High Precision Tandem Rolling Mill Factory in China - Reliable Suppliers for Continuous Rolling Solutions
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.
- ⚙️ Core Components Reducers, motors, universal joint shafts, and roller systems working in integrated series.
- 🏗️ Stand Configurations Supports four-high, six-high, or twelve-high stand configurations for flexible production demands.
- 📐 Precision Output Suitable for high-precision sheet and strip materials with thickness accuracy reaching ±1μm.
🔵 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
🔥 Hot Coil Pickling
→
🔩 Multi-Stand Rolling
→
🌡️ Annealing
→
✅ Tempering
Supporting headless rolling technology to enhance production 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 |
📝 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 (FAQ)
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Q What is the working principle of a continuous rolling mill?The continuous rolling mill connects multiple rolling stands in series and operates based on the equal second flow model, which ensures the volume flow of metal remains constant between each stand. Speed matching and tension control are used to maintain uniform strip thickness with an accuracy of ±5μm.
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Q What materials can the continuous rolling mill process?The mill is designed to process carbon steel and low alloy steel. It uses hot-rolled coils as raw materials, which are first subjected to pickling before being rolled through multiple stands to achieve the required final thickness.
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Q What thickness accuracy can the cold continuous rolling mill achieve?The cold continuous rolling mill can achieve a thickness accuracy of ±1μm, making it suitable for manufacturing high-surface-quality products such as home appliance panels, automotive body panels, and other precision sheet metal components.
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Q What stand configurations are available, and which should I choose?The equipment supports four-high, six-high, and twelve-high stand configurations. The choice depends on your specific production requirements, material properties, and desired strip thickness. Four-high is common for standard applications, while six-high and twelve-high configurations offer greater rolling force and control for thinner or harder materials.
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Q What control systems are used in the rolling mill?The mills are equipped with Siemens 6RA70 DC speed regulators and Siemens PLC electric control systems. The pressing method uses Hydraulic AGC (Automatic Gauge Control) to ensure precise and consistent thickness throughout the rolling process.
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Q Can the rolling mill be customized to meet specific production requirements?Yes. All models and technical parameters listed are provided for reference only. The design and production of the rolling mill can be fully tailor-made to meet individual user requirements, including custom material widths, rolling speeds, pressing forces, and stand configurations.