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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