Falling Sand Abrasion Test machine
The sand abrasion tester is a specialized testing device used to evaluate the abrasion resistance of material surfaces. It simulates the impact and friction of sand particles on the material surface, realistically reproducing the wear process of materials in natural environments or industrial applications.
Application
It is mainly used to test the abrasion - resistance of the lenses of helmet goggles and evaluate their ability to resist particle - induced damage.
Standard
JG/T 133-2000:Fluorocarbon coatings on architectural aluminum extrusions and panels
ASTM D968-83:Standard Test Method for Abrasion Resistance of Organic Coatings by Falling Sand
ASTMD333:Standard Guide for Clear and Pigmented Lacquers
ASTMD1395:Method of Test for Abrasion Resistance of Clear Floor Coatings
ASTMD2205:Standard Guide for Selection of Tests for Traffic Paints
Feature
Gravity Falling Sand Impact Wear Method: Simulates the wear process of materials in natural environments or industrial applications through the action of gravity.
Standard Abrasives: Uses quartz sand or silicon carbide particles of specific sizes to ensure the accuracy and comparability of test results.
Controllable Parameters: Precisely controls abrasive flow rate, impact height, sample condition, and test time to ensure stable wear conditions.
Wide Applications: Widely used in industries such as coatings and surface treatment, automotive, construction and building materials, and plastics and rubber.
Equipment Maintenance: Regularly clean conduits, funnels, and valves to prevent blockages; promptly replace worn conduits and seals; and lubricate moving parts.
Parameters
| Description | Details |
|---|---|
| Overall Dimension | 230mm×200mm×1500mm (L×W×H) |
| Catheter Length | 36 inches (914mm) |
| Catheter I.D. | 0.75 inches (19mm) |
| Hopper Volume | 3L |
| Machine Weight | 25KG |
Accessoriess
Funnel, sand-falling switch, bracket, conduit, test plate fixture, etc.
Test Procedures
1. according to the standard requirements for the preparation of test plates and placed in (23 +-2) degrees Celsius, relative humidity (50 +-5) degrees Celsius conditions for 24 hours.
2. Calibrate the apparatus:
Pour a certain amount of sand into the funnel, check the sand stream falling from the lower end of the conduit, and calibrate the device with the bottom adjusting screw until the inner part of the sand beam falls exactly on the center of the sand stream when viewed from two positions of 90 degrees Celsius each other. Use the high and low adjusting nut to adjust the distance from the tube tube to the painted surface according to the ASTM standard, when measured in the vertical direction, the near point of 1 inch (25mm), the user needs to be adjusted according to the thickness of their own samples, factory machine pre-adjustment of 25mm. to the pouring of a certain volume amount of sand (to 2000 +-10ml is appropriate), and measure the outflow time, the outflow rate should be 21S- 23.5S within 2L. This speed comes from the ASTM standard, and with the international standard sand for the test, we measured the speed of 1 minute 7L or more.
3. do the test should pay attention to, after the end of the sand fall, the machine should be slightly tilted to make the lower funnel in the small square of excess sand poured out, in the re-insertion of the sand fall switch in order to avoid the sand fall switch can not be put in.
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