helen@hbxinnuorollforming.com
Produces IBR and corrugated steel panels from one forming machine
Upper roller deck shapes trapezoidal rib panels lower deck shapes wave panels
Welded structural frame with stress relief treatment for long service life
Hydraulic flying shear cuts steel panels at target length during production
PLC controller manages panel length batch quantity and forming line speed
Chrome hardened rollers prevent scratching on galvanized and coated steel
Turnkey package with hydraulic decoiler runout table and control system
This double layer steel panel roll forming machine manufactures two distinct steel building panel types from a single compact production unit. The upper forming deck produces IBR (Inverted Box Rib) trapezoidal steel panels — structural building envelope components engineered for roof and wall cladding on industrial warehouses, commercial buildings, and large-span structures. The lower forming deck manufactures traditional corrugated steel panels — the classic sinusoidal wave building panel used globally for residential roofing, agricultural shed cladding, perimeter fencing, and economy construction projects. By integrating both panel production capabilities into one machine body, manufacturers can supply a complete range of steel building envelope products without the capital cost, floor space, and maintenance overhead of two independent production lines.
| Panel Attribute | IBR Trapezoidal Steel Panel | Corrugated Steel Panel |
|---|---|---|
| Cross-Section Profile | Deep trapezoidal ribs separated by flat valley pans | Continuous sinusoidal wave pattern with uniform curvature |
| Finished Panel Width | 762mm to 1100mm effective cover width | 660mm to 1000mm effective cover width |
| Rib Depth / Wave Height | 28–43mm rib crown elevation above valley | 12–18mm crest-to-trough amplitude |
| Rib or Wave Quantity | 4, 5, or 6 trapezoidal ribs per panel | 5, 7, 9, or 11 sinusoidal waves per panel |
| Panel Length Capability | 1.0m to 14.0m per panel, PLC-programmed | 1.0m to 14.0m per panel, PLC-programmed |
| Primary Building Function | Structural roof cladding, load-bearing wall envelope, long-span industrial roofing | Residential roofing, agricultural building cladding, fence panels, economy wall covering |
| Span Performance | Up to 4.5m purlin spacing in standard wind zones | Up to 2.5m purlin spacing in standard conditions |
| Building Code Relevance | Specified for cyclone and hurricane-resistant construction | Standard for general-purpose building envelope applications |
| Process Step | Station Range | Steel Deformation and Panel Development |
|---|---|---|
| Coil Feed and Strip Alignment | Station 1 | Flat steel strip enters the first roller pair from the decoiler under controlled tension. The entry rollers constrain the strip laterally to establish the panel centerline reference axis. Panel edge flanges begin to turn upward as the strip passes through the guide channel |
| Primary Rib or Wave Initiation | Stations 2–5 | Roller contours initiate bending at the predetermined rib or wave locations. Each station applies approximately 5–10 degrees of angular deformation. The material remains within the elastic recovery zone at this early stage, preventing zinc coating micro-fracture on galvanized steel strip |
| Intermediate Profile Development | Stations 6–12 | Rib side walls steepen progressively; valley sections flatten; wave curvature radius tightens incrementally. The steel undergoes controlled plastic flow across seven forming stations, ensuring uniform metallurgical grain structure throughout the bent regions of the panel cross-section |
| Final Profile Setting | Stations 13–16 | The last forming stations establish the exact panel geometry — final rib height, valley base width, side wall inclination angle, and edge lap configuration. Roller geometry incorporates springback compensation so the panel retains its designed profile dimensions after exiting the forming zone |
| Calibration and Quality Verification | Stations 17–18 | A final sizing station acts as a quality gate, correcting any residual dimensional deviation. At this point the steel panel has achieved its complete engineered cross-section with dimensional accuracy of ±0.5mm across the full panel width relative to the profile engineering drawing |
| Tooling Characteristic | IBR Panel Deck | Corrugated Panel Deck |
|---|---|---|
| Forming Station Quantity | 14–18 pairs of upper and lower profile rollers | 13–16 pairs of upper and lower profile rollers |
| Roller Material Grade | 45# medium carbon forged steel; ultrasonic inspected for internal integrity | 45# medium carbon forged steel; ultrasonic inspected for internal integrity |
