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    4 HI REVERSING COLD ROLLING MILL

    4 HI REVERSING COLD ROLLING MILL
    6 Hi Reversing Cold Rolling Mill

    6 Hi Reversing Cold Rolling Mill
    Tamdem Rolling Mill / Continuous Rolling Mill

    Tamdem Rolling Mill / Continuous Rolling Mill
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    Skin Pass Mill
    Full Hydrogen Bell Annealing Furnace

    Full Hydrogen Bell Annealing Furnace
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    High Hydrogen Gas Bright Belt Annealing Furnace
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    Hr Coil Slitting Line
    Work Roller / Backup Roller for Cold Rolling Mill

    Work Roller / Backup Roller for Cold Rolling Mill
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    Slitting Round Blade/ Slitting Disc Knife
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    High Precision 6 Hi Reversing Cold Rolling Mill - China Suppliers & Factory for Carbon and Stainless Steel Strips

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    MAIN FUNCTION OF EQUIPMENT
    This high-precision rolling equipment is designed for the reverse rolling of normal carbon steel, stainless steel strips, and low-alloy steel, ensuring top-quality results for manufacturers.

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    COMPONENTS AND FEATURES OF THE EQUIPMENT
    Our advanced rolling mill system includes essential components such as an Uncoiler, Hydraulic Coil Car, 5 Roll Pinch Flattener, Entrance and Exit Platforms, Left and Right Recoilers, a Joint Gearbox, Hydraulic AGC (Automatic Gauge Control) and Bending Roll System, Driving Motor, Electric Control System, and both Equipment and Process Lubrication Systems. As a leading China supplier, our factory ensures that every component is built to the highest standards, making us the preferred choice for businesses in need of reliable rolling solutions.

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      Product Details

      The Theory of Six Roll Rolling Mill

      Six roll rolling mill adds a pair of middle roller that can move symmetrically and axially, eliminating the harmful contact between working roll and support roll. During milling, for different width of steel strips will use different movement amount of middle roll, change the contact pressure distribution (flattening value distribution) between rollers and bending force, so to control the plate shape and convexity.

      The Theory of Six Roll Rolling Mill
      Product Introduction

      The six-high reversing cold rolling mill is a high-precision metal rolling equipment, mainly used for multi-pass rolling of strip materials at room temperature to achieve thickness reduction, plate shape control and surface quality improvement.

      The core feature of this equipment lies in its six-high structure design and reversible rolling function. It consists of six rolls including work rolls, intermediate rolls and backup rolls, among which the intermediate rolls can move axially (oscillate), and the work rolls are equipped with hydraulic bending roll devices. This design can effectively adjust the pressure distribution between the rolls and improve the accuracy of plate shape control; the reversible rolling function allows the strip to be rolled back and forth in the mill, ensuring thickness uniformity.

      The six-high reversible cold rolling mill is characterized by high precision, strong adaptability and high efficiency. It is suitable for various materials such as stainless steel, common steel, aluminum and copper, and can roll raw materials with thicknesses ranging from 1.5 to 4.5 mm into thin-gauge finished products with thicknesses ranging from 0.15 to 2.0 mm. The rolling accuracy can reach ±0.02 mm, and the rolling speed is usually 360 to 1000 m/min. The equipment is often integrated with hydraulic systems, automatic control systems and auxiliary devices (such as uncoilers and thickness gauges) to achieve automated operation.

      Typical application scenarios include cold rolling lines for strip steel and deep processing of metal materials. For example, a 1400 mm specification equipment has a maximum rolling force of 12000 kN, suitable for wide strip rolling, and is widely used in the automotive, home appliance, energy and other industries for the demand of high-precision metal strips.

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        High Precision
        Rolling accuracy up to ±0.02 mm for consistent product quality.
      • ⚙️
        Six-High Structure
        Work rolls, intermediate rolls and backup rolls for superior shape control.
      • 🔄
        Reversible Rolling
        Back-and-forth rolling ensures uniform thickness throughout the strip.
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        Wide Application
        Suitable for stainless steel, carbon steel, aluminum, copper and more.
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        High Speed
        Rolling speed from 360 to 1000 m/min for efficient production.
      • 🤖
        Automated Operation
        Integrated with hydraulic, AGC and Siemens PLC control systems.
      Technical Parameter Table
      MILL MODEL / TECHNICAL PARAMETER 950 1150 1380
      Material carbon steel and low alloy steel carbon steel and low alloy steel carbon steel and low alloy steel
      Material thickness (mm) 2.0~3.5 2.0~4.0 2.0~4.0
      Material width (mm) 600~850 900~1050 1000~1250
      Finish thickness (mm) 0.5~0.15 0.5~0.16 0.5~0.18
      Pressing force (KN) 9000 13000 15000
      Support roll Specification (mm) Φ800×920 Φ1050×1120 Φ1100×1350
      Middle roll Specification (mm) Φ350/Φ320×900 Φ380/Φ350×1150 Φ380/Φ350×1350
      Working roll Specification (mm) Φ260/Φ235×950 Φ310/Φ280×1150 Φ280/Φ255×1380
      Driving method Working roll driving Working roll driving Working roll driving
      Main motor DC 1250KW×2 DC 1000KW×4 DC 1250KW×4
      Speed reducer Joint gear box Joint gear box Joint gear box
      Uncoiler (specifications) Φ610×950 Φ610×1150 Φ610×1380
      Recoiler (specifications) Φ508×950 Φ508×1150 Φ508×1380
      Rolling speed (m/min) 800 900 900
      Uncoiler tension (KN) 45 70 70
      Recoiler tension (KN) 9~90 14~140 17~170
      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

      The model and parameter 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 main advantage of a six-high rolling mill over a four-high rolling mill?
      The six-high rolling mill adds a pair of intermediate rolls that can move axially, which eliminates the harmful edge contact between the work rolls and backup rolls. This enables better control of strip shape, convexity and flatness, especially for narrow and wide strips of varying widths, resulting in higher dimensional accuracy and improved surface quality.
      Q What materials can the six-high reversing cold rolling mill process?
      The equipment is suitable for a wide range of metallic materials including carbon steel, low alloy steel, stainless steel, aluminum and copper. It is designed to handle raw material thicknesses from 1.5 to 4.5 mm and roll them down to finished thicknesses as thin as 0.15 mm.
      Q What rolling precision can this equipment achieve?
      The six-high reversing cold rolling mill can achieve a rolling thickness accuracy of ±0.02 mm. This high level of precision is made possible by the hydraulic AGC (Automatic Gauge Control) pressing system and Siemens PLC-based automatic control system, which continuously monitor and adjust the roll gap in real time.
      Q Can the equipment parameters be customized according to specific production requirements?
      Yes. The standard models (950, 1150, 1380) shown in the technical parameter table are for reference only. The design and manufacturing of the equipment can be fully tailor-made based on specific customer requirements, including material type, strip width, finished thickness, rolling speed and other process parameters.
      Q What industries are typical application scenarios for this mill?
      The six-high reversing cold rolling mill is widely used in industries that demand high-precision metal strips, including automotive manufacturing (body panels, structural parts), home appliance production (panels, housings), the energy sector (transformer cores, battery materials) and general metal deep processing applications.
      Q How does the reversible rolling function benefit the production process?
      The reversible rolling function allows the strip to pass back and forth through the mill multiple times without needing to transfer the coil to another machine between passes. This significantly reduces production time, improves thickness uniformity across the length of the strip, and allows for flexible multi-pass rolling schedules that achieve the desired final thickness with high consistency.