Sliding Member Resin Coating Dimple Formation
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Solution Overview
Problem
Existing sliding members in transportation and rotating machines face issues with insufficient oil distribution under high surface pressure, leading to increased frictional resistance, wear, and seizure due to the difficulty in forming uniform oil films and the cumbersome process of creating dimples on resin surfaces for improved lubrication and wear resistance.
Innovation Solution
A sliding member is created by coating a mixture of thermosetting and thermoplastic resins on a substrate, where the mixed resin is heat-treated to form a resin coating layer with dimples, eliminating the need for a separate dimple forming apparatus and simplifying the process while enhancing wear resistance and sliding characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a resin coating is applied to improve sliding characteristics, then wear resistance and seizure resistance are improved, but the oil holding capability is insufficient under high surface pressure
Solution Approach 1:
The patent applies shot peening treatment to the resin coating surface to create microdimples (porous structure) that enhance oil holding capability. The microdimples formed by impacting steel shots into the resin surface create reservoirs for lubricating oil, allowing the coating to maintain both wear resistance and improved oil retention under high surface pressure conditions
2Reliability
If microdimples are formed by shot peening to improve oil holding capability, then wear resistance and seizure resistance are improved, but the process becomes complex and requires additional equipment
Solution Approach 1:
The patent combines the resin coating application process with shot peening treatment into an integrated manufacturing process. By applying the resin coating first and then performing shot peening to form microdimples, the invention merges two separate processes (coating and dimple formation) into a sequential workflow that achieves both protective coating and oil reservoir formation without requiring complex additional equipment
3Reliability
If microdimples are formed by laser processing to improve oil holding capability, then wear resistance and seizure resistance are improved, but the manufacturing cost and process complexity increase
Solution Approach 1:
The patent replaces expensive laser processing equipment with shot peening technology that uses relatively inexpensive steel shots as the processing medium. The steel shots serve as a disposable or reusable tool that impacts the resin surface to form microdimples, eliminating the need for costly laser systems while achieving the same functional outcome of improved oil holding capability
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 effectively forms dimples in the resin coating layer, improving wear resistance, seizure resistance, and sliding characteristics by utilizing the thermosetting and thermoplastic resin combination, which synergistically enhances oil holding capability and reduces frictional resistance without requiring additional equipment.
Implementation Method 1
heat-treating to thereby form a film formed of a resin coating layer and dimples formed in a resin surface
Implementation Method 2
the liquid-form mixed resin is coated and then heat-treated to thereby form a film formed of a resin coating layer and dimples formed in a resin surface
Data Source
AI summary
A sliding member having a base and a coating on the surface of the base, the coating is formed of a mixed resin obtained by mixing a thermosetting resin and a thermoplastic resin. The mixed resin is a mixture of a thermosetting resin that is in a liquid state before mixing and a thermoplastic resin that is in the form of solid particles. By applying and heat-treating the mixed resin that is in a liquid state, a coating film formed on the surface of the base is a resin coating layer and dimples in the resin surface.