Compressor Swash Plate Laser Texturing for Resin Adhesion
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Solution Overview
Problem
Conventional sliding members experience inadequate adhesion between the substrate and resin, leading to peeling issues under harsh load conditions due to insufficient surface roughening by laser irradiation, which affects durability.
Innovation Solution
Optimizing laser light energy intensity per unit area and configuring hollows vertically to enhance the anchor effect between the substrate and resin, using specific shapes and depths to ensure robust adhesion and prevent resin peeling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If laser light is irradiated to roughen the substrate surface, then surface roughness is improved, but adhesion between substrate and resin is insufficient causing peeling
Solution Approach 1:
The patent optimizes laser irradiation parameters including energy intensity per unit area (0.03 to 0.15 J/mm²), wavelength (1064 nm), pulse duration (5 to 20 ns), and irradiation density (10 to 50 pulses/mm²) to achieve controlled hollow formation that enhances resin adhesion while preventing substrate damage and peeling
Solution Approach 2:
The patent introduces vertical hollow structures (depth 5-50 μm) on the substrate surface in addition to surface roughness, creating a three-dimensional anchor effect that mechanically interlocks the resin and significantly improves adhesion strength
2Reliability
If laser energy intensity is increased to enhance surface roughening, then adhesion is improved, but substrate damage occurs
Solution Approach 1:
The patent precisely controls laser energy intensity within the range of 0.03 to 0.15 J/mm², which is sufficient to create adherent hollow structures without exceeding the threshold that would cause substrate melting, cracking, or other damage
Solution Approach 2:
The patent applies laser irradiation with controlled excessive pulses (10-50 pulses/mm²) to ensure complete hollow formation and resin penetration, while the energy per pulse remains below the damage threshold through optimized parameters
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 enhanced adhesion between the substrate and resin film results in improved durability and resistance to peeling even under prolonged sliding and harsh load conditions, maintaining effective frictional properties and wear resistance.
Implementation Method 1
by irradiating the laser light in which the energy intensity per unit area is optimized to the substrate
Implementation Method 2
a hollow toward the vertical direction of the base material is able to be not enough, because the anchor effect between the base material and the resin coated at the base material is not achieved
Data Source
Figure 1(a)~1(c)
Figure 2(a)~2(b)
Figure 3(a)~3(d)
AI summary
The present invention provides the sliding member, method for manufacturing sliding member, and compressor swash plate using sliding member in which adhesion between the substrate and the resin is enhanced, and which has the excellent durability whereby peeling of the resin film from the substrate does not occur due to prolonged sliding even under harsh load conditions. The sliding member (10) provides a substrate (11) irradiated laser light with energy intensity per unit area of 0.053 J/mm2 or more and configured an uneven part (13) formed toward a vertical direction by the irradiated laser light and a melted and solidified portion on the uneven part (13) and a resin film (12) including solid lubricant and a binder resin on the substrate (11).