ISO 20566 Wheel Hub Scratch Resistance Laboratory Simulated Car Wash Testing Machine
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ISO 20566 Wheel Hub Scratch Resistance Laboratory Simulated Car Wash Testing Machine is suitable for testing and comparative evaluation of the scratch resistance of various coating systems and product surfaces using laboratory car wash methods. Typical applications include but are not limited to:
Automotive wheels and wheel surface coatings
Automotive exterior components and their surface coatings
Pigmented paint and clearcoat systems
Metal and alloy surface coatings
Functional and decorative coatings
Comparative durability testing of novel coating materials
Coating formulation screening and process validation during R&D
Laboratory quality control and type testing
Standards
ISO 20566:2020 Paints and varnishes - Determination of scratch resistance of coating systems by laboratory car wash
ISO 20566:2021 Paints and varnishes - Determination by laboratory scale car wash
ISO 13076 Visual assessment of coating surface appearance
ISO 2813 - Determination of gloss of coatings
ISO 13803 - Determination of haze of coatings
ISO 7724 - Colorimetry and evaluation of color difference
PV 3.3.3 - Specification for Scratch Resistance Testing of Automotive Interior/Exterior Surface Materials
MBN 10494-5 - Scratch Durability Testing of Automotive Materials - Part 5
Parameters
| Item | Technical Parameter |
|---|---|
| Washing Brush Diameter | 1000 ± 40 mm |
| Washing Brush Width | 300 mm |
| Washing Brush Material | Ethylene |
| Washing Brush Profile | X-type splicing |
| Bristle Diameter | 0.8 ± 0.2 mm |
| Bristle Length | 440 ± 20 mm |
| Bristle Penetration Depth | 100 ± 20 mm |
| Brush Rotation Speed | 127 ± 5 RPM |
| Brush Rotation Direction | Opposite to the direction of test plate bracket travel |
| Stainless Steel Nozzle Angle | 65° |
| Spray Flow Rate | (2.2 ± 0.2) L/min (at 300 ± 50 kPa) |
| Test Plate Feed Speed | (5 ± 0.2) m/min |
| Motion Mode | Nozzle and brush work alternately, direction opposite to test plate travel |
| Washing Medium | Washing suspension containing silicon dioxide powder |
| Suspension Ratio | (150 ± 0.05) g silicon dioxide powder per liter of water |
| Average Particle Size of Silicon Dioxide | 24 μm |
| Operating Environment Temperature | 20 ~ 30 °C |
| Washing Solution Temperature | 15 ~ 30 °C |
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