Shaped Abrasive Particles Reduce Loading in Coated Abrasives
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Solution Overview
Problem
Conventional coated abrasive articles face limitations in cost, performance, and lifespan, with issues related to loading, surface finish, and raw material usage.
Innovation Solution
A coated abrasive article featuring a continuous backing layer with shaped abrasive particles and a reduced amount of abrasive mineral, optimized resin application to maximize particle orientation and minimize loading, resulting in improved cut, longer life, and lower costs without compromising surface finish.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional coated abrasive article uses a high amount of abrasive mineral, then the cut performance is improved, but the loading increases and lifespan decreases
Solution Approach 1:
The patent changes the physical and chemical parameters of the abrasive particles by using shaped abrasive particles with specific geometries (aspect ratios, angles, and configurations) rather than traditional irregularly shaped particles. This parameter change allows for optimized cutting performance while reducing the total amount of abrasive mineral needed, thereby extending article lifespan.
Solution Approach 2:
The patent creates a composite structure by combining shaped abrasive particles with a binder material in a specific configuration. The binder holds the shaped particles in an oriented arrangement that maximizes cutting efficiency, allowing for reduced abrasive mineral content while maintaining or improving cut performance and extending article life.
2Reliability
If a traditional coated abrasive article uses more abrasive mineral, then the cut performance is improved, but the raw material cost increases
Solution Approach 1:
The patent changes the parameters of abrasive particles from traditional irregular shapes to specifically shaped particles with controlled geometries. This allows for more efficient material removal per particle, reducing the total quantity of abrasive mineral required while maintaining cut performance, thereby lowering raw material costs.
Solution Approach 2:
The patent extracts and eliminates filler materials from the traditional abrasive article composition. By using shaped abrasive particles that are more efficient at cutting, the article achieves comparable or superior performance without the need for additional filler materials, reducing raw material usage and cost.
3Reliability
If a traditional coated abrasive article uses more abrasive mineral, then the cut performance is improved, but the surface finish quality deteriorates due to loading
Solution Approach 1:
The patent changes the shape parameters of abrasive particles to optimized geometries that reduce loading during the abrading process. The shaped particles maintain sharper edges and more consistent cutting action, preventing the dulling and loading that occurs with traditional particles, thereby maintaining both cut performance and surface finish quality.
Solution Approach 2:
The patent uses a reduced amount of abrasive mineral (partial action) compared to traditional articles, but the shaped particles are distributed and oriented to provide sufficient cutting action throughout the article's life. This partial usage of abrasive material avoids the overloading problem while maintaining adequate cut performance and surface finish.
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 solution enhances the abrasive article's performance by maintaining equivalent surface finish while reducing raw material usage and production costs, with improved cut and extended lifespan.
Implementation Method 1
coated abrasive article... improved cut... abrading an uncoated metal workpiece
Data Source
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AI summary
An open coat abrasive article includes a backing having first and second opposed major surfaces, a make coat resin on at least one major surface of the backing, abrasive particles arranged on the backing at least partially embedded in the make coat resin, and a size coat resin on the first resin and the abrasive particles, wherein the shaped abrasive particles have an average peak count of no greater than about 40,000 per 24 in2. A method of abrading in a body-in-white application is also disclosed.