The Ø90×300/Ø320×300 reversible 4-hi cold rolling mill, with two
sets of work rollers respectively for rough rolling and fine
rolling. This cold rolling mill is for high carbon steel annealed
strips, ASTM 1095, 1075, 1065, 1050.
- Improved control and precision
- Enhanced material properties
- Versatility in processing
- High productivity
- Capable of handling materials from 0.5mm to 0.1mm thickness
- Maximum rolling speed up to 200 m/min. for high throughput
| Model No. | Ø90×300/Ø320×300 Reversible 4-Hi Cold Rolling Mill |
| Material | ASTM1050, 1065, 1075, 1095 |
| Material thickness (mm) | 0.5 |
| Material width (mm) | 200 |
| Output thickness (mm) | 0.1-0.2 |
Max. coil weight (T) | 1.7 |
| Rolling force (KN) | 2500 |
Thickness reduction per pass | Max15%δ |
| Backup roller size (mm) | Φ320×300 |
| Hardness of backup roller | HS75～80 |
| Work roller (mm) | Φ90×300 |
| Hardness of work roller | HS97～100 |
| Material of work roller and backup roller | 9Cr2Mo |
| Main motor | DC motor |
| Reducer | Combined gearbox |
| Recoiler | Φ500×800 |
| Rolling speed (m/min.) | ≤200 |
| Recoiler tension (KN) | 35 |
| Screw-down mode | Hydraulic AGC |
| Electrical control | Simens |
Process lubrication media | Rolling liquid |
Flow rate of process lubrication (L/min.) | 500 |
Flow rate of thin oil lubrication (L/min.) | 63 |
Working pressure of general hydraulic (MPa) | 10 |
Working pressure of AGC screw down (MPa) | 18-21 |
Total installation power (KW) | about 700 |
Note: The above specifications are for reference only. Customized
cold rolling mill as per customer's requirements and demands would
be available.
Uncoiling → Left recoiler ←→ 4-hi reversible rolling mill ←→ Right
recoiler → Coil discharging car
The Ø90×300/Ø320×300 Reversible 4-Hi Cold Rolling Mill is widely
used in industries such as steel, aluminum, automotive, aerospace,
and electrical appliances. It enables precise and efficient metal
processing, providing high-quality products with controlled
thickness, improved surface finish, and desired material
properties.
Packaging:
All parts of the Ø90×300/Ø320×300 Reversible 4-Hi Cold Rolling Mill are fixed inside container by steel wires and special PET straps,
in order to make sure all parts will not move during transportation
and avoid any kinds of damage of machine and container.
Shipping:
Sea Freight: The Ø90×300/Ø320×300 Reversible 4-Hi Cold Rolling Mill is often shipped via ocean freight, especially for international
transportation. The equipment is securely loaded into shipping
containers or flat racks, which are then loaded onto cargo vessels.
This mode is suitable for long-distance shipping and can
accommodate larger and heavier cold rolling mill.
Air Freight: When there is a need for fast delivery or for shipping smaller or
lighter cold rolling mill, air freight can be used. The equipment
is packed and loaded onto aircraft for transportation. Air freight
is typically more expensive than ocean freight but offers quicker
transit times.
1) Customized service, including consulating, design, technical
proposal, one-stop servicing.
2) High cost-effective product.
3) All-around pre-sales & after-sales services.
Q1: What types of materials can the mill process?
Hot rolled low carbon steel strips.
Q2: What is the thickness range for input materials?
The mill can handle input material thicknesses up to 0.5mm and produce finished products as thin as 0.1-0.2mm.
Q3: What kind of automation features does the mill have?
The mill is equipped with an Automatic Gauge Control (AGC) system
for precise control of the rolling process, including hydraulic
control of the press-down system and thickness gauge pre-control.
Q4: How does the AGC system enhance performance?
The AGC system allows for tight thickness tolerances, achieving
stable rolling within ±4.5μm for 0.3mm thickness and ±7μm for
0.5-0.8mm thickness.
Q5: What safety features are included in the design?
The mill incorporates various safety features, including overload
protection and emergency stop mechanisms to ensure operator safety
during operation.
