Shaped Abrasive Particle with Dopant Distribution
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Solution Overview
Problem
The industry demands improved abrasive materials and articles with enhanced performance, as existing technologies for producing shaped abrasive particles are limited in terms of geometry, durability, and efficiency.
Innovation Solution
The method involves forming shaped abrasive particles by extruding a ceramic-based mixture into a specific form, applying a dopant material to the exterior surface, and processing it to create particles with distinct dopant distributions and microstructures, allowing for tailored geometries and properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If traditional fusion, sintering, or chemical ceramic processes are used to produce abrasive particles, then particles can be formed with basic shapes, but the geometry control and performance optimization are limited
Solution Approach 1:
The patent applies local quality by creating non-uniform dopant distributions within the abrasive particle structure. Different regions of the particle (core, mantle, surface) contain different dopant concentrations and types, allowing each region to contribute different properties that collectively optimize overall particle performance for specific abrasive applications
Solution Approach 2:
The patent employs composite materials by combining multiple dopant materials with the base abrasive material in a structured configuration. The composite structure includes a core region, a mantle region with intermediate dopant concentration, and a surface region, creating a multi-phase composite that achieves superior geometric control and performance characteristics compared to homogeneous materials
2Reliability
If dopant material is applied to the exterior surface of the form, then the abrasive particle achieves optimized surface properties, but the manufacturing process complexity increases
Solution Approach 1:
The patent applies preliminary action by incorporating dopant materials into the extruded form structure before final particle formation. The dopant is applied to the exterior surface of the extruded form, and subsequent processing steps (such as heat treatment or sintering) cause the dopant to diffuse and distribute itself throughout the particle structure, pre-establishing the desired non-uniform distribution pattern before the particle is fully formed
Solution Approach 2:
The patent uses the extruded form structure as an intermediary carrier for the dopant material. The form serves as a template that holds the dopant in specific locations during manufacturing, and this intermediary structure is then transformed or removed to create the final abrasive particle with the desired dopant distribution, simplifying the overall manufacturing process
3Productivity
If shaped abrasive particles are produced with specific geometries, then material removal efficiency improves, but the manufacturing precision requirements increase
Solution Approach 1:
The patent applies self-service by designing a manufacturing process where the extruded form structure itself guides the formation of the final particle geometry. The form acts as a self-contained template that automatically imparts the desired shape characteristics during the extrusion and subsequent processing steps, reducing the need for additional precision machining or shaping operations
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
This approach enables the creation of abrasive particles with optimized geometries and dopant distributions, enhancing their performance and versatility for use in various abrasive applications, such as bonded and coated abrasives, while improving material removal efficiency and durability.
Implementation Method 1
forming a shaped abrasive particle by extruding a mixture into a form
Data Source
AI summary
A method of forming a shaped abrasive particle including extruding a mixture into a form, applying a dopant material to an exterior surface of the form, and forming a precursor shaped abrasive particle from the form.