Asymmetric Chocks for Six-High Rolling Mill Configuration
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Solution Overview
Problem
Six-high rolling mills face issues with discontinuous cambering and high friction due to double-acting hydraulic actuators and cambering units, limiting axial movement and precision in controlling camber forces, making it difficult to change cylinder configurations efficiently.
Innovation Solution
The method involves using asymmetric chocks with overlapping hydraulic actuators in interspaces to apply camber forces directly on the chocks, allowing for configuration changes between different working cylinder diameters without altering the cambering means or support cylinders, and enabling greater axial movement of intermediate cylinders.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If double-acting hydraulic actuators with cambering units are used to apply camber forces, then cambering capability is provided, but friction increases and axial movement is limited
Solution Approach 1:
The invention extracts and eliminates the cambering units from the system, using only simple hydraulic actuators that apply camber forces directly to the chocks without the intermediate cambering mechanism, thereby reducing friction and removing movement limitations
Solution Approach 2:
The invention uses the chocks as direct intermediaries between the hydraulic actuators and the cylinders, eliminating the need for cambering units and their associated friction problems while maintaining effective camber force application
2Adaptability or versatility
If chocks are turned over to change configuration between different cylinder diameters, then adaptability is improved, but relative movement between chocks and actuators occurs causing friction
Solution Approach 1:
The invention segments the chock-actuator connection into a fixed, non-relative interface, allowing the chock to be turned over for configuration changes while maintaining a constant connection point with the actuator, thereby eliminating friction from relative movement
Solution Approach 2:
The hydraulic actuators are designed with universal mounting that allows them to work with chocks in any orientation, enabling configuration changes through chock rotation without creating relative movement or additional friction
3Productivity
If axial movement of intermediate cylinders is increased, then productivity is improved, but friction from cambering units increases
Solution Approach 1:
By removing the cambering units entirely and using direct actuator-to-chock connection, the invention eliminates the friction source that limited axial movement, enabling greater productivity-enhancing movement ranges
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
This solution enhances the control of camber forces and extends the production range by allowing smoother transitions between configurations, reducing friction and maintaining precision, and enabling larger axial movements without relative movement between chocks and actuators.
Implementation Method 1
means for applying vertical camber forces on the working cylinders, comprising two sets of hydraulic actuators
Implementation Method 2
The method involves using asymmetric chocks with overlapping hydraulic actuators in interspaces to apply camber forces directly on the chocks, allowing for configuration changes between different working cylinder diameters without altering the cambering means or support cylinders, and enabling greater axial movement of intermediate cylinders
Data Source
AI summary
A method for changing the configuration of a rolling mill of the six-high type in which the rolling mill is changed from a first configuration (C1) of a range of diameters of working cylinders (3′, 4′), keeping the chocks (E1, E2) by turning over the chocks (E2) of the intermediate cylinders (5, 6) and by turning over the chocks (E1) of the working cylinders. A rolling mill as such, suitable for implementing the method is also described.