Product Overview
A continuous cold roll forming system for manufacturing structural C and Z steel purlins. Features online hydraulic punching, programmable cutting, and flexible profile sizing. Available in fixed-profile, adjustable C-purlin, or C/Z interchangeable configurations tailored to project drawings and output goals.
Technical Specifications
|
Component / Item |
Specification & Parameter |
|
Material Yield Strength |
235–550 MPa (Galvanized, Carbon, or Pre-coated steel) |
|
Forming Speed |
Up to approx. 30 m/min (depending on thickness & hole density) |
|
Forming Stations |
Approx. 18–24 stations (profile & yield dependent) |
|
Main Shaft Diameter |
Approx. 70–90 mm (high-grade alloy steel, heat-treated) |
|
Roller Material |
Cr12 / Bearing Steel / Alloy Tool Steel (vacuum heat-treated) |
|
Control System |
PLC + Touch-Screen HMI with remote assistance module |
|
Main Motor Power |
Approx. 15–30 kW |
|
Hydraulic Power |
Approx. 5.5–11 kW |
|
Decoiler Capacity |
3–6 Tons (Manual or Hydraulic Expansion) |
|
Coil Dimensions |
ID: 508 mm | OD: Up to 1,500 mm |
|
Power Supply |
380 V / 50 Hz / 3 Phase (Configurable to regional standards) |
Key Industrial Advantages
Dual-Profile Flexibility: Single-line C/Z production reduces floor space investment and equipment cost.
High-Yield Compatibility: Engineered drive components and shaft diameters easily accommodate high-strength structural steel up to 550 MPa.
Inline Accuracy: Combined punching and programmable hydraulic cutting guarantee tight tolerances on finished purlins.
Modular Upgrades: Compatible with automatic stackers, coil cars, and automated strapping systems for higher factory throughput.
Structural Applications
Roof Purlins & Wall Girts: Primary structural secondary framing for pre-engineered metal buildings.
Industrial Warehouses & Workshops: High-volume, standardized purlin runs for logistics centers and manufacturing facilities.
Solar Racking & Agricultural Structures: Customized C/Z profile geometries for ground-mount solar arrays and modern farming structures.
Online Hydraulic Punching System
Pattern Versatility: Web holes, flange holes, mounting slots, end notches, and repeated spacing.
Synchronization: High-precision encoder feedback coordinates material feeding with punching commands for accurate hole center distances.
Configuration Inputs: Hole patterns are specified by four core parameters: Diameter, Position, Spacing, and Quantity per profile.
Mechanical Rigidity
Pass Design: 18 to 24 forming stations incrementally form the steel strip, minimizing residual stress, web bowing, and edge wave.
Heavy-Duty Construction: High-strength structural steel machine stands ensure zero frame deformation under maximum line yield (up to 550 MPa).
Roller Quality: Tooling is precision CNC-machined and vacuum heat-treated to ensure extended service life during continuous processing of galvanized coil.
Quality Control
Mechanical & Electrical Inspection: Verification of shaft alignment, roller tolerances, hydraulic pressure integrity, and wiring safety.
Factory Trial Run (FAT): Full test run using buyer-specified steel coils to verify web/flange dimensions, hole position precision, and cut quality prior to shipment.
Export Packaging & Shipping Protection: Critical bright-machined surfaces receive anti-rust oil treatment; electrical cabinets and sensitive components are moisture-proof vacuum packed for long-distance ocean freight.
After-Sales Support
Warranty: 12-month comprehensive warranty covering main structural and mechanical components.
Installation & Commissioning: Optional field engineer dispatch for overseas setup, line commissioning, and operator training.
Technical Support: Lifetime remote technical assistance via PLC online connection, video call, and rapid spare parts dispatch.
Frequently Asked Questions
Q: How long does it take to switch from C to Z purlin production?
A: With our quick-interchange system, C to Z rotation takes under 15 minutes manually. Fully automatic PLC-controlled changeovers can complete the process in under 1 minute.
Q: Can one machine process high-yield steel (550 MPa)?
A: Yes. Lines designed for high-strength steel feature enlarged shaft diameters, reinforced stand frames, and specific springback-compensated roller profiles.
Q: Can hole patterns be modified for different building projects?
A: Yes. All hole positions, pitches, and quantities are set in the touchscreen HMI program. Tooling dies can be added or bypassed as needed.
Q: How do you protect the galvanized coating from scratching during forming?
A: Rollers are precision CNC-machined, polished, and electroplated with hard chrome (or made from heat-treated die steel) to ensure smooth contact without damaging zinc coatings.
Q: What documentation is provided with the equipment?
A: Every machine includes an English operation manual, PLC circuit diagrams, hydraulic schematics, foundation drawings, and a recommended spare parts list.
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