Abrasive Wire Saw Tacking Layer Design for Wear Resistance
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Solution Overview
Problem
Conventional abrasive wire saws face challenges such as high production costs due to time-consuming electroplating and sintering processes, reduced tensile strength leading to premature failure, and rapid wear of resin-bonded abrasives when cutting hard materials, particularly in the electronics industry where kerf loss is significant.
Innovation Solution
An abrasive article comprising a substrate with a tacking layer of tin, a first type of abrasive particle, and a second type of abrasive particle, where the tacking layer is bonded to the substrate and the abrasive particles are securely attached using a bonding layer, enhancing mechanical durability and wear resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If electroplating or sintering processes are used to attach abrasive particles, then the abrasive particles are securely attached, but the production time and cost increase significantly
Solution Approach 1:
The patent extracts the abrasive particles from the conventional electroplating/sintering process and attaches them directly to the wire using a simplified method involving adhesive application and ultrasonic welding, eliminating the need for complex electroplating or sintering equipment and processes
Solution Approach 2:
The patent replaces the electrochemical (electroplating) or thermal (sintering) attachment mechanisms with a mechanical attachment system using adhesive bonding and ultrasonic welding, which are faster and more suitable for high-volume production
2Reliability
If brazing is used to attach abrasive particles, then secure attachment is achieved, but the tensile strength of the wire saw is reduced making it susceptible to breaking
Solution Approach 1:
The patent removes the brazing process entirely from the wire saw fabrication and replaces it with adhesive bonding that does not compromise the wire's metallurgical structure or tensile strength
Solution Approach 2:
The patent introduces an adhesive layer as an intermediary between the wire and abrasive particles, providing secure attachment without the need for high-temperature brazing that weakens the wire
3Ease of manufacture
If resin is used to bind abrasives to the wire, then easy manufacture is achieved, but the abrasives wear quickly and are lost before useful life is realized
Solution Approach 1:
The patent changes the bonding mechanism from chemical bonding via resin to mechanical bonding via ultrasonic welding and adhesive bonding, which creates a stronger, more durable attachment that withstands the stresses of cutting hard materials
Solution Approach 2:
The patent uses a composite bonding system combining adhesive materials with ultrasonic welding to create a durable bond between the wire and abrasive particles that resists wear and maintains attachment throughout the service life
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 improves the mechanical durability and wear resistance of abrasive articles, reducing premature failure and extending the lifespan of abrasive tools when cutting hard materials, particularly in the electronics industry.
Implementation Method 1
a tacking layer consisting essentially of tin... the tacking layer is bonded to the substrate
Data Source
AI summary
An abrasive article including a substrate having an elongated body, a tacking layer overlying the substrate, a first type of abrasive particle overlying the tacking layer, a second type of abrasive particle different than the first type of abrasive particles overlying the tacking layer, and a bonding layer overlying at least a portion of one of the first type of abrasive particle and the second type of abrasive particle and the tacking layer.