Benchtop gravel impact tester
Whats/App: +86 156 1874 6768
Web: standard-groups.com
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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