China Tandem Rolling Mill Factory - High-Precision Continuous Rolling Mill for Steel Suppliers
Product Introduction
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.
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Core Components
Reducers, motors, universal joint shafts, roller systems, and more.
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Stand Configurations
Supports four-high, six-high or twelve-high stand configurations.
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Precision Output
Suitable for high-precision sheet and strip material production.
🔩 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
Supports headless rolling technology to enhance continuity.
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 |
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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
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What is the core operating principle of a continuous rolling mill?
The continuous rolling mill operates on the equal second flow model, where the volume flow of metal between each stand remains constant. This ensures uniform strip thickness by precisely matching rolling speed and tension control across all connected stands.
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What thickness accuracy can a cold continuous rolling mill achieve?
Cold continuous rolling mills can achieve a thickness accuracy of ±1μm, making them ideal for high surface quality applications such as home appliance panels, automotive body parts, and other precision sheet metal products.
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What stand configurations are available for continuous rolling mills?
The equipment supports multiple stand configurations including four-high, six-high, and twelve-high arrangements. Each configuration is suited for different product requirements, material grades, and precision levels in sheet and strip production.
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What materials can be processed by these rolling mills?
The mills are designed to process carbon steel and low alloy steel. The standard models (650, 750, 850) handle material thicknesses ranging from 2.0 to 3.0mm and can reduce finished thickness down to 0.40–0.6mm. Custom configurations are available upon request.
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What control systems are used in these rolling mills?
The mills use Siemens 6RA70 DC speed regulators and Siemens PLC electric control systems. The pressing method uses Hydraulic AGC (Automatic Gauge Control) for precise and reliable thickness control throughout the rolling process.
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Can the rolling mill parameters be customized to specific requirements?
Yes. All technical parameters, including mill model, strip width, rolling speed, pressing force, and component specifications, can be tailor-made according to the customer's production requirements. Please contact our engineering team to discuss your specific application needs.