Shaped Abrasive Particles for Consistent High-Speed Grinding
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Solution Overview
Problem
Current abrasive particles and articles lack improved performance, life, and efficacy in material removal operations, particularly in high-speed grinding processes, due to inconsistent shape and edge arrangements, leading to variable material removal rates and efficiency.
Innovation Solution
The use of shaped abrasive particles formed through a process involving a ceramic material gel with specific rheological characteristics, extruded through a screen with controlled pressure and orientation, resulting in particles with consistent two-dimensional and three-dimensional shapes, enhancing material removal rates and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional abrasive particles are used, then material removal operations can be performed, but the performance, life, and efficacy are insufficient due to inconsistent shape and edge arrangements
Solution Approach 1:
The patent changes the geometric parameters of abrasive particles by extruding ceramic gel through screens with specific aperture sizes and shapes (e.g., 40-100 mesh, triangular, rectangular patterns). This controls the particle shape, edge arrangement, and dimensional uniformity, achieving consistent material removal rates and resolving the contradiction between reliability and manufacturing precision.
2Productivity
If high material removal rates are achieved, then productivity increases, but maintaining constant G-ratio across the range becomes challenging
Solution Approach 1:
The patent optimizes particle geometry parameters (shape, size, edge arrangement) through controlled extrusion to achieve material removal rates of 6-25 in³/min/in while maintaining stable G-ratio. The consistent particle morphology ensures predictable grinding behavior across the productivity range, resolving the contradiction between productivity and reliability.
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 achieves high-speed, high-efficiency grinding with consistent material removal rates between 6 and 25 in3/min/in, maintaining a stable G-ratio across this range, and improving the overall performance and life of abrasive articles.
Implementation Method 1
extruded through a screen with controlled pressure and orientation
Implementation Method 2
method of removing material from one or more workpieces includes moving a coated abrasive article comprising a plurality of shaped abrasive particles relative to a surface of the one or more workpieces
Data Source
AI summary
A method of removing material from one or more workpieces including moving a coated abrasive article having a plurality of shaped abrasive particles relative to a surface of the one or more workpieces at high material removal rates.