High Precision Tandem and Continuous Rolling Mill from China Suppliers and Factory for Steel Strips
Product Introduction
⚙️
Equal Second Flow Model
Constant volume flow maintained between each stand for uniform output.
📏
Strip Thickness Accuracy
Cold rolling precision reaches ±1μm; continuous rolling ±5μm.
🏭
Flexible Stand Configurations
Supports four-high, six-high or twelve-high stand setups.
The continuous rolling mill achieves continuous plastic deformation of metal materials by connecting multiple rolling mills in series. Its core principle is based on the equal second flow model, meaning the volume flow of metal between each stand remains constant. Uniformity of the strip thickness (with an accuracy of ±5μm) is ensured through speed matching and tension control. The equipment consists of reducers, motors, universal joint shafts, roller systems, etc., and supports four-high, six-high or twelve-high stand configurations, suitable for the production of high-precision sheet and strip materials.
🔵 Cold Continuous Rolling Mill
Using hot-rolled coils as raw materials, after pickling, they are rolled through multiple stands, with thickness accuracy reaching ±1μm. It is used for high surface quality products such as home appliance panels and car bodies.
⚡ Process Flow
Technical Parameter Table
| MILL MODEL / TECHNICAL PARAMETER | 650 | 750 | 850 |
| Material | Carbon steel and low alloy steel | Carbon steel and low alloy steel | Carbon steel and low alloy steel |
| Material thickness (mm) | 2.0~3.0 | 2.0~3.0 | 2.0~3.0 |
| Material width (mm) | 400~520 | 500~650 | 600~750 |
| Finish thickness (mm) | 0.6~0.40 | 0.6~0.40 | 0.6~0.40 |
| Pressing force (KN) | 5000 | 6000 | 7000 |
| Support roll Specification (mm) | Φ520×550 | Φ600×700 | Φ700×820 |
| Working roll Specification (mm) | Φ175×600 | Φ200×750 | Φ240×850 |
| Mill Units | 5 sets units | 5 sets units | 5 sets units |
| Driving method | Working roll driving | Working roll driving | Working roll driving |
| Main motor | DC motor | DC motor | DC motor |
| Speed reducer | Joint gear box | Joint gear box | Joint gear box |
| Uncoiler (specifications) | Φ610×600 | Φ610×750 | Φ610×850 |
| Recoiler (specifications) | Φ508×600 | Φ508×750 | Φ508×850 |
| Rolling speed (m/min) | 360 | 420 | 480 |
| Uncoiler loop | Disc loop or ground loop | Disc loop or ground loop | Disc loop or ground loop |
| Recoiler tension (KN) | 25 | 30 | 35 |
| Pressing method | Hydraulic AGC | Hydraulic AGC | Hydraulic AGC |
| DC speed regulator | Siemens 6RA70 | Siemens 6RA70 | Siemens 6RA70 |
| Electric control | Siemens PLC | Siemens PLC | Siemens PLC |
📌 Remark: The model and parameters shown in this table are for reference only. The design and production can be tailor-made according to user's requirements.
Frequently Asked Questions
❓
What is the core working principle of a continuous rolling mill?
The continuous rolling mill operates on the equal second flow model, ensuring that the volume flow of metal between each stand remains constant. This principle, combined with speed matching and tension control, guarantees uniform strip thickness with an accuracy of ±5μm throughout the entire rolling process.
❓
What stand configurations are available for the continuous rolling mill?
The equipment supports multiple stand configurations including four-high, six-high, and twelve-high setups. These flexible configurations allow the mill to be adapted for different production requirements, particularly for high-precision sheet and strip materials.
❓
What thickness accuracy can the cold continuous rolling mill achieve?
The cold continuous rolling mill can achieve an exceptional thickness accuracy of ±1μm. This high level of precision makes it ideal for producing high surface quality products such as home appliance panels, automotive body parts, and other products that demand tight dimensional tolerances.
❓
What materials are compatible with this continuous rolling mill?
The continuous rolling mill models (650, 750, and 850) are all designed to process carbon steel and low alloy steel. The raw material (hot-rolled coils) undergoes pickling before being fed into the multi-stand rolling process, ensuring clean surface quality and consistent rolling performance.
❓
What control systems are used in the rolling mill equipment?
The rolling mills utilize industry-leading Siemens control systems, including Siemens 6RA70 DC speed regulators and Siemens PLC for electric control. The pressing method employs Hydraulic AGC (Automatic Gauge Control), ensuring precise and reliable operation across all three mill models.
❓
Can the rolling mill parameters be customized for specific production needs?
Yes, the mill models and parameters listed in the technical table are provided for reference purposes only. The design and production of each rolling mill can be fully tailor-made to meet specific user requirements, including adjustments to rolling speed, pressing force, roll specifications, and other critical parameters to match your unique production process.