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The Scratch Tester Working Principle From Qinsun LAB

The scratch test machine is used to evaluate the shear, scratch, planing, scraping and engraving performance of the material. Its applications include rigid organic materials, plastics and glass, and so on. The test parameters, such as the speed of scratches, the length of scratches, the distance between scratches and the number of lines, are the test equipment with strong applicability and convenience.

scratch tester Working principle:
Coating has three aspects: the action of protection, decoration, and hide the defects of products, and the three main hardness has a lot to do with paint, paint film hardness is said film one of the important properties of mechanical strength, is an important indicator of measuring coating product quality, and measure the coating hardness is an important index of the scratch resistance of determination;

Coating good product in the process of packaging, transport and use will draw by hard brush, not row brush the paint film is often leave scratch resistant, even cut, so both affect adornment effect and make film loss of protection. Therefore, people need a test method and evaluation criteria that can be recognized by both suppliers and suppliers to determine the grade and defect type of scratches.

Scratch resistant test principle of the testing machine is coated with a single coating or composite coating of metal test plate fixed on the instrument work platform, working platform when testing pull test plate at a rate of 30 to 40 mm/s to move slowly, at the same time, to load a load of hemispherical scriber slowly reverse lines in the coating surface, if the scriber cut coating, the scriber and displays a conductive between plates. The test results were evaluated by the maximum weight bearing of the coating or the unbroken coating of the needle under a certain load.
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  1. Testing Instruments2021年7月3日 00:08

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  2. Nethaji subhas chandra bose2021年12月5日 21:58

    I have just gone through your blog......your information is so valuable. Thanks for sharing this information. ABS Instruments Pvt. Ltd. is a Thirty Years old company that supplies the best in materials testing equipment from all over the world to our customers in India.  Digital Shore Hardness Tester

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