Adhesive-Bonded Steel Cladding for Abrasive Wear Replacement
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Solution Overview
Problem
Current steel cladding systems for protecting machinery and vehicles from abrasive wear are either costly, complex to install and maintain, or lack sufficient wear resistance, often requiring perforations that weaken structural components and complicating replacement processes.
Innovation Solution
A cladding system using wear-resistant steel plates bonded with a mono-component adhesive based on modified silane polymers, which provides strong adhesion to withstand impact and friction while allowing easy separation at elevated temperatures, facilitating simple installation and replacement without the need for bolts or rivets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If wear-resistant steel plates are attached by welding, bolts, or rivets, then strong mechanical attachment is achieved, but structural components are weakened by perforations and installation becomes complex
Solution Approach 1:
The patent replaces mechanical attachment systems (welding, bolts, rivets) with a chemical bonding system using adhesive. This substitution eliminates the need for perforations that weaken structural components while simplifying installation. The adhesive forms a chemical bond between the wear-resistant steel plates and the substrate, providing strong attachment without the complexity and structural damage associated with mechanical fastening methods.
2Ease of operation
If magnetic elements are used to attach cladding plates, then installation is simplified without perforations, but cost increases and stability against impact and friction forces is insufficient
Solution Approach 1:
The patent replaces magnetic attachment with chemical bonding using adhesive. This provides superior reliability by creating a strong chemical bond that can withstand impact and friction forces from abrasive materials, while maintaining the simplicity of installation without perforations. The adhesive bonding system offers both ease of operation and high reliability, overcoming the limitations of magnetic attachment.
3Reliability
If wear-resistant plates are installed with permanent attachment, then protection against abrasive wear is effective, but replacement of worn plates becomes complex and time-consuming
Solution Approach 1:
The patent employs temperature as a controllable parameter to change the adhesive's bonding characteristics. During normal operation, the adhesive maintains strong bonding for effective protection. When replacement is needed, heating the adhesive above its glass transition temperature (Tg) reduces its bonding strength, allowing easy removal of worn plates. This parameter change enables both reliable protection during use and easy replacement when needed.
Solution Approach 2:
The adhesive's bonding behavior changes periodically based on temperature exposure. During normal service conditions, the adhesive provides strong permanent-like attachment. Periodic heating above Tg temporarily reduces bonding strength to facilitate plate replacement, after which the adhesive returns to its high-bonding state upon cooling. This periodic change in bonding characteristics enables both effective protection and easy maintenance.
4Reliability
If steel substrate gauge thickness is increased to extend lifespan, then wear resistance improves, but payload weight capacity decreases and cost increases
Solution Approach 1:
The patent creates a composite structure combining a thin base steel substrate with wear-resistant steel plates bonded by adhesive. This composite approach provides enhanced wear resistance and extended lifespan without increasing the weight of the base substrate, thereby maintaining payload weight capacity. The wear-resistant plates serve as a protective layer that extends component life while keeping the overall structure lightweight.
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 system offers a cost-effective and efficient solution for protecting machinery and vehicles from abrasive wear by ensuring strong adhesion during use and easy removal of worn plates, reducing material damage and operational costs, while adapting to diverse surface geometries and wear levels.
Implementation Method 1
said wear-resistant steel plates are bonded to said substrate by an adhesive, wherein said adhesive (a) maintains the wear-resistant steel plates in their position withstanding impact forces and friction
Implementation Method 2
facilitates separation of the wear-resistant steel plates from the substrate when temperature of said adhesive is raised to a level above 350° C.
Data Source
AI summary
A cost-effective cladding system for substrates subject to abrasive wear, comprising a plurality of wear-resistant steel plates having a predetermined shape and size to better fit the protected surface, flat or curved, such as haul bodies of trucks for minerals transport, bins, ducts, conveyors and similar equipment, used in several industrial fields, for example in the transportation, mining, steelmaking, agricultural and construction industries. The wear-resistant steel plates are attached to the substrate by means of an adhesive with sufficient bonding strength against shear and peeling to maintain the steel plates in their place withstanding the impact and frictional forces. The adhesive also facilitates replacement of the wear-resistant steel plates by reducing the adhesive force by a temperature increase. The adhesive is of the type of mono-component of silane and the wear-resistant steel plates are made of steel 15B30, or any steel of similar characteristics, having a hardness above 45 HRC Rockwell C after tempering heat treatment and preferably having mainly martensitic microstructure, and optionally carbonitrided.