolling Mills: Paying off hot-band or intermediate cold coils into reversing and tandem reduction stands.
Continuous Pickling & Slitting Lines: Decoilers feeding heavy hot-rolled pickled coils into shears and side trimmers.
Continuous Galvanizing & Color Coating Lines: Supplying steady payoff web tension into entry shear and accumulator sections.
Tube & Pipe Forming Mills: Continuously unwinding steel coils into high-frequency tube welding lines.
Technical Specifications
|
Design Standards |
Cold & Hot Strip Processing Machinery Standards, ISO 9001, JB/T 5000 |
|
Structural Types |
Single cantilever expandable mandrel, double-cone payoff, or double-stub expandable mandrel |
|
Coil Weight Capacity |
5 to 35 metric tons per coil |
|
Coil Inner Diameter (ID) |
Ø508 mm, Ø610 mm, Ø760 mm (Expanded via 4-segment wedge mandrels) |
|
Coil Outer Diameter (OD) |
900 mm to 2,200 mm; Strip width: 600 mm to 2,200 mm |
|
Strip Thickness Range |
0.2 mm to 16.0 mm |
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Uncoiling Speed |
Up to 600 m/min (Inverter-duty variable speed drive) |
|
Braking & Back-Tension System |
Regenerative DC/AC electric drive motor plus pneumatic/hydraulic fail-safe disc brakes |
|
Mandrel Outboard Support |
Hydraulically operated swing-away bearing support arm for high-capacity cantilever mandrels |
Customization Capabilities
Mandrel Segment Tailoring: Replaceable cast-steel wedge segments with polyurethane buffer sleeves or gripper teeth to prevent coil clock-springing and inner-wrap scuffing.
Integrated Coil Car System: Matching hydraulic coil loading cars with V-saddles, lift cylinders, and traversing drives engineered into the uncoiler base.
Automatic Center-Guide Shifting (CPC): Base-mounted hydraulic cylinders that shift the uncoiler housing laterally by ±100 mm to correct coil edge alignment.
Integrated Snubber & Peeler Arms: Overhead motorized hold-down snubber rolls and hydraulic peeler blades to flatten the outer coil tongue safely into entry pinch rolls.
Zero MOQ Restriction: Custom engineered for individual payoff retrofits or supplied as part of complete mill packages.
Quality Control
Manufacturing Accreditations: ISO 9001:2015, ISO 14001:2015, and ISO 3834-2 welding quality management.
Full Process QR Code Traceability: Forged main shafts, wedge mandrels, outboard supports, and hydraulic rotating distributors carry individual QR codes linked to certified test records.
Non-Destructive Testing: 100% Ultrasonic Testing (UT) on forged alloy main shafts (42CrMo); Magnetic Particle Testing (MT) on welded frames and wedge slides.
Shop Load & Expansion Testing: Full factory testing verifying hydraulic mandrel expansion force, runout (within 0.05 mm), and rotational balancing.
Heavy Ocean Packaging: Steel transport bases, greased machined surfaces, outboard bearing clamp restraints, and moisture barrier wrapping.
FAQ
Q: How does the uncoiler prevent coil eye collapse and slippage during payoff?
A: Our mandrels utilize precision four-segment wedge blocks expanded by a heavy-duty hydraulic cylinder connected through a rotary distributor. This provides uniform radial pressure around the coil eye, and optional bolt-on segment covers adapt the mandrel to multiple inside diameters.
Q: What is the typical fabrication lead time for an uncoiler machine?
A: Manufacturing, shaft machining, and shop assembly typically take 4 to 5 months from drawing approval to dispatch.
Q: What warranty coverage do you provide?
A: We provide an 18-month warranty from site arrival or 12 months from commercial operation (whichever comes first).
Q: What payment terms are accepted?
A: Standard commercial terms are 30% advance deposit, 40% manufacturing milestone payment, and 30% balance prior to export shipment, payable in USD, EUR, or RMB.
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