CNC AGC · 4HI / TANDEM · INDUSTRY 4.0

Cold Rolling Mill CRM

High‑precision rolling for thin‑gauge materials, superior surface finish, ±2μm thickness tolerance. Four‑High & tandem configurations.

±2μmthickness tolerance
1200m/minmax speed
30tcoil weight
UNCOIL 4Hi Stand 1 4Hi Stand 2 RECOIL ➤ UNCOIL ➤ 4Hi Stand1 ➤ 4Hi Stand2 ➤ RECOIL

Cold Rolling Mill "CRM" – Precision & Efficiency

Four‑High two‑stand tandem cold rolling mill, 4Hi AGC, high rolling forces, excellent surface finish.

TOKO design purpose for "Four-high two-stand cold rolling mill" is to achieve high-precision and efficient rolling of metal sheets. It utilizes four rollers in each stand to provide stability and control during the rolling process, ensuring accurate thickness and surface quality of the rolled product. The two-stand configuration allows for multiple passes and progressive reduction in thickness, enhancing the overall rolling efficiency. This design is tailored for industrial production, aiming to meet the demands for high-quality metal sheets in various applications.

4‑High Rigidity

Small work rolls, large backup rolls – minimal deflection, excellent gauge accuracy.

AGC Hydraulic

Automatic Gauge Control via hydraulic screwdown, response <30ms, ±2μm tolerance.

Tandem Configuration

Two stands for progressive reduction – higher throughput, better mechanical properties.

CNC Integration

Siemens 840D, force feedforward, roll bending, thermal compensation.

TOKO Cold Rolling Mill

🏭 4‑High Tandem CRM

TOKO 4Hi AGC mill

⚙️ iTOKO 4Hi AGC Rolling Mill

Two-stand CRM layout

📐 Two‑stand configuration drawing

📋 Operating regulations & procedures

  1. 1Personal Protective Equipment: Wear safety helmets, goggles, protective gloves – minimize injury risk from debris or hot parts.
  2. 2Work Area Safety: Clean, organized, no debris. Avoid loose clothing or jewellery.
  3. 3Equipment Inspection: Check rollers, lubrication systems, damage or deformities before start.
  4. 4Parameter Settings: Adjust rolling force, speed, gap per process requirements.
  5. 5Material Handling: Ensure correct positioning on feed roller track.
  6. 6Rolling Operation: Gradually increase pressure, monitor abnormal sounds/vibrations.
  7. 7Quality Control: Check thickness, flatness, surface quality after rolling.
  8. 8Maintenance & Cleanliness: Regular lubrication, wear check, keep equipment clean.
  9. 9Emergency Procedures: Know emergency stop and safe shutdown procedures.

⚙️ Technical Highlights

Mill typeFour‑High (4Hi), two‑stand tandem / single stand available
Rolling forceUp to 3000 kN (per stand)
Strip thickness0.12 – 6.0 mm (carbon, stainless, Al, Cu)
Width range400 – 2100 mm
Speed max1200 m/min
Gauge controlHydraulic AGC, ±2μm (closed loop)
Work roll dia.Ø150 – 600 mm (depending on material)
Backup roll dia.Ø600 – 1400 mm

Materials processed

Carbon steelStainless 304/316AluminumCopperBrassSilicon steelHSLA

Design focus

99% uptime, minimal burr. Auto gap control, anti‑friction bearings, CE safety.

Applications

Automotive, construction, roofing, transformer, tube mills, solar structures.

Talk to an engineer

+86 510 8359 5138
+86 510 8359 7138

Download brochure / quote — we reply within 4h.

Request custom solution

📦 24h custom service — coil dimensions, materials, automation level, financing. Also visit iTOKO MACHINE 2016 or Audited Supplier.