Abrasive Particles with Microridges via Gel Extrusion
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Solution Overview
Problem
Current methods for producing abrasive particles lack the ability to create particles with specific geometries and features that enhance their performance in material removal operations, such as grinding and polishing, due to limitations in shape control and feature distribution.
Innovation Solution
A method for forming abrasive particles involving a ceramic gel mixture with controlled rheological properties, extruded through a die to create particles with defined shapes and features, such as microridges and protrusions, using a process that includes modification and controlled drying to achieve precise cracking and shape formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If conventional fusion, sintering, or chemical ceramic processes are used to produce abrasive particles, then particles can be formed with basic shapes, but the ability to create particles with specific geometries and features that enhance performance is limited
Solution Approach 1:
The patent applies preliminary action by forming a gel structure before final particle formation. The gel is extruded through a die with specific geometric features (protrusions, recesses, microridges) that are transferred to the particle surface during the drying and cracking process. This preliminary structuring of the gel allows precise control over the final particle geometry and surface features, resolving the contradiction between basic shape formation and advanced shape control.
Solution Approach 2:
The patent utilizes parameter changes by controlling the rheological properties of the ceramic gel mixture and the drying conditions. By adjusting gel viscosity, drying rate, and crack propagation conditions, the process transforms the gel structure into specific particle geometries with controlled surface features. This parameter control enables precise shape formation that conventional methods cannot achieve.
2Reliability
If abrasive particles are formed with specific features such as microridges and protrusions, then cutting efficiency is enhanced, but the complexity of the manufacturing process increases
Solution Approach 1:
The patent applies self-service by using the gel's own rheological properties and the drying-induced cracking process to automatically form the desired surface features. The microridges and protrusions are not added through complex post-processing but emerge naturally from the controlled drying and crack propagation of the extruded gel. This self-organizing process creates functional surface features without requiring additional manufacturing steps, resolving the contradiction between enhanced cutting efficiency and process complexity.
3Reliability
If abrasive particles are produced with consistent geometries and feature distribution, then performance consistency is improved, but the manufacturing process requires greater control
Solution Approach 1:
The patent applies local quality by creating specific surface features (microridges, protrusions, recesses) at particular locations on the particle surface through the die geometry. The die is designed with localized features that are transferred to corresponding regions of each particle during extrusion and drying. This localized structuring ensures consistent feature distribution across all particles, improving performance consistency while the controlled process maintains the required manufacturing precision.
Solution Approach 2:
The patent utilizes periodic action through the regular extrusion of gel through the die and the controlled propagation of cracks during drying. The periodic extrusion ensures each particle receives the same geometric imprints from the die, while controlled periodic crack propagation creates consistent surface features. This periodic process repetition guarantees uniform feature distribution and geometry across the particle population, achieving both performance consistency and manufacturing precision.
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 method enables the production of abrasive particles with tailored geometries and features, improving their performance in material removal operations by enhancing their cutting efficiency and consistency.
Implementation Method 1
A method for forming abrasive particles involving a ceramic gel mixture with controlled rheological properties, extruded through a die to create particles with defined shapes and features
Implementation Method 2
Abrasive articles incorporating abrasive particles are useful for various material removal operations including grinding, finishing, polishing
Data Source
AI summary
An abrasive particle having a body including a first major surface, a second major surface opposite the first major surface, and a side surface extending between the first major surface and the second major surface, such that a majority of the side surface comprises a plurality of microridges.