Guide Ring with Oxide Layer for Yarn Slidability
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Solution Overview
Problem
Guide rings used in fishing rods and textile machines face challenges with slidability, leading to potential yarn abrasion and cutting due to high-speed movement and foreign matter contact, necessitating improved performance.
Innovation Solution
A guide ring with a non-oxide ceramic base member and an oxide layer on a recessed portion, featuring a high water repellency oxide layer to reduce sliding resistance and reinforce stress-concentrated areas, enhancing slidability and durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional guide ring material is used, then the structure is simple, but the slidability is insufficient causing yarn abrasion and cutting
Solution Approach 1:
The guide ring employs a composite structure consisting of a non-oxide ceramic base member (such as silicon carbide or silicon nitride) and an oxide layer (such as silicon oxide) formed on its surface. This composite material approach combines the high strength and hardness of non-oxide ceramics with the low friction and wear resistance of oxide layers, thereby achieving excellent slidability and preventing yarn abrasion while maintaining structural integrity
Solution Approach 2:
The invention changes the surface properties of the guide ring by forming an oxide layer on the non-oxide ceramic base member. This parameter change in surface composition and structure transforms the friction characteristics, reducing the coefficient of friction and improving slidability without compromising the mechanical strength provided by the non-oxide ceramic substrate
2Reliability
If the guide ring surface is made smooth, then slidability improves, but stress-concentrated areas become weaker
Solution Approach 1:
The guide ring features localized oxide layers formed specifically on recessed portions of the non-oxide ceramic base member. This local quality approach applies the low-friction oxide coating only where it is most needed for slidability, while the bulk non-oxide ceramic material maintains its high strength and stress resistance properties throughout the structure
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 guide ring achieves excellent slidability by reducing sliding resistance and reinforcing stress points, preventing yarn damage and maintaining performance over time, even in wet conditions.
Implementation Method 1
a high water repellency oxide layer to reduce sliding resistance
Data Source
AI summary
A guide ring includes a base member and an oxide layer. The base member has a ring shape, is made of a non-oxide ceramic, and includes a recessed portion. The oxide layer contains an oxide as a main component. The recessed portion has a first surface, and the oxide layer is located on the first surface of the recessed portion.