What are the characteristics of High Precision Copper Alloy Strip Cold Rolling Mill

      The core features of High Precision Copper Alloy Strip Cold Rolling Mill include strong rigidity of the roller system, extremely precise thickness/plate shape control, closed-loop speed and tension, high surface quality, intelligent whole process, and adaptability to ultra-thin/high hard alloys.

1、 The roller system has a precise structure and high rigidity

      The mainstream adopts six roll UCM/UCMS (working roll+intermediate roll+support roll), and 18/20 roll Sengemir is used for ultra-thin belts; Small roller diameter working roller (Φ 80-250mm), with a middle roller that can move and bend positively and negatively, suppressing edge/middle waves and minimizing lateral thickness differences.High rigidity integral frame/prestressed frame, rolling force of 300-600 tons, small deformation, strong stability, suitable for high hardness alloys such as brass, phosphor copper, beryllium copper, etc.The precision of the work roll grinder is ≤ 0.5 μ m, and the surface roughness Ra is ≤ 0.02 μ m, ensuring a mirror level surface for the strip.

2、 Thickness control (AGC) ultra-high precision

      Hydraulic AGC+electric pressing dual system, response ≤ 5ms; roller gap positioning ± 1 μ m , thickness closed-loop control ± 1-1.5 μ m (0.05-1.0mm strip).Configure X-ray/laser non-contact thickness gauge with real-time feedback compensation; The initial thickness difference is less than 10 μ m, and the overall stability is strong.Multi variable coupling model of rolling force, tension, and speed, adaptive compensation for thermal expansion and wear.

3、 Closed loop control of flatness

      S-shaped measuring roller+segmented cooling+bending roller+running roller linkage; Plate shape accuracy ≤ 5I-8I (≤ 0.5I units).The intermediate roller with a long stroke (± 50-150mm) optimizes the distribution of roller gap contact, resulting in good consistency in the shape of the wide strip.Multi zone jet cooling (20-40 zones), dynamic and precise compensation for thermal convexity.

4、 High precision and stable tension and speed

      Fully digital DC/AC servo for unwinding/main rolling/coiling, with speed synchronization accuracy of ± 0.1% -0.5%.Tension control with wide range and high precision (± 1%), automatic switching between large and small drums, suitable for the entire track from thick to thin.Reversible rolling with high-speed stability (300-600m/min), smooth acceleration and deceleration, and no wave like deviation.

5、 Excellent surface quality and cleanliness

      Full oil lubrication/fine filtration (≤ 5 μ m)+efficient electrostatic/vacuum oil removal, with extremely low residual oil, no scratches, and no bright spots.High precision dynamic balancing of guide rollers and anti wrinkle rollers, soft contact protection surface; Suitable for high demand scenarios such as electronics, new energy, connectors, etc.

6、 High degree of automation and intelligence

      PLC+secondary process control, integrated with parameter setting, model calculation, quality traceability, and fault diagnosis.One click threading, automatic pass allocation, automatic thickness calibration, and strip breakage protection, with high stability and yield.Support remote operation and maintenance, big data analysis, and process optimization.

7、 Wide range of product adaptability

      Rolled copper, brass, phosphor copper, white copper, beryllium copper, high copper alloys, etc.Thickness: 0.03-2.0mm; Width: 400-800mm; Ultra thin strip 0.03-0.1mm with stable accuracy.Meet the requirements of high-end materials such as 5G, electronic lead frames, new energy batteries, connectors, shielding, LED, etc.