Dry and Wet Retroreflectometer EN ISO 20471
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The Dry and Wet Retroreflectometer, also known as the Dry and Wet Sand Abrasive Wear Testing Machine, is designed to evaluate the wear resistance of materials under simulated dry and wet sand abrasive environments. By replicating real working conditions, this equipment provides quantitative data on the durability and performance of various materials. It is widely applicable in material research and development, industrial production, and product quality control.
Application
This machine is suitable for a broad range of applications, including:
(1) Material Research and Development: Evaluate wear resistance of new materials, wear-resistant coatings, and industrial components to guide material design and optimization.
(2) Industrial Production: Test parts such as rubber components, protective coatings, and metal surfaces to ensure product durability and reliability.
(3) Quality Control: Assess the wear resistance of finished products, identify substandard items, and guarantee consistent product performance before market release.
(4) Extended Applications: Can be used for testing abrasion resistance of plastics, composite materials, polymer coatings, and safety textiles.
Specific products tested include: rubber wheels, industrial gears, protective helmets, reflective safety materials, plastic parts, and coated metals.
Standards
The machine complies with multiple international and national standards, including:
(1) EN ISO 20471:2013 – High-visibility clothing standards (reflective testing)
(2) ANSI/ISEA 107-2015 – American National Standard for High-Visibility Safety Apparel
(3) GB 20653-2006 – Chinese high-visibility safety clothing
(4) GB/T 18833 – Chinese abrasion-resistant material testing standard
(5) ASTM G65 – Standard test method for abrasive wear by dry sand/rubber wheel
(6) ASTM G105 – Standard test method for rubber wheel abrasion in wet sand conditions
(7) JB/T 7705 – China Machinery Industry Standard for loose abrasive particle wear testing
(8) JB/T 9396 – China Machinery Industry Standard for sample fixture design and test requirements
Parameters
| Parameter | Specification |
|---|---|
| Light source | Standard Light A, 2856K |
| Illuminometer | 0.01 lux – 200 klux |
| Optical detector angular aperture | ≤12′ |
| Observation angle (α) | 12′ – 2°, adjustable, accuracy 6′ |
| Angle of incidence (β) | 0° – 40°, adjustable, accuracy 1° |
| Sample holder | Accurate positioning between first spindle (β1) and second spindle (β2) |
| Distance from detector to sample | 15 m (requires darkroom), laser rangefinder configured |
| Nozzle diameter | 1.19 mm (conical and steady water column) |
| Nozzle distance to sample | 1000 mm |
| Sample size | 150 × 150 mm or 50 × 50 mm |
| Spray water speed | 284 mm/h |
| Timer | 0 – 99.99 min, accuracy 0.01 min |
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