| Profile Machining Accuracy | CNC contour turning; ±0.05mm tolerance across full roller face | CNC contour turning; ±0.05mm tolerance across full roller face |
| Case Hardening Process | Gas carburizing in controlled atmosphere furnace; oil quench; surface HRC 58–62; core retains toughness | Gas carburizing in controlled atmosphere furnace; oil quench; surface HRC 58–62; core retains toughness |
| Chrome Plating Specification | Industrial hard chrome electrodeposit; minimum 0.05mm thickness; polished mirror finish | Industrial hard chrome electrodeposit; minimum 0.05mm thickness; polished mirror finish |
| Drive Shaft Material and Diameter | 40Cr alloy steel; Φ75–Φ80mm; precision ground to h7 tolerance; keyway for sprocket | 40Cr alloy steel; Φ75–Φ80mm; precision ground to h7 tolerance; keyway for sprocket |
| Bearing Specification | Split pillow block housing; double-row self-aligning spherical roller bearing; grease lubrication | Split pillow block housing; double-row self-aligning spherical roller bearing; grease lubrication |
| Section | Design and Build Standard |
|---|---|
| Structural Frame Assembly | Welded heavy channel steel longitudinal members with cross-braced H-beam vertical columns (300H–400H structural grade). Complete assembly undergoes post-weld thermal stress-relief annealing to neutralize fabrication stresses. All bearing mounting surfaces are precision machined after heat treatment to guarantee exact shaft centerline parallelism across every roller station in both forming decks |
| Primary Drive System | 5.5kW or 7.5kW AC induction motor (4-pole, 1440 rpm, IP54 protection) coupled to a worm-type dual-output speed reducer (ratio 1:40 for fast thin-gauge production or 1:59 for high-torque thick-gauge processing). Two independent heavy-duty double-row roller chain circuits, one per deck, with hardened alloy steel sprockets on every roller shaft and individual chain tensioner mechanisms per loop |
| Hydraulic Cut-Off System | 4.0kW gear pump motor driving a hydraulic power unit with 80L reservoir, inline filtration, and oil temperature control. Flying shear carriage on linear guide rails with pneumatic panel clamp. Cr12MoV cold-work die steel blade set, vacuum heat treated to HRC 60–64, ground to match the steel panel cross-section for profile-conforming cuts without panel deformation |
| PLC Automation Package | Programmable logic controller (Siemens S7-1200, Delta DVP, or Mitsubishi FX3U per customer specification), variable frequency drive inverter for stepless line speed regulation, 7-inch or 10-inch color touchscreen human-machine interface with multi-language support, rotary pulse encoder on final forming shaft for real-time panel length measurement, mechanical limit switches for shear carriage positioning, three emergency stop pushbuttons located along the production line at operator, shear, and discharge stations |
| No. | Line Component | Role in Panel Manufacturing |
|---|---|---|
| 1 | Hydraulic Mandrel Coil Uncoiler | Supports steel coil on expanding hydraulic jaws; 5-ton or 8-ton capacity; adjustable brake system provides uniform strip pay-off tension for consistent panel forming quality |
| 2 | Entry Alignment and Pre-Shear Table | Adjustable-width side guide rollers center the strip on the forming axis; manual guillotine blade squares the coil leading edge prior to threading into the selected roller deck entrance |
| 3 | Double Layer Main Forming Station | Core production unit with upper IBR panel deck and lower corrugated panel deck mounted on a single structural frame; pivoting diverter plate directs strip into the active deck; shared motor, gearbox, chain drives, hydraulic shear, and PLC controller |
| 4 | Flying Hydraulic Post-Cut Unit | Shear carriage accelerates to match line speed upon cut signal; pneumatic clamp secures the formed steel panel; hydraulic cylinder drives the profiled blade through the cross-section; carriage returns to home position without pausing panel production |
| 5 | Electrical Control Enclosure | IP54 rated steel cabinet housing PLC, VFD, relays, motor overload protectors, and circuit breakers; external touchscreen HMI for operator panel length entry, batch counting, speed adjustment, and fault diagnostics |
| 6 | Discharge Roller Conveyor Table | 3m–5m free-roller receiving table with height-adjustable legs; supports finished cut steel panels as they exit the shear for manual stacking, bundling, and dispatch preparation |
| Specification Item | Technical Data |
|---|---|
| Suitable Steel Coil Types | Hot-dip galvanized steel (GI Z60–Z275), pre-painted galvanized iron (PPGI PE/SMP/PVDF coating), aluzinc/Galvalume (AZ150–AZ200), cold-rolled steel strip, aluminum alloy sheet (1100/3003 series) |
| Steel Thickness Processing Range | 0.25mm to 0.80mm (approximately gauge 30 through gauge 20 equivalent) |
