Gravel Resistant Impact Tester/Stone chip tester，ISO 20567，automatic gravel impact tester

Application

1. Automotive Industry

Vehicle Body Coating Testing: Testing the chip resistance of coatings on car chassis, doors, bumpers, etc., to ensure long-term appearance and corrosion protection during driving.

Windshield and Headlight Protection: Verifying the impact resistance of glass and plastic components to meet safety standards.

New Energy Vehicles: Increased demand for impact testing of battery pack casings and charging pile surface coatings.

Strict industry standards (such as ISO 20567-1. SAE J400) drive testing requirements.

2. Aerospace

Aircraft Engine Components: Testing the ability of blades, air intakes, and other parts to withstand sand and stone impact in high-speed airflow.

Aircraft Fuselage Coatings: Evaluating the durability of aircraft surface coatings in extreme climates (such as deserts and high altitudes).

3. New Energy and Wind Power

Wind Turbine Blades: Testing the impact resistance of blade coatings against wind, sand, and rain erosion to extend service life.

Solar Panels: Verifying the resistance of photovoltaic panel surfaces to hail and dust.

4. Rail Transit

High-speed/Subway Train Bodies: Testing the performance of train body coatings and glass in resisting track debris impact during high-speed operation.

Rail Transit Equipment: Testing of protective layers for signal equipment and overhead line components.

5. Building Materials and Construction Industry

Building Glass Curtain Walls: Simulating wind, sand, and hail impact to test their shatter resistance.

Exterior Wall Coatings and Metal Panels: Evaluating the durability of coatings in outdoor environments.

6. Consumer Electronics and Home Appliances

Mobile Phone/Camera Lenses: Testing the scratch resistance of screen or lens coatings against sand and grit.

Outdoor Electrical Equipment: Verification of weather resistance for devices such as surveillance cameras and drone casings.

Standard Test

ASTM D3170: Coating resistance to gravel impingement.

ISO 20567: Paints and varnishes – Resistance to stone chipping.

SAE J400: Automotive exterior component durability testing.

EN 14425: Aerospace material impact resistance protocols.

Feature

Airflow Control System: Digital regulation of air pressure (0.2–0.8 MPa) and particle velocity for standardized testing.

Adjustable Impact Angle: 0–90° tilt mechanism to simulate horizontal, vertical, or oblique impact angles.

Sample Fixtures: Universal clamps for securing automotive panels, aerospace composites, or building materials up to 500×500 mm.

Touchscreen Interface: Programmable test cycles, air pressure, and impact angles with real-time data logging.

Debris Recycling System: Integrated funnel and vacuum system for automated gravel collection and reuse.

Safety Interlocks: Transparent enclosure with light curtains to halt operation during access attempts.

Parameters

Parameter	Specification
Impact Angle	0–90° adjustable (1° increments)
Particle Velocity	20–120 m/s (adjustable)
Sample Dimensions	Up to 500 × 500 mm
Gravel Size	3–16 mm (customizable)
Air Pressure Range	0.2–0.8 MPa (29–116 psi)
Control System	PLC with 7-inch touchscreen (100 test memory)
Power Supply	220V/50Hz, 500W
Dimensions	800 (L) × 700 (W) × 1.200 (H) mm
Net Weight	150 kg
Safety Rating	CE/ISO 12100 compliant

Accessoriess

Standard accessories

Core test components: Standard friction media (wool felt/cotton cloth), sample fixing clamps, 500g/1000g standard weights.

Control & evaluation tools: LCD digital counter, staining/discoloration gray scale cards (complying with GB/AATCC/ISO standards).

Basic accessories: Power cord, user manual, certificate of conformity, cleaning brush.

Optional accessories

Specialized media: Additional friction pads/cloths, small rubber pads (for specific material testing).

Functional extensions: Light box (for standard light source evaluation), pre-tension adjustment fixtures, vacuum dryer.

Calibration & auxiliary tools: Precision calibration weights, calibration fabrics, liner sandpaper.

Test Procedures

1. Place the test sample into the fixture and secure it.

2. Tilt the fixture to the marked position and lock it.

3. Lock the door of the impact chamber.

4. Pour the prepared crushed stone into the stainless steel funnel, turn on the power switch, access the LCD screen interface, and set the impact time and impact pressure.

5. Open the funnel valve. The high-speed airflow at the bottom of the feed port creates a vacuum.

The crushed stone is sucked into the jet gun assembly, and the jet stream is directed towards the test sample inside the chamber. After impacting the test target, the crushed stone falls into the gravel collection box.

6. After the test is completed, open the test chamber door, remove the sample, and analyze the degree of damage to the sample to determine the quality of its stone impact resistance.

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