High Precision Tandem Rolling Mill for Carbon and Stainless Steel - Leading China Suppliers & Factory
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. 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.
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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.
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Process Flow
Hot Coil Pickling → Multi-Stand Rolling → Annealing → Tempering
Supporting 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 |
ⓘ 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)
Q What is the core working principle of a continuous rolling mill?
The continuous rolling mill operates on the equal second flow model, which ensures that the volume flow of metal passing through each rolling stand remains constant. This is achieved through precise speed matching and tension control between stands, resulting in consistent strip thickness with an accuracy of ±5μm.
Q What stand configurations are available for the continuous rolling mill?
The equipment supports four-high, six-high, and twelve-high stand configurations, making it adaptable to various production requirements for high-precision sheet and strip materials.
Q What materials are suitable for processing with this rolling mill?
The continuous rolling mill is designed to process carbon steel and low alloy steel. The cold continuous rolling mill uses hot-rolled coils as raw materials, which are first pickled before being rolled through multiple stands to achieve the desired finish thickness.
Q What thickness accuracy can the cold continuous rolling mill achieve?
The cold continuous rolling mill achieves an exceptional thickness accuracy of ±1μm, making it ideal for producing high surface quality products such as home appliance panels and automotive body components.
Q What control systems are used in the rolling mill?
The rolling mill uses Siemens 6RA70 DC speed regulators and Siemens PLC for electric control, ensuring precise and reliable operation. The pressing method employs Hydraulic AGC (Automatic Gauge Control) for consistent thickness management throughout the rolling process.
Q Can the rolling mill parameters be customized to specific requirements?
Yes. All models and technical parameters listed in the specification table are for reference only. The design and production of the continuous rolling mill can be fully tailor-made according to the customer's specific production requirements, including material dimensions, rolling speed, pressing force, and control configurations.