| Steel Yield Strength Limit | 200 MPa up to 400 MPa (standard mild steel through structural steel grades) |
| Panel Production Speed | 10–18 linear meters per minute; stepless variable adjustment through VFD inverter control |
| Panel Cut Length Precision | ±1.0mm at any programmed panel length through rotary encoder real-time pulse feedback to PLC auto-correction logic |
| Panel Type Changeover | Manual pivoting material guide plate; switch from IBR panel production to corrugated panel production in approximately 10–15 minutes including strip re-threading |
| Electrical Supply Standard | 380V 50Hz 3-phase; custom voltage (220V/415V/440V/480V) and frequency (50/60Hz) configured to match destination country power grid specification |
| Total Connected Power | Approximately 10–12 kW (main drive motor 5.5/7.5kW + hydraulic pump motor 4.0kW combined) |
| Machine Footprint (L×W×H) | Approximately 7.0–8.0m × 1.4–1.6m × 1.7–2.0m; final dimensions depend on ordered roller station count and frame specification grade |
| Machine Net Weight | 5.0 to 7.5 metric tons depending on profile configuration, roller station quantity, and frame grade selected |
| Decoiler Load Rating | 5 metric tons standard duty or 8 metric tons heavy duty per customer production volume requirement |
| Coil Bore Diameter | Φ508mm standard; Φ610mm with decoiler mandrel adapter sleeve available upon request |
| Step | Operation | Description |
|---|---|---|
| 1 | Coil Installation | Steel coil positioned onto the hydraulic uncoiler mandrel; expansion jaws lock into the coil inner bore; brake resistance set to maintain uniform strip tension throughout the panel production run |
| 2 | Strip Entry and Alignment | Coil leading edge fed through adjustable entry side guide rollers to achieve centerline alignment with the forming axis; manual pre-shear guillotine squares the coil head before insertion into the selected deck entrance |
| 3 | Forming Deck Selection | Operator positions the pivoting diverter guide plate — upward directs the steel strip into the upper IBR panel forming deck; downward routes it into the lower corrugated panel forming deck. Deck changeover from one panel type to the other is completed within approximately 10 minutes |
| 4 | Progressive Roll Forming | The flat steel strip advances sequentially through each roller station pair; at every station the metal undergoes incremental bending deformation until, emerging from the final forming station, the strip has been transformed into a complete IBR trapezoidal steel panel or full corrugated wave steel panel |
| 5 | Panel Length Measurement | Rotary pulse encoder on the final forming shaft transmits continuous digital signals to the PLC processor; the controller compares the real-time accumulated pulse count against the operator-programmed target panel length |
| 6 | Automated Panel Cut | Upon reaching the target panel length, the PLC triggers the cut cycle: pneumatic clamp secures the formed panel → shear carriage accelerates to synchronized line speed → hydraulic cylinder drives the profiled Cr12MoV blade through the steel panel cross-section → blade retracts and carriage returns to home — the entire cycle completes without interrupting continuous panel production |
| 7 | Panel Collection and Stacking | The separated finished steel panel slides onto the free-roller discharge conveyor table; the operator lifts each panel and stacks it onto the product pallet or bundle for strapping, warehousing, and customer delivery |
| Investment Parameter | Option A: Two Separate Single-Panel Lines | Option B: One Double Layer Panel Line |
|---|---|---|
| Equipment Purchase Expenditure | 100% of total cost for two complete panel forming machines plus two decoilers | Approximately 65–75% of the two-machine combined price |
| Factory Floor Area Required | 44–70 square meters for both panel production lines | 20–35 square meters for one dual-output production line |
| Container Shipping Cost | Two 20GP containers, two separate ocean freight invoices | One 20GP or 40HQ container, one consolidated ocean freight invoice |
| Civil and Electrical Infrastructure | Two concrete machine foundation pads, two power supply drops, two cable runs | One concrete machine foundation pad, one power supply drop, one cable run |
| Production Workforce | 3–4 operators across two independent panel production lines | 1–2 operators for one dual-deck panel production line per shift |
| Energy Consumption | Two drive motors and two hydraulic pump motors drawing power simultaneously | One drive motor and one hydraulic pump motor — approximately 40% lower monthly electricity cost |
| Spare Parts Holding | Two complete sets of wearing components in warehouse inventory | One spare parts kit services both roller decks |
