In the scratch resistance test of automotive plastic interior parts, the following scratch test instruments are commonly used:
1. Rockwell Hardness Tester: The Rockwell Hardness Tester can be used to measure the hardness of a material. The scratch resistance of the material is evaluated by applying a quantitative pressure on the sample surface and then reading the depth of the indentation.
2. Taber Scratch Tester: The Taber Scratch Tester is a commonly used instrument for evaluating the scratch resistance of materials. It produces scratches on the surface of the sample by rotating a scratching tool on a disk, applying a certain load and movement trajectory, and then evaluates the performance of the material by measuring the width or depth of the scratches.
3. Wire Brush: Wire brush is a simple and commonly used scratching tool. By brushing with a certain force on the sample surface and observing the damage after brushing, the scratch resistance of the material can be initially assessed.
4. steel nails: steel nails are also a commonly used scratch tool, commonly used in the plastic material scratch test. By applying a certain force of steel nails on the surface of the sample, the depth and width of the scratches are observed to assess the scratch resistance of the material.
These instruments and tools can be selected and used according to the test needs and standard requirements. When performing the scratch test, ensure that the instruments are accurately calibrated and operated in a standardized manner to obtain reliable test results.