Martindale abrasion testing machine Leather shoe material abrasion resistance test

Wear test is greatly affected by the test conditions, such as the nature of the wear-resistant cloth, the difference in movement of the sample on the wear-resistant cloth, the tension of the sample, the pressure between the sample and the wear-resistant cloth, the sample Any dimensional change affects wear resistance.

Test Method:
The Martindale Abrasion Tester can test a minimum of four samples at a time and a maximum of nine samples at a time. Each test position consists of a protruding round base with a flat ring to hold abrasives etc. The object under test is clamped onto the cylinder and a load (weight) is added to it. If no weight is added, the pressure generated by the weight of the flat plate on the friction object about 0.1342Kg/cm2 or 13.16Kpa. Different test methods, Luminaires with different weights (weights) can be used for the tested object. The test sampleseat is driven by the flat plate to produce a Lissajous figure direction of motion, but the axis of each test sample seat is on the flat plate. For the free rotation method, clamp a graphic sample of the measured object on the fixture and place a specified weight on it. After the clamp clamps the measured object, it will contact with the standard friction material (cloth, sandpaper, etc. determined according to different test standards ) below, resulting in 1. Lissajous Graphics. And produce a multi-directional friction. Each time a Lissaru figure is completed, the counter jumps 16 times and the time is approximately 20 ± 1 second. Martindale Abrasion Tester Test Operation Steps:

Operating Method
1. Sample preparation
In a standard environment, in a flat, non-stretching state, according to different standards Ask for a period. For example 24 hours (GB/T 4 80 2 .2-19 97), 16 hours (EN ISO 12947-4:1998)
2.Selection of samples
Cut from different parts of the whole door fabric Take a sample, the sample must be representative. If it is a beautiful fabric, the sample should include all the different textures and colors presented by the fabric surface;
3. Remove the load and load shaft from the testing machine;
4. Remove the top plate and test fixture;
5. Example device:
Loosen the retaining ring on the test fixture, remove the hold-down piece from the sample and place the sample in the test fixture base. When the tested fabric is not more than 500 g/m2, a piece of polyester foam is placed between the sample and the metal block of the sample clamp; when it is more than 500 g/m2, or a composite fabric, no foam is required. The samples on each sample holder must be subjected to the same voltage.
6. Installation of wool felt and abrasive cloth:
Place the felt and abrasiveel on the grinding table, put the weight on the abrasive, then put the pressure ring on it and tighten the nut so that the pressure ring abrasives are fixed on the grinding table.
7. Place the grinding head on the abrasive and apply pressure;
8. Place the test fixture with the sample facing down on the base fixture and adjust the circular groove of the test fixture to align with the load axis so that the load axle is inserted into the circular groove of the test fixture;
9. Start the start according to the default set times Shut down, start the test and stop automatically after reaching the set number of times:
10. Pick up the sample and compare it to the standard photo in the review box.

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