Abrasive Wire Structure With Oscillating Grit Distribution
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Solution Overview
Problem
Conventional abrasive wire saws for cutting crystalline materials in the electronics industry face issues with high kerf loss, productivity, and premature failure due to electroplating, sintering, and resin bonding methods, which are time-consuming and costly, and result in reduced tensile strength and rapid wear.
Innovation Solution
An abrasive article with a substrate having elongated body and varying abrasive particle content along its length, achieved by depositing a slurry containing abrasive particles and a precursor material, allowing for oscillating or predictable content variations to enhance cutting efficiency and durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If electroplating or sintering operations are used to attach abrasive particles to wire saws, then the abrasive particles are securely attached, but the production process becomes time-consuming and costly
Solution Approach 1:
The patent extracts the time-consuming electroplating and sintering operations from the wire saw manufacturing process by directly embedding abrasive particles into the wire structure during fabrication, eliminating these separate attachment steps while maintaining secure particle attachment
Solution Approach 2:
The patent merges the wire formation and abrasive particle attachment processes into a single integrated manufacturing step, where abrasive particles are incorporated directly into the wire structure during extrusion or drawing, combining what were previously separate operations
2Ease of manufacture
If resin is used to bind abrasive particles to the wire saw, then the manufacturing process is simplified, but the wire saw wears quickly and abrasives are lost before useful life is realized
Solution Approach 1:
The patent eliminates the use of resin binders entirely by creating a structure where abrasive particles are permanently integrated into the wire matrix through mechanical interlocking and material bonding, making the abrasive layer as durable as the wire itself rather than a separate consumable component
Solution Approach 2:
The patent creates a composite wire structure where abrasive particles are embedded within and bonded to the wire matrix material, forming an integrated composite structure that combines the strength of the wire with the cutting capability of the abrasives, eliminating the need for separate binder materials
3Reliability
If chemical bonding processes such as brazing are used to attach abrasive particles, then strong attachment is achieved, but the tensile strength of the wire saw is reduced making it susceptible to breaking
Solution Approach 1:
The patent replaces chemical bonding processes like brazing with a mechanical embedding approach where abrasive particles are physically incorporated into the wire structure during formation, using mechanical interlocking and material flow rather than chemical bonds to secure particles, thereby preserving wire tensile strength
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 solution provides improved cutting performance and extended wire life by maintaining abrasive particle distribution and mechanical durability, reducing wear and increasing productivity in cutting hard materials.
Implementation Method 1
depositing a slurry comprising a mixture of precursor material and abrasive particles onto the elongated body to form a coated substrate
Data Source
AI summary
An abrasive article comprising a substrate having an elongated body and abrasive particles attached to the elongated body, the content of the abrasive particles oscillates along the length of the body between a minimum and maximum value, and the minimum content is greater than 0.