Composite Strip Wiper Material for Low-Debris Liquid Removal
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Solution Overview
Problem
Conventional stationary wipers in rolling facilities experience high wear frequency and generate debris that can scratch the metal strip, leading to unevenness and quality issues due to friction and narrow contact areas, which results in high surface pressure and potential scratches.
Innovation Solution
A wiping apparatus using a graphite fiber reinforced resin composite material for the wiping member, which reduces friction and wear, allowing for a wider contact area and oblique orientation to minimize scratches and debris accumulation, thereby reducing replacement frequency and surface damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a stationary wiper is used to remove liquid from the strip surface, then liquid removal effectiveness is improved, but the wiper is prone to wear and generates debris that may scratch the strip
Solution Approach 1:
The wiper is constructed from composite materials including a foam core layer and a covering layer with different material properties. The foam core provides structural support while the covering layer (made of softer, less abrasive material) reduces wear debris generation and prevents strip scratching, thus resolving the contradiction between effective liquid removal and harmful debris generation.
2Loss of energy
If the contact area between the wiper and strip is narrowed to suppress heat generation and wear, then heat and wear are reduced, but high surface pressure acts on the contact portion causing deformation and unevenness
Solution Approach 1:
The wiper employs a layered structure where the foam core layer and covering layer have different local properties optimized for different functions. The foam core distributes pressure evenly to prevent deformation, while the covering layer provides a smooth contact surface that maintains uniformity, thus resolving the contradiction between reducing heat generation and maintaining surface uniformity.
3Strength
If a hard material is used for the wiper to reduce deformation, then structural stability is improved, but high surface pressure deforms the wiper surface and causes unevenness
Solution Approach 1:
The wiper uses a composite structure with a foam core layer providing structural stability and deformation resistance, while the covering layer maintains surface uniformity and prevents scratching. This composite approach resolves the contradiction between structural stability and surface uniformity that cannot be achieved with a single hard material.
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
The graphite fiber reinforced resin composite material significantly reduces wear and friction, minimizing scratches and unevenness on the metal strip, while allowing for effective liquid removal and reduced replacement frequency of the wiping member.
Implementation Method 1
The wiping member is formed from a graphite fiber reinforced resin composite material... significantly reduces wear and friction
Implementation Method 2
a wiping apparatus for removing a liquid, such as coolant, from the surface of the strip
Data Source
AI summary
A wiping apparatus for removing a liquid from a surface of a strip of metal being conveyed includes a wiping member having a flat face disposed to be contactable with the surface of the strip. The wiping member is formed from a graphite fiber reinforced resin composite material.