China Continuous Rolling Mill Suppliers - High Precision Tandem Rolling Mill Factory for Carbon and Stainless Steel
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.
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
★ 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 |
ⓘ 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
Q
What is the working 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. Multiple rolling stands are connected in series, allowing continuous plastic deformation of metal materials. Speed matching and tension control are used to ensure strip thickness uniformity with an accuracy of ±5μm.
Q
What stand configurations does the continuous rolling mill support?
The equipment supports four-high, six-high, and twelve-high stand configurations, making it suitable for the production of high-precision sheet and strip materials across a wide range of industrial applications.
Q
What thickness accuracy can the cold continuous rolling mill achieve?
The cold continuous rolling mill, using hot-rolled coils as raw materials processed through pickling and multiple rolling stands, can achieve a thickness accuracy of ±1μm. This makes it ideal for high surface quality products such as home appliance panels and automotive body panels.
Q
What mill models are available and what are their key differences?
Three standard models are available: 650, 750, and 850. The main differences lie in material width capacity (400–520mm / 500–650mm / 600–750mm), pressing force (5000 / 6000 / 7000 KN), and rolling speed (360 / 420 / 480 m/min). All models share the same number of mill units (5 sets) and control systems (Siemens PLC and Siemens 6RA70).
Q
What control system does the continuous rolling mill use?
All models are equipped with Siemens PLC for electric control and Siemens 6RA70 DC speed regulators. The pressing method uses Hydraulic AGC (Automatic Gauge Control) to ensure precise and consistent thickness throughout the rolling process.
Q
Can the continuous rolling mill be customized to specific requirements?
Yes. The technical parameters listed in the specification table are for reference only. Both the design and production can be fully tailor-made according to the user's specific requirements, including custom dimensions, capacity, speed, and configuration options.