Introduction to Sand and Wear Testing Machine

NegotiableUpdate on 05/06

Model

Nature of the Manufacturer: Producers

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Place of Origin

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Overview

The sand and abrasion resistance testing machine is used to test the wear resistance of organic coatings under standard conditions. The wear resistance of the coating on the test plate is expressed by the wear amount per unit film thickness. The testing method of this instrument complies with the American Industrial Standards ASTM D968-83 and JG/T 133-2000.

Product Details

Overview of Sand and Wear Testing Machine:

This instrument is used to test the wear resistance of organic coatings under standard conditions. The wear resistance of the coating on the test plate is expressed by the wear amount per unit film thickness. The testing method of this instrument complies with the American Industrial Standards ASTM D968-83 and JG/T 133-2000.

This method tests the wear resistance of coatings by dropping abrasives through a conduit from a specified height onto a pre coated test panel until the floor material of the test panel is visible. The wear resistance of the coating on the test panel is represented by the amount of wear per unit film thickness.

Parameters of sand and abrasion resistance testing machine:

1. Tube length: 36 inches (914mm)

2. Inner diameter of catheter: 0.75 inches (19mm)

3. Funnel capacity: 3L

4. Dimensions: 230mm x 200mm x 1500mm (length x width x height)

5. Whole machine weight: 25kg

Preparation for Sand and Wear Testing Machine Test:

Prepare the test panel according to the standard requirements and place it for 24 hours under the conditions of (23+-2) degrees Celsius and relative humidity (50+-5) degrees Celsius.

Calibration instrument:

Pour a certain amount of sand into the funnel, check the sand flow falling from the lower end of the conduit, and calibrate the device with the bottom adjustment screw until the inner part of the sand bundle falls exactly at the center of the sand flow when observed from two positions at 90 degrees Celsius. Using a height adjustment nut to adjust the distance between the pipe and the painted surface, according to ASTM standards, the closest point in the vertical direction is 1 inch (25mm). Users need to adjust it according to their own sample thickness. The machine is pre adjusted to 25mm before leaving the factory. Pour a certain volume of sand (preferably 2000+-10ml) and measure the outflow time. The outflow speed should be 2L within 21S-23.5S. This speed comes from ASTM standards, and when using standard sand for testing, we measure a speed of 7L or more in 1 minute.

Attention should be paid when conducting tests on the sand drop and wear resistance testing machine. After the sand drop is completed, the machine should be tilted slightly to pour out the excess sand from the small square at the bottom of the funnel. Then, the sand drop switch should be reinserted to avoid it being unable to be inserted.