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目前显示的是标签为“scratch resistance tester”的博文

Interpretation of The Principle of Five finger Scratching

Scratch resistance test is a lot of materials need to do a test indicator.Currently used on the scratch resistance testing methods are many, but the principle is basically similar. The following focus on the interpretation of the next five fingers scratch method. This test method requires the use of the instrument for the five fingers scratch tester. The scratch tester uses tungsten carbide as a scratch to accurately detect surface wear caused by unconventional defined physical form (eg scraping, grasping, planing, etc.). Take the initiative to detect the car, the outer trim in the smooth, texture of the plastic pieces of wear resistance. Designed based on the automotive industry standard technical requirements, there are usually five contacts. Five fingers scratch tester instrument bracket supports five independent spline rods, so that the needle can be loaded with continuous vertical force. The handle of the bracket controls the height of the cantilever, and the five bra...

What Is The Principle Of Scratch Resistance Testing ?

        Surface scratch resistance is the ability to detect the surface of the product decorative paper against a certain role under the diamond needle. Wipe the surface of the specimen, the measured surface up fixed on the scratch test bench. Adjust the height of the beam, so that the diamond tip contact with the specimen surface, the upper edge of the beam in a horizontal position. The weight moved to 1.5N position to start the stage rotation, so that the diamond needle in the specimen surface to draw two concentric circles, in the radial direction between the scratches and scratches the distance of l-2mm to remove the specimen , Observe the specimen was scratched parts of the situation.                ISO 12137-1: 1997 and ASTM D5178-98 Test principle: The test product is applied in a uniform thickness to a flat surface with uniform surface texture. After drying / curing, the s...