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China Suppliers Factory for Tandem Rolling Mill / Continuous Rolling Mill for High Precision Steel Strips

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MAIN FUNCTION OF THE EQUIPMENT
This advanced machine is designed for the reverse rolling of high precision and high-quality normal carbon steel, stainless steel strips, and low alloy steel. As a leading China manufacturer, we ensure that our equipment meets the highest industry standards.

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COMPONENTS AND FEATURES OF THE EQUIPMENT
Our system includes an Uncoiler, Hydraulic Coil Car, and Unloading Car, along with a 5-Roll Pinch Flattener, Entrance and Exit Platforms, and a Rolling Mill (users can customize the number of mills for continuous rolling). It also features Left and Right Recoilers, a Joint Gear Box, Hydraulic AGC and Bending Roll System, a Driving Motor, and an Electric Control System. Additionally, we provide an Equipment Lubrication and Process Lubrication System to guarantee optimal performance. Trust in our expertise as one of the top suppliers and factories for steel processing equipment in China.

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    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 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 (mm) Φ610×600 Φ610×750 Φ610×850
    Recoiler Specifications (mm) 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?
    A The continuous rolling mill operates on the equal second flow model, where multiple rolling stands are connected in series. The volume flow of metal between each stand remains constant, and strip thickness uniformity (±5μm accuracy) is maintained through precise speed matching and tension control between stands.
    Q What stand configurations are available for the continuous rolling mill?
    A The equipment supports four-high, six-high, and twelve-high stand configurations, making it suitable for the production of various high-precision sheet and strip materials depending on the application requirements.
    Q What thickness accuracy can the cold continuous rolling mill achieve?
    A The cold continuous rolling mill can achieve a thickness accuracy of ±1μm. Using pickled hot-rolled coils as raw material and rolling through multiple stands, it is ideal for high surface quality applications such as home appliance panels and automotive body panels.
    Q Which mill model is suitable for wider strip materials?
    A The Model 850 supports material widths from 600 to 750mm with a pressing force of 7000 KN and a rolling speed of 480 m/min, making it the most suitable model for wider strip materials among the three available configurations.
    Q What control system is used in these continuous rolling mills?
    A All three mill models (650, 750, and 850) are equipped with Siemens PLC for electric control and Siemens 6RA70 DC speed regulators, ensuring reliable and precise operational performance. The pressing method uses Hydraulic AGC for accurate gap control.
    Q Can the rolling mill parameters be customized according to specific production needs?
    A Yes. The models and parameters listed in the technical table are for reference only. Both the design and production can be fully customized (tailor-made) according to the user's specific requirements, including material type, thickness range, width, speed, and other configurations.