Partitioned Electro-Plastic Shape Control Roller for Strip Width Precision
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Solution Overview
Problem
Traditional shape control methods in cold rolling fail to achieve precise and active control of local electro-plasticity along the width direction of the strip, lacking an effective electrical control system, which limits their ability to handle complex high-order waves and cross-sectional profile control in ultra-thin, wide, and high-strength materials.
Innovation Solution
An electro-plastic shape control roller system with transverse partitioning and independent control, utilizing conductive copper rings and insulating ceramic rings to create partitioned electric heating zones, allowing for precise control of rolling pressure distribution through independent electrical control of each copper ring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional current loading devices are used, then the structure is simple, but precise and active control of local electro-plasticity along the width direction cannot be achieved
Solution Approach 1:
The roller is divided into multiple independent heating zones along the width direction, with each zone controlled by separate conductive copper rings and insulating ceramic rings. This segmentation enables localized electro-plasticity control at different positions, achieving precise shape control of high-order complex waves while maintaining a manageable system structure through modular zonal control
Solution Approach 2:
Different regions of the roller are equipped with independently controllable heating elements (conductive copper rings) that can be activated selectively. This allows the system to apply electro-plasticity control only where needed along the strip width, achieving local quality adjustment for complex shape control without requiring the entire roller to be actively controlled, thus balancing precision with system complexity
2Adaptability or versatility
If conventional shape control methods are used, then the control range is certain, but the range of action in the width direction is limited
Solution Approach 1:
The roller surface is segmented into multiple independent heating zones along the width direction, allowing the system to address different shape defects at different lateral positions. This segmentation expands the control range to cover the entire width of ultra-wide strips while maintaining local precision through independent control of each zone, enabling comprehensive control of complex high-order waves across the full width
Solution Approach 2:
The electro-plasticity control roller with multiple independent zones serves multiple shape control functions simultaneously - it can control edge waves, center waves, and various intermediate wave patterns across the entire width. This multi-functional capability allows a single system to handle diverse shape defects in ultra-wide, high-strength strips, expanding adaptability while maintaining precision through coordinated activation of different zones
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables precise online shape control of high-order complex shapes in ultra-wide, high-strength, and ultra-thin strips by altering the plastic state of the strip, ensuring close contact and effective pressure application, suitable for high-strength difficult-to-deform metals and near-isothermal rolled strips.
Implementation Method 1
By changing the yield stress of the strip in the rolling deformation zone and altering the formability of the material, the distribution of the rolling pressure can be changed, thereby achieving shape and quality control. In recent years, the theory and technology of electro-plasticity have developed rapidly.
Data Source
AI summary
An electro-plastic shape control roller system based on transverse partitioning and independent control is provided. The electro-plastic shape control roller system includes a shape control roller mandrel, conductive copper rings, insulating ceramic rings, a shock-absorbing rubber sleeve, an insulating ceramic roller sleeve, and conductive rotary joints, etc. This system constructs a transversely partitioned electro-plastic shape control roller by alternately arranging the conductive copper rings and the insulating ceramic rings. During operation, a strip is wrapped at a certain angle above the electro-plastic shape control roller to ensure a tight contact between the strip and the conductive copper rings. According to the principle of minimum resistance in the conductive copper ring-strip-adjacent conductive copper ring pattern, the electro-plastic shape control roller system controls the on/off of each set of independent conductive copper rings through the external control circuit.