Magnetic Orientation of Abrasive Particles in Structured Articles
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Solution Overview
Problem
There is a continuing need for methods to improve the abrading performance of structured abrasive articles.
Innovation Solution
The method involves orienting abrasive particles within shaped abrasive composites using a magnetic field during the manufacture of structured abrasive articles, specifically utilizing magnetizable abrasive particles aligned substantially perpendicular to the backing surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If abrasive particles are randomly distributed in shaped abrasive composites, then manufacturing is simpler, but abrading performance is insufficient
Solution Approach 1:
The patent applies preliminary action by orienting the abrasive particles within the shaped abrasive composites before the final curing step. A magnetic field is applied to the uncured composite material to align the abrasive particles in the desired orientation, and then the material is cured to lock this orientation in place. This ensures optimal particle alignment for abrading performance without requiring complex post-manufacturing adjustments.
Solution Approach 2:
The patent uses a magnetic field as an intermediary to achieve particle orientation. The magnetic field acts as a mediator that temporarily influences the abrasive particles during the manufacturing process, aligning them without permanent changes to the manufacturing equipment. This intermediary approach simplifies the overall manufacturing system while achieving precise particle orientation.
2Productivity
If abrasive particles are aligned perpendicular to backing surface, then abrading performance is improved, but manufacturing process becomes more complex
Solution Approach 1:
The patent replaces complex mechanical alignment systems with a magnetic field-based approach. Instead of using mechanical fixtures, molds, or complex positioning mechanisms to orient particles, a magnetic field is applied to the abrasive particles during curing. This substitution of mechanical systems with a magnetic field simplifies the manufacturing equipment while achieving the desired perpendicular alignment for optimal abrading efficiency.
Solution Approach 2:
The patent changes the physical state or parameters of the abrasive particles by applying a magnetic field during the curing process. By controlling the magnetic field strength and direction, the particles are oriented in the optimal perpendicular arrangement. This parameter change approach allows for precise control of particle orientation without adding complex mechanical alignment equipment.
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 alignment leads to improved abrading performance by ensuring that the abrasive particles are optimally positioned to engage the workpiece effectively, enhancing the overall efficiency of the abrasive article.
Implementation Method 1
The magnetizable abrasive particles are oriented by a magnetic field applied during manufacture of the structured abrasive articles
Data Source
Figure 1~3A
Figure 4~5
AI summary
A structured abrasive article comprises a plurality of shaped abrasive composites disposed on and secured to a major surface of a backing. The shaped abrasive composites comprise magnetizable abrasive particles retained in an organic binder. On a respective basis, each of the magnetizable abrasive particles has a ceramic body with a magnetizable layer disposed on at least a portion thereof. Methods of making and using the structured abrasive articles are also disclosed.