Shaped Abrasive Particles via Sheet Sectioning
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Solution Overview
Problem
The industry demands improved abrasive materials and articles with specific geometries that current technologies, such as fusion, sintering, and chemical ceramic methods, are unable to efficiently produce, particularly for shaped abrasive particles with complex two-dimensional shapes like polygons, ellipsoids, and alphanumeric characters.
Innovation Solution
A method of forming shaped abrasive particles involves creating a ceramic material mixture with a high solids content, forming it into a sheet, sectioning it mechanically to create particles with specific two-dimensional shapes, and processing them to achieve desired dimensions and features, including complex shapes like polygons and alphanumeric characters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional fusion, sintering, or chemical ceramic methods are used to produce abrasive particles, then the particles can be formed with basic geometries, but the ability to efficiently produce particles with complex two-dimensional shapes (polygons, ellipsoids, alphanumeric characters) is insufficient
Solution Approach 1:
The invention segments the shaping process into two distinct stages: first forming a continuous sheet with the desired complex two-dimensional pattern, then sectioning the sheet into individual particles. This segmentation allows the complex shaping to be done once in the sheet stage, and subsequent particles are efficiently produced by simple sectioning, resolving the contradiction between shape complexity and production efficiency.
Solution Approach 2:
The invention performs preliminary action by forming the complete complex two-dimensional shape in the sheet before sectioning. The sheet is shaped with all desired features (polygons, ellipsoids, alphanumeric characters) in advance, so that when sectioned, each particle inherits the precise complex shape without requiring additional processing. This preliminary shaping resolves the contradiction by enabling complex geometries to be efficiently reproduced across multiple particles.
2Reliability
If abrasive particles are formed with specific complex geometries, then performance in material removal operations is enhanced, but the manufacturing process becomes more difficult
Solution Approach 1:
The invention transitions from forming three-dimensional complex shapes directly to forming a two-dimensional sheet with the desired pattern, then sectioning it. By working in two dimensions during the shaping stage and using sectioning to create the third dimension, the manufacturing process becomes simpler while still achieving the required complex geometries for enhanced performance.
Solution Approach 2:
The invention replaces complex mechanical forming processes (required for direct three-dimensional shape creation) with a simpler sheet formation process followed by mechanical sectioning. This substitution of the forming mechanism makes manufacturing easier while still producing particles with specific complex geometries that enhance material removal performance.
3Productivity
If abrasive particles with precise shapes and dimensions are produced, then efficiency in grinding and polishing operations is improved, but the complexity of the forming process increases
Solution Approach 1:
The invention segments the forming process into sheet creation and particle sectioning, allowing precise complex two-dimensional shapes to be established once in the sheet. This segmentation enables efficient production of particles with precise shapes for improved grinding and polishing efficiency, without requiring complex processes for each individual particle.
Solution Approach 2:
The invention creates a universal sheet that can be sectioned into multiple particles, all inheriting the same precise complex two-dimensional shape. This universal approach allows efficient production of numerous particles with consistent precise geometries, improving grinding and polishing efficiency without proportionally increasing process complexity.
Data Source
Figure 1A~1B
Figure 2
Figure 3~4B
AI summary
A method of forming a mixture including a ceramic material into a sheet, sectioning at least a portion of the sheet using a mechanical object and forming at least one shaped abrasive particle from the sheet, such that the at least one shaped abrasive particle can have a two-dimensional shape as viewed in a plane defined by a length and a width of the shaped abrasive particle selected from the group consisting of polygons, ellipsoids, numerals, Greek alphabet characters, Latin alphabet characters, Russian alphabet characters, complex shapes having a combination of polygonal shapes, and a combination thereof.