I. Technical Comparison of Mainstream Models
Six-roll UC rolling mill (Senjimir type)
Structural features: Axial movement of the middle roller ±100mm, working roller diameter Φ180-450mm
Core function: Solve the problem of edge thinning of thin steel strips (0.15-0.8mm), with a plate shape control accuracy of ±3IU
Twenty-roll rolling mill (Sendway type)
Breakthrough design: It adopts a 1-2-3-4 tower roller system arrangement, with a minimum rolling thickness of 0.001mm
Special application: Precision rolling of stainless steel/silicon steel, with a 60% improvement in the uniformity of rolling force distribution
CVC rolling mill (Continuous variable convexity type
Core technology: The contour curve function of the roll is a sixth-degree polynomial, and the convexity adjustment range is 0-500μm
Market share: The global automotive sheet production line equipment rate reaches 78% (according to the MMI 2024 report)
Ii. Evolution of Key Technologies
Plate shape control
The response time of the AFC system (Automatic plate shape Control) is less than 50ms
The VCR variable contact support roller technology reduces energy consumption by 12%
Intelligent detection
A laser velocimeter (accuracy ±0.05%) and an X-ray thickness gauge (resolution 0.1μm) form a closed-loop control
Iii. Industry Application Matrix
The typical material finished product tolerances of the model represent: for the user's four-high rolling mill, the common carbon steel is ±0.02mm; for the Baowu Zhanjiang base's 18-high rolling mill, the titanium alloy foil is ±0.0015mm; for the Northwest Institute for Nonferrous Metal Research's double-stand rolling mill, the thickness difference of the aluminum tank material is ≤1.5%. Chinalco Ruimin
