R72 Roofing Sheet Making Machine

R72 Roofing Sheet Making Machine: Professional Cold Roll Forming Solution

Cangzhou Zhongtuo Roll Forming Machinery Co., Ltd. delivers the R72 Roofing Sheet Making Machine as a precision-engineered industrial system for manufacturing high-performance metal roofing profiles. This specialized equipment processes 0.3–0.8 mm thickness coils through 18 forming stations at speeds up to 15 m/min. Built on a robust 16 mm H-beam frame with 70 mm solid steel shafts and powered by a 5.5 kW main motor, the machine achieves ±2 mm cutting accuracy via hydraulic shearing. Equipped with Delta PLC and 5.7″ touchscreen control, this line handles 914 mm cover width production efficiently for industrial and residential roofing applications.

Core Structural Advantages with the R72 Roofing Sheet Making Machine

Your investment deserves equipment built to industrial-grade standards. Our machine features precision-engineered components for long-term reliability.

The roller system uses high-grade 45# steel or GCr15 bearing steel. Each roller receives 0.05 mm hard chrome coating after precision polishing. This surface treatment prevents scratching of pre-painted coils during forming.

Solid 70 mm diameter steel shafts resist deflection across the entire thickness range. You can process thin 0.3 mm coils and heavy 0.8 mm materials without compromising dimensional accuracy.

The hydraulic cutting system employs Cr12Mov mold steel blades. Heat treatment brings blade hardness to HRC 58-62. This specification ensures burr-free cuts for over 500,000 cycles before requiring regrinding.

Our frame construction uses 16 mm thick H-beam steel. This robust foundation minimizes vibration during high-speed operation. Equipment stability directly translates to consistent profile quality.

Technical Specifications You Can Trust

Quality Control & Manufacturing Standards

Zhongtuo maintains rigorous testing protocols aligned with international manufacturing benchmarks. Every R72 Roofing Sheet Making Machine undergoes comprehensive inspection before shipment.

Profile geometrical tolerance testing verifies cover width and rib height against technical drawings. We maintain ±1 mm tolerance for cover width and ±0.5 mm for rib height. This precision ensures seamless side-lapping during roof installation.

Roller hardness testing uses Rockwell Hardness Testers to confirm HRC 55-60 consistency. Shaft run-out measurements verify concentricity within 0.05 mm. Deviations beyond this threshold can cause sheet twisting during production.

The hydraulic system undergoes 2-hour continuous load testing. We monitor oil temperature stability and pressure consistency at 10-12 MPa. This testing prevents system overheating in tropical climates.

Surface finish inspection includes running the first 100 meters of production. Our 'white glove' test ensures rollers leave no scuff marks on pre-painted materials.

Industrial Applications

The equipment serves diverse sectors requiring durable roofing solutions with load-bearing capabilities.

Large-Scale Industrial Warehousing: The R72 profile provides superior moment of inertia compared to standard corrugated sheets. Your facility can span wider purlin spacings in pre-engineered buildings. This reduces structural steel costs while maintaining roof integrity under wind loads.

Coastal Construction Projects: Process Aluminium-Zinc coated coils without damaging protective layers. The gentle roller design preserves marine-grade coatings for high-salinity environments. Roofs withstand corrosive conditions for extended service life.

Agricultural Infrastructure: Produce custom-length sheets up to 12 meters continuously. Fewer overlaps mean reduced leak risks in grain storage and livestock barns. Long sheets improve biosecurity by minimizing moisture ingress points.

Installation & Operational Support

We provide comprehensive technical assistance to ensure smooth integration into your production line.

Our engineering team delivers detailed foundation drawings and electrical schematics. Installation guidance covers mechanical alignment and hydraulic system setup. Remote commissioning support helps operators achieve optimal settings quickly.

Training programs cover daily operation, parameter adjustment, and preventive maintenance. You receive documentation in multiple languages with illustrated troubleshooting guides.

Spare parts packages include critical wear components. We maintain inventory for rollers, cutting blades, hydraulic seals, and electrical components. Global logistics partners ensure timely delivery to over 150 countries.

Research & Development Backing

Cangzhou Zhongtuo collaborates with Yanshan University's National Cold Rolled Strip Equipment and Process Engineering Research Center. This partnership brings academic research into practical manufacturing applications.

Our R&D focuses on roll design optimization using finite element analysis. AI-assisted simulation tools improve forming path precision while reducing trial costs. Virtual debugging capabilities integrate PLC programming with cloud-based maintenance platforms.

Graduate researchers work directly at our production facility. Their expertise in automation and intelligent control enhances equipment performance. This approach accelerates technology transfer from laboratory to factory floor.

FAQ

Q：Can the machine process both 0.3 mm and 0.8 mm thicknesses without manual adjustment?

A：The system handles this range effectively. For optimal results when switching between extreme thicknesses, we recommend gap adjustment. Advanced models feature electrically adjustable spacers for convenient thickness changes.

Q：What is the cutting blade lifespan when processing high-tensile steel?

A：Standard Cr12Mov blades last 3-5 years under normal use. For G550 high-tensile steel applications, upgrading to SKD11 steel blades prevents chipping and maintains clean cutting edges longer.

Q：How does the equipment handle voltage fluctuations?

A：The electrical cabinet includes overload protection and phase failure relays. These safeguard the VFD and motors from sudden surges. Installing a voltage stabilizer provides additional protection in regions with unstable power supply.

Q：What maintenance schedule should I follow for the hydraulic system?

A：Replace hydraulic oil every 12 months or 2,000 working hours using #46 anti-wear hydraulic oil. Clean filters regularly to prevent debris from damaging solenoid valves. This schedule ensures consistent cutting performance.

Q：The output sheets show curvature. How can I correct this?

A：Uneven pressure in final forming stations typically causes this issue. Adjust the straightening device (Turk's head) at the exit. Side screw adjustments counteract lateral bowing to ensure straight sheet output.

Contact Us

Our engineering team is ready to discuss your specific production requirements for the R72 Roofing Sheet Making Machine. Reach us at zhongtuorollforming@gmail.com  for detailed quotations and technical specifications tailored to your facility.