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    IEC60335-1-21.2 Scratch Resistance Tester

    Description:Scratch resistant coating test uses a hardened steel needle to scratch, the ends should be tapered needle, an apex angle of 40 °, the tip should be rounded polished, rounded with a radius of 0.25mm ±0.02mm.
    Application Technical Parameter Reference Standards
         
        Scratch resistant coating test uses a hardened steel needle to scratch, the ends should be tapered needle, an apex angle of 40 °, the tip should be rounded polished, rounded with a radius of 0.25mm ±0.02mm.

        Scratches through five pairs of conductive parts, including where the interval, the middle interval should be subject to the greatest potential gradient at the site of the test. When the scratch test, maintaining 80-85 ° with the horizontal plane in the needle, the speed of 20mm / s ± 5mm / s were scratches.

       Of the needle should be combined with the appropriate load, so that the needle along its axial direction to exert a force of 10N ± 0.5N, scratches each interval is at least 5mm, and the edges of the sample are separated by at least 5mm.


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