CVC Work Roll Wear Homogenization via Cyclic Bending
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional rolling technologies face difficulties in achieving simple roll handling, large profile and flatness adjustments, and uniform work roll wear, particularly with CVC work rolls, where the adjustment range is limited and work roll wear is not evenly distributed.
Innovation Solution
Implementing cyclic variation of work roll bending within a predetermined adjustment range, combined with cyclic shifting of CVC work rolls, to complement the effects of work roll bending and shifting, ensuring flatness and uniform work roll wear, while maintaining a large parabolic profile adjustment range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional work roll bending is used for flatness control, then flatness adjustment is achieved, but work roll wear is not uniform and adjustment limits are reached with complicated rolling programs
Solution Approach 1:
The patent implements cyclic variation of work roll bending within a predetermined adjustment range, transforming the static bending approach into a dynamic one. This cyclic variation induces increased cyclic shifting of CVC work rolls, allowing the system to adapt to different rolling programs while maintaining uniform wear and avoiding adjustment limits.
Solution Approach 2:
The patent applies periodic action by cyclically varying the work roll bending within a predetermined range. This periodic variation creates a corresponding cyclic shifting pattern of the CVC work rolls, ensuring uniform wear distribution while maintaining effective flatness control across different rolling programs without reaching adjustment limits.
2Adaptability or versatility
If CVC work rolls with large parabolic profile adjustment range are used, then profile adjustment capability is improved, but work roll wear uniformity deteriorates due to limited shifting range
Solution Approach 1:
The patent transforms the static CVC roll positioning into a dynamic system by cyclically varying the work roll bending. This dynamic approach induces cyclic shifting that充分利用 the large parabolic profile adjustment range while distributing wear uniformly across the work roll surface through repeated positioning changes.
Solution Approach 2:
By implementing periodic variation of work roll bending within a predetermined range, the system creates a cyclic shifting pattern that distributes wear uniformly. This periodic action ensures that the large profile adjustment range is effectively utilized while preventing localized wear concentration, achieving both adaptability and wear uniformity.
3Manufacturing precision
If work roll bending is increased to maintain flatness, then flatness control is improved, but the adjustment range is exhausted and cannot handle complicated rolling programs
Solution Approach 1:
The patent implements dynamic control by cyclically varying work roll bending within a predetermined adjustment range rather than using maximum static bending. This dynamic approach induces corresponding cyclic shifting of CVC work rolls, effectively expanding the usable adjustment range and enabling the system to handle complicated rolling programs while maintaining flatness control.
Solution Approach 2:
The periodic variation of work roll bending within a predetermined range creates a cyclic shifting pattern that prevents exhaustion of the adjustment range. This periodic action allows the system to maintain effective flatness control across diverse and complicated rolling programs by continuously varying the bending rather than relying on maximum static adjustment.
Data Source
AI summary
The invention relates to a method for rolling strips in the roll stand of a rolling mill, wherein said roll stand consists of two axially displaceable working rollers which are provided with a CVC-grinding or a similar contour and whose curved profile is expressed in a third or higher-order polynom and, simultaneously with simple handling of working rollers with large possibilities of adjusting the profile and flatness, the aim of said invention is to homogenize the working rollers wear. For this purpose, the increased cyclic shifting of the working rollers is induced or forced by a cyclic variation of the setting values of the curve of the working cylinders from one strip to another in a predetermined part of the adjustment range thereof, wherein the combined the action of the two adjustment systems (the curve of the working cylinders and the shift thereof) enables the parabolic effects of said two adjustment systems to supplement each other with a high approximation, thereby ensuring the flatness and, in addition, optimally homogenizing the working roller wear.