Located in the heart of Zhejiang’s industrial corridor, CYMBER Aluminum Professional Warehouse is purpose-built for handling, processing, and distributing high-grade aluminum coils and sheets for large-scale industrial users. The facility centers around a heavy-duty automatic aluminum coil leveling and slitting line capable of processing coils up to 10 tons. This single piece of equipment forms the backbone of our flat sheet production, enabling us to deliver dimensionally accurate, stress-relieved aluminum plates directly from coil stock according to exact customer specifications.
The warehouse operates under strict material traceability and process control protocols, ensuring that every sheet that leaves the line meets the mechanical and surface requirements of demanding applications in marine, transportation, energy, and structural sectors.
Core Equipment: The 10-Ton Automatic Aluminum Coil Leveling and Slitting Line
The centerpiece of the warehouse is a fully automated leveling and slitting line designed specifically for aluminum alloys in the 1xxx, 3xxx, 5xxx, and 6xxx series, with thicknesses ranging from 0.3 mm to 12 mm and widths up to 2650 mm.
Key technical modules of the line include:
● Hydraulic coil loading car (10-ton capacity)
● Single-mandrel uncoiler with hydraulic expansion
● Precision pinch roll and 19-roller leveler (6-high configuration)
● Edge trimming and scrap winding unit
● High-precision loop control system
● Flying shear or fixed-length servo shear
● Six-high fine leveling unit (secondary leveling)
● Automatic separator and tension station
● Recoiler for slit mults (optional) and sheet stacker with air-flotation table
The Coil-to-Sheet Process Step by Step
3.1 Coil Receiving and Loading
Coils arrive at the warehouse on dedicated flatbed transport and are immediately inspected for mill certification, surface condition, and mechanical properties. Each 10-ton coil is assigned a unique heat number that is tracked throughout processing.
A hydraulic loading car transfers the coil to the uncoiler. The uncoiler mandrel expands hydraulically to grip the coil ID (typically 508 mm or 610 mm), and a peeler blade gently breaks the outer wrap. Hold-down rolls prevent clock-springing during initial unwinding.
3.2 Initial Straightening and Edge Trimming
Once the strip head enters the line, it passes through a 5-roller straightener that removes coil set. Simultaneously, disc-type edge trimmers remove 10–30 mm from each side, eliminating cracked edges and ensuring parallel sidewalls. Trimmed scrap is continuously wound into compact bales for recycling.
3.4 Primary Leveling – The 19-Roller 6-High Leveler
The heart of the line is the 19-roller (6-high) precision leveler. Work rolls are 80 mm in diameter with high chrome surface and individual backup roller support. Penetration depth and roll bending are adjusted automatically based on alloy, thickness, and yield strength to eliminate internal residual stress and achieve flatness better than I-Unit standards.
For 5xxx marine-grade alloys, deeper penetration is applied to counteract higher yield strength; for soft 1xxx series, lighter settings preserve surface integrity.
3.5 Looper Pit and Speed Synchronization
A 6-meter deep looper pit absorbs speed differences between the leveler and the shear, allowing continuous operation at line speeds up to 80 m/min. Optical loop scanners maintain precise catenary geometry, preventing surface marking.
3.6 Fixed-Length Cutting with Servo Shear
Sheets are cut to customer-specified length using a high-speed servo-driven flying shear or a start-stop fixed shear, depending on thickness and tolerance requirements.
● Length tolerance: ±0.5 mm up to 6000 mm, ±1.0 mm beyond 6000 mm
● Diagonal tolerance: ≤0.5 mm/m
● Cut-line burr height: <0.05 mm
3.7 Secondary Fine Leveling
After the primary cut, sheets pass through a second 6-high fine leveler with smaller-diameter work rolls (50 mm). This unit removes any minor edge wave or center buckle introduced during high-speed cutting, delivering final flatness typically within 1–2 mm per meter across the entire sheet.
3.8 Surface Protection and Stacking
Immediately after final leveling, a PVC or PE film applicator can apply protective film on one or both sides at line speed. Sheets are then conveyed onto an air-flotation stacking table that eliminates surface abrasion. Wooden pallets or steel cradles are positioned beneath the stack, and automatic weight and piece-count verification is performed before strapping.
4. Dimensional Flexibility for Large-Scale Projects
The line accepts coil widths from 800 mm to 2650 mm and can produce sheets in lengths from 500 mm up to 16,000 mm in a single pass. Width slitting is also available, allowing multiple narrower coils to be processed simultaneously when projects require non-standard widths. This capability is particularly valuable for shipyard panel production, wind tower shell segments, and rail car sidewalls where exact dimensions reduce downstream fabrication waste.
5. Material Grades Regularly Processed
● 1050, 1060, 1100 (commercial pure)
● 3003, 3105 (Mn and Mg-alloyed for improved strength)
● 5052, 5083, 5086, 5383, 5454 (marine and cryogenic applications)
● 6061, 6082 (structural and machining grades)
● 7020, 7075 (high-strength aerospace series when required)
6. Quality Control Throughout the Line
Multiple inspection points are integrated:
● Ultrasonic edge crack detection before trimming
● Laser flatness measurement after primary and secondary leveling
● Surface defect camera system (detects pits, scratches, slivers >0.1 mm)
● Automatic marking of any detected defects for downstream segregation
7. Packaging and Load-Out for Large Contracts
Finished sheets are packed according to international heavy-lift standards:
● Steel edge protectors on all four corners
● Moisture-absorbent desiccant packs inside waterproof wrapping
● Load-securing with polyester or steel strapping calculated for 10G acceleration
● Custom steel cradles or wooden saddles designed for 20-ft/40-ft open-top containers or break-bulk vessels
Conclusion
The 10-ton automatic coil-to-sheet leveling and slitting line at CYMBER Aluminum Professional Warehouse in Zhejiang represents a focused, high-capacity processing platform built exclusively for the needs of large industrial consumers. By converting heavy coils directly into precisely dimensioned, stress-relieved flat sheets in a single continuous operation, the facility eliminates multiple handling steps common in traditional plate supply chains, delivering measurable improvements in material utilization, lead time, and final part consistency.
For engineering teams and procurement departments managing multi-ton aluminum requirements, this capability translates into reduced fabrication cost, lower scrap rates, and confidence that every delivered sheet will meet the geometric and mechanical specifications demanded by modern high-performance structures.
Post time: Dec-10-2025