Sliding Member Recess Bonding Resin Peeling
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Solution Overview
Problem
The existing methods for bonding a resin layer to a metal base are limited, requiring a change in the type of porous sintered layer when switching metal backings, which is difficult due to the need for new sintering facilities and conditions, and result in the resin layer easily peeling off.
Innovation Solution
A slide member with a metal or ceramic base featuring an impregnated layer formed by recesses on its surface, allowing the resin layer to be directly secured without a porous sintered layer, using machining techniques to control the recess shape and size for enhanced bonding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a porous sintered layer is provided on the metal base to bond the resin layer, then the resin layer bonding is improved, but the device complexity and manufacturing flexibility deteriorate due to limited material combinations and fixed sintering conditions
Solution Approach 1:
The invention extracts and eliminates the porous sintered layer from the conventional structure. Instead of using a separate porous intermediate layer, the patent directly forms recesses on the metal base surface to provide mechanical interlocking for the resin layer, thereby removing the need for sintering facilities and material compatibility constraints
Solution Approach 2:
The invention changes the bonding mechanism from chemical/physical adsorption in porous structures to mechanical interlocking through controlled recess geometries. By varying recess parameters (depth, width, shape, distribution), the bonding can be optimized for different metal bases without changing the fundamental structure or requiring new facilities
2Adaptability or versatility
If the type of porous sintered layer is changed to match different metal backings, then the bonding compatibility is improved, but the manufacturing flexibility deteriorates due to the need for new sintering facilities
Solution Approach 1:
The recess structure serves multiple functions universally across different metal bases: it provides mechanical interlocking, controls resin flow, and creates anchoring effects. This universal approach works with any metal base material without requiring material-specific porous layers or specialized sintering facilities
Solution Approach 2:
The invention replaces the thermal/chemical sintering process with a mechanical machining process to create surface recesses. This substitution allows the same facility to process any metal base material without needing to change temperature profiles or chemical environments required for sintering different materials
3Ease of manufacture
If the resin layer is applied directly on the metal base without a porous sintered layer, then the manufacturing simplicity is improved, but the bonding strength deteriorates due to peeling
Solution Approach 1:
The recesses are pre-formed on the metal base surface before the resin layer is applied. This preliminary action creates mechanical anchors that will interlock with the resin, preventing peeling while maintaining the simplicity of direct resin application without porous intermediate layers
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 method enables easy formation and secure attachment of the resin layer on the base, providing consistent bonding force and preventing peeling, while allowing for flexible base material changes without requiring new sintering facilities.
Implementation Method 1
a resin layer impregnating and covering the impregnated layer
Data Source
AI summary
A slide member provided with a base, an impregnated layer, and a resin layer. The base made of metal or ceramic. The impregnated layer is defined on a surface portion of a sliding side of the base by forming a recess on the base. The resin layer impregnates the impregnated layer so as to cover a sliding side surface of the base.