Composite Roll Stand Stripper for Coolant and Lubricant Control
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Solution Overview
Problem
Existing roll stand stripping devices are inefficient in preventing cooling fluid from reaching the rolling stock and do not effectively manage lubricant distribution between rolls, leading to suboptimal sealing and increased maintenance due to heavy metallic components and inflexible designs.
Innovation Solution
A stripping device comprising a fiber-reinforced plastic main body with a felt layer, providing enhanced sealing, reduced weight, and flexibility, which is easily exchangeable and adaptable to roll radius fluctuations, combined with a contact pressure system for controlled application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If metallic components are used in stripping devices, then structural strength is improved, but device weight increases making movement and exchange difficult
Solution Approach 1:
The stripper body is constructed from fiber-reinforced plastic composite material, which provides high strength-to-weight ratio. The composite structure maintains structural integrity while significantly reducing weight compared to traditional metallic components, enabling easier handling and exchange of the stripping device.
Solution Approach 2:
The invention changes the material parameters from metallic to fiber-reinforced plastic, transforming the physical properties of the stripper body. This material substitution achieves optimal balance between strength requirements and weight reduction, allowing the device to meet structural demands while being lightweight for easy movement and replacement.
2Reliability
If rigid sealing structures are used, then sealing effect is improved, but adaptability to roll radius fluctuations and manufacturing tolerances deteriorates
Solution Approach 1:
The invention employs a flexible felt layer as the sealing surface instead of rigid structures. The felt material can deform and adapt to roll radius fluctuations and manufacturing tolerances while maintaining effective sealing. This flexible approach ensures consistent sealing performance across varying operational conditions without requiring precise manufacturing tolerances.
Solution Approach 2:
The invention changes the sealing mechanism from rigid mechanical contact to flexible deformation-based sealing. The felt layer's physical properties allow it to conform to surface variations and maintain sealing effectiveness, providing adaptability to roll variations while preserving reliable sealing performance.
3Temperature
If cooling fluid is applied to roll surfaces for cooling, then roll temperature control is improved, but lubricant on rolling stock is washed away or diluted
Solution Approach 1:
The invention extracts and removes cooling fluid from the roll surface using the stripper device before the rolling stock passes through. By actively stripping the cooling fluid off the rolls, the system prevents excessive cooling fluid from reaching the rolling stock and contaminating the lubricant, thus maintaining both effective cooling and lubrication.
Solution Approach 2:
The stripper acts as an intermediary element between the cooling system and the rolling process. It intercepts and removes cooling fluid from the roll surface, preventing direct contact between cooling fluid and the rolling stock/lubricant interface, thereby preserving lubricant effectiveness while maintaining cooling function.
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
Significantly reduces cooling fluid and lubricant on the rolling stock, enhances sealing efficiency, and allows for immediate effective operation without start-up time, while offering improved heat resistance and mechanical durability.
Implementation Method 1
The suction effect of the felt layer enhances the sealing effect thereof and furthermore advantageously cools the stripper by absorbing cooling fluid in the felt layer
Implementation Method 2
The stripper comprises a main body manufactured from a fiber-reinforced plastic
Implementation Method 3
By virtue of its flexibility and elasticity, the felt layer furthermore compensates for fluctuations in the radius of the roll along the width and circumference thereof as well as manufacturing tolerances in the main body front side
Data Source
AI summary
A stripping device (7) for a roll stand (1) includes a stripper carrier (15) and a stripper (17) arranged on the stripper carrier (15). The stripper (17) has a main body (19) produced from a fiber-plastic composite. The main body has a main body bottom side (23), which contacts the stripper carrier (15). A felt layer (21) is arranged on a main body top side (25) of the main body (19) which is opposite the main body bottom side (23).