Every completed steel panel roll forming machine undergoes a rigorous three-phase pre-shipment inspection protocol before export packaging. Phase one is comprehensive dimensional verification: every roller gap is measured at each forming station with calibrated feeler gauges against the engineering tolerance specification; shaft concentricity is verified with dial test indicators at all bearing positions; frame alignment is confirmed using precision spirit levels and cross-laser measurement instruments. Phase two is an extended operational dry run: the machine operates continuously at maximum rated speed without material for a minimum of four hours; bearing housing temperatures are monitored and recorded at 30-minute intervals using infrared thermometers; chain drive engagement is inspected visually and audibly for smooth, even sprocket tooth meshing; every PLC function is tested including power-up sequence, motor start, speed regulation, panel length programming, batch quantity setting, recipe storage and recall, emergency stop activation, and restart — validating complete system integration. Phase three is a full live production trial: factory technicians load genuine galvanized steel coil and produce 50 consecutive IBR steel panels plus 50 consecutive corrugated steel panels; every 10th panel is measured for length, rib geometry, wave pitch, and cut edge quality using calibrated digital instruments. Only machines that pass all three phases with zero measurements exceeding the published tolerance range are approved for export crating and container loading.
The main panel roll forming machine receives comprehensive multi-layer export packaging: an inner wrap of VCI anti-corrosion protective film; a middle layer of high-density closed-cell foam padding applied at all corners, machined surfaces, and protruding components; an outer wrap of heavy-gauge UV-stabilized polyethylene shrink film providing moisture, dust, and handling protection during ocean transit. The wrapped assembly is bolted through its base frame to a fumigated ISPM-15 certified plywood pallet or welded structural steel export skid. The hydraulic uncoiler, discharge roller conveyor table, hydraulic power pack unit, and electrical control cabinet are each packed individually in purpose-built marked fumigated wooden crates with internal foam bracing and bolted tie-downs. A dedicated accessories crate contains the operator hand tool kit, spare wearing parts starter pack, and a complete printed technical documentation set: mechanical assembly drawings with exploded component identification, electrical wiring schematic with terminal and wire number labeling, PLC parameter configuration guide, lubrication schedule chart with recommended grease specifications, and the comprehensive English-language operation and maintenance manual. Standard manufacturing lead time is 25–35 working days from receipt of deposit payment and customer-signed profile approval drawings. Warranty coverage is 12 months from the bill of lading date against defects in materials and workmanship.
| Optional Upgrade | Function and Operational Advantage |
|---|---|
| Servo Motor Drive Retrofit | Replace standard AC motor with programmable servo drive for precision-controlled acceleration and deceleration profiles, enhanced panel length accuracy, and reduced power consumption during intermittent production cycles |
| Automatic Panel Stacking Unit | Motorized stacking mechanism transfers finished steel panels from the discharge conveyor table to neatly aligned bundles on a pallet, eliminating manual panel handling and reducing operator labor cost |
| Battery-Powered Coil Transport Cart | Electric-powered trolley operating on floor-mounted guide rails with hydraulic scissor lift platform; transports steel coils weighing up to 10 tons from warehouse storage to the uncoiler mandrel without overhead crane assistance |
| IoT Production Monitoring Module | 4G cellular-connected device transmitting real-time production metrics — daily panel output count, motor operating hours, fault diagnostic codes, and preventive maintenance interval alerts — to a smartphone application or web dashboard |
| Custom Embossing Roller Station | Specially engraved forming roller pair that permanently imprints a manufacturer brand name, company logo, or production batch code into each steel panel during the roll forming process |
| Stainless Steel Roller Tooling Set | Complete forming roller set manufactured from grade 304 or 316L austenitic stainless steel for steel panel production in food-grade facilities, pharmaceutical plants, chemical processing environments, or coastal locations with high atmospheric salinity |
