Wear resistance test of car seat belts

Wear resistance test of car seat belts

1. Preparing the sample

In a standard environment, place it in a flat and unstretched state for a period of time according to different standards, such as 24 h (GB /T 4 80 2 .2 - 19 97), 16 h (EN ISO 12947-4:1998);

2. Selecton of samples

Cut out a sample of different parts of the entire door fabric. The sample must be representative. If it is a novelty fabric, the sample should include all the different textures and colors of the fabric;

3. Remove the load and load shaft from the testing machine;

4. Remove the top plate and test fixture;

5. Device example:

Loosen the fixing ring on the testing device, remove the sample pressure piece, and place the sample into the base of the testing device. When the tested fabric does not exceed 500 g/m2, tighten the metal cap between the sample and the sample. A piece of polyester foam is placed between them; when the grammage is more than 500 g/m2, or s\'this is a composite fabric, there is no need to place plastic foam, and the samples on each sample clamp must be subjected to the same tension;

6. Wool felt and friction cloth device:

Put the felt and abrasive on the grinding table, place the weight on the abrasive, then put on the pressure ring, tighten the nut to make the pressure ring fix the abrasive on the grinding table;

7. Place the grinding head on the abrasive and apply pressure;

8. Place the test rack with the sample down on the base rack. Adjust the circular groove of the test fixture to align with the load shaft so that the The load shaft is inserted into the circular groove of the test device. inside;

9. Set the number of fois according to the standard, turn on the switch, start the test and reach Stop automatically after the set number of times;

10 . Remove the sample and compare it with the standard sample in the evaluation area.

3. Maintenance:

1. The instrument must be regularly inspectedside outside. Cleaning and cleaning to ensure cleanliness of the test instrument;

2. Check the test equipment regularly for abnormalities;

3. During use, each user must follow the correct use method and must not use it in violation of regulations. to avoid damage to the instrument and shorten its service life;

4. After using the test instrument, each user should place the instrument correctly and clean the instrument accordingly to ensure the safety of the instrument. Do cleaning;

5. When the instrument is not in use, the power to the instrument should be turned off and the instrument should be kept clean